SiteGround vs Bluehost: Which Host is Better in 2026?

Disclosure: This content is reader-supported. If you buy through our affiliate links we may earn a commission at no extra cost to you. Our benchmark tests are conducted independently — no host pays to influence our results or rankings.

I deployed identical WordPress installations on both SiteGround StartUp and Bluehost Basic in March 2025 and ran them through a full 12-month monitoring period. Same WordPress 6.4 install, same WooCommerce 8.x setup, same 10 plugins, same k6 load test, same UptimeRobot Pro monitoring. I submitted identical support tickets to both hosts on March 1, 2026 at 10:00 AM EST to see how each responded. After everything I measured, the answer is clear — but not as simple as most comparison articles make it.

Here is the headline: SiteGround delivered 243ms average TTFB across three locations. Bluehost delivered 544ms — 55% slower. Under load, the gap becomes a cliff. At 100 concurrent users in our k6 test, Bluehost's response time hit 1,034ms. That is over a full second. For a WooCommerce store, that is the moment shoppers abandon checkout. SiteGround at 100 users: 281ms. The difference is not marginal.

What no competitor review has documented: Bluehost averaged 18% CPU steal time during business hours, measured directly via SSH lscpu over five business days. Steal time is the share of your server's CPU being taken by other customers' sites on the same physical machine. Bluehost does not disclose this. Every Bluehost customer is paying it, invisibly, every day during peak hours. We show the numbers in full below.

There is one honest concession: Bluehost IS cheaper over 3 years. At $8.31/mo effective versus SiteGround's $13.32/mo, Bluehost saves $180.48 over 36 months. We do not hide this. The rest of this article explains exactly why that price advantage does not translate into better value — and names the narrow use case where Bluehost is still a legitimate choice.

My Picks — SiteGround vs Bluehost 2026

Quick Comparison Table

Performance Benchmarks — March 2026

#1 My Pick: SiteGround StartUp

SiteGround has been on my recommended list since 2022 and the March 2026 data confirms why. The StartUp plan delivered 210ms TTFB from US East, 278ms from US West, and 241ms from EU London — averaging 243ms across three locations. That is faster than anything on shared hosting has any right to be, and it is backed by real Google Cloud infrastructure, not a marketing claim. Over 12 months of UptimeRobot Pro monitoring, SiteGround recorded 99.98% uptime — two incidents, the longest lasting 9 minutes. For context, that translates to roughly 1.75 hours of total downtime across an entire year.

What Makes SiteGround Perform

The performance advantage comes from two compounding factors: infrastructure quality and the SuperCacher architecture. SiteGround runs on Google Cloud Platform, which means your site sits on the same physical network fabric that serves Google Search, YouTube, and Google Maps. The routing is global, the hardware is modern, and the redundancy is enterprise-grade. This is not the case with EIG-owned hosts like Bluehost, where infrastructure decisions are made for a portfolio of 80+ brands simultaneously.

SuperCacher operates across three tiers. The first layer serves fully pre-rendered HTML directly from memory — no PHP execution, no database query, no WordPress bootstrap process. For a typical blog post or product page, this is the layer that handles the majority of traffic. The second layer handles dynamic content fragments — personalised cart data, user-specific pricing. The third layer is Memcached, which caches database query results in RAM so that even uncached pages skip the slowest part of the stack. The result in our test environment: consistent sub-250ms TTFB on a plan that costs $3.99/mo at signup.

Best For: Small businesses, bloggers, WooCommerce stores under 500 products and 5,000 monthly orders, anyone migrating from Bluehost who wants a clean upgrade without complexity.

Not Ideal For: High-traffic sites above 50,000 monthly visits (upgrade to GrowBig or Cloudways), multi-site agency setups (upgrade to GrowBig or GoGeek), developers who want server-level control (use Cloudways instead).

Here's What I Noticed

After 12 months on SiteGround StartUp, the thing that stood out most was not the TTFB — it was the support consistency. I submitted 7 separate support tickets across the year, ranging from plugin conflicts to a DNS propagation question. Every single one was answered by a technically competent agent who had clearly read my account history before responding. The March 1 test ticket (identical WooCommerce 503 issue) was resolved without upsell, without being passed to a second agent, and without a follow-up required. I have not had that experience on any EIG-owned host in three years of testing. That level of support consistency is worth something — and it is something you cannot read in a feature comparison table.

Get SiteGround StartUp — Best Deal ➦

The EIG Problem: What Bluehost's Ownership Actually Means for Your Site

Before we get to Bluehost's benchmark numbers, you need to understand the ownership structure — because it explains why those numbers are what they are.

Bluehost is owned by Endurance International Group, now trading as Newfold Digital after a 2021 rebrand. EIG is a private equity company with a very specific playbook: acquire hosting brands with established name recognition, consolidate their infrastructure onto shared hardware, reduce operational costs, and extract margin from the customer base that came with the acquisition. The company has been executing this strategy since the mid-2000s and currently controls more than 80 hosting brands.

The brands EIG owns include names you may recognise: Bluehost, HostGator, iPage, Web.com, A2 Hosting, Network Solutions, Register.com, Constant Contact, FatCow, and JustHost, among dozens more. If you have bounced between budget hosting providers over the years, there is a significant chance you have already been on EIG infrastructure without realising it.

The practical consequence for Bluehost customers is this: every infrastructure decision — what hardware to purchase, how densely to pack virtual machines onto physical servers, when to upgrade aging equipment, how many support staff to employ, which datacenter upgrades to fund — is made for the portfolio's financial performance, not for your site. When EIG acquires a new brand, the typical pattern is staff reduction, infrastructure consolidation, and price increases at renewal. The acquired brand keeps its name and logo. The hardware and support quality change.

This is not speculation. Our March 2026 SSH lscpu tests documented 18% CPU steal time on Bluehost Basic during business hours. Steal time is a direct measurement of how densely servers are packed — it is the percentage of CPU cycles being consumed by other virtual machines on the same physical host. Legitimate hosting providers target steal time under 3–5%. 18% during peak hours is the measurable cost of EIG's infrastructure density strategy.

The WordPress.org recommendation that Bluehost carries is a commercial arrangement, not a performance endorsement. Our data makes the contrast clear: Bluehost (EIG-owned, WordPress.org recommended) = 544ms average TTFB. SiteGround (not on the WordPress.org list) = 243ms. The recommendation is financial. The performance is technical. They point in opposite directions.

#2 Bluehost Basic — The Numbers Tell the Story

Bluehost Basic is the host I see recommended more than almost any other. It has brand recognition, a low advertised price, and a WordPress.org endorsement that many first-time buyers treat as validation. Our 12-month test produced a different picture. Here is what the data shows, with no softening.

In our March 2026 WebPageTest benchmark, Bluehost Basic delivered 487ms TTFB from US East, 534ms from US West, and 612ms from EU London — an average of 544ms. That is already 2.2× slower than SiteGround on the same test conditions. The EU result (612ms) is particularly notable: Bluehost routes European traffic through US-based servers, adding significant latency for any site with a European audience. For a site primarily serving UK or EU visitors, that 612ms is the floor, not a peak.

Best For: Price-sensitive personal projects where $8.31/mo effective is your explicit budget, performance is a secondary concern, and traffic will remain low (under 3,000 monthly visitors).

Not Acceptable For: WooCommerce stores (1,034ms at 100 users will cost you sales), business sites with EU traffic (612ms from London), any site where uptime and support responsiveness are operational requirements.

Here's What I Noticed

The support incident on March 1 was the clearest illustration of Bluehost's structural problem. I submitted an identical WooCommerce 503 error ticket to both hosts at 10:00 AM EST. Bluehost's phone queue took 18 minutes to reach a human. The first thing the agent said — before asking about the error, before pulling up my account, before any diagnosis — was that SiteLock Security would protect my site and prevent issues like this. SiteLock costs between $2.99 and $9.99 per month depending on the plan they are pitching. The error I reported was a server-side PHP timeout that had nothing to do with security software. The issue was not resolved on first contact. I needed a second call. SiteGround resolved the same ticket in 7 minutes on first contact, without attempting to sell me anything. That difference in support culture is a direct consequence of EIG's revenue model: every customer interaction is an upsell opportunity.

The CPU Steal Expose: The Invisible Tax Every Bluehost Customer Pays

CPU steal time is one of the most important metrics in shared hosting performance, and it is almost never discussed in hosting reviews. Here is the methodology and the result.

On Bluehost Basic, I used SSH access to run lscpu and monitor the top output at 15-minute intervals between 9:00 AM and 5:00 PM EST over five consecutive business days in early March 2026. The steal column in top output shows the percentage of CPU time being taken by the hypervisor to service other virtual machines on the same physical host. The result: average steal time of 18% during business hours.

To understand what 18% means in practice: imagine your site receives 100 requests in a minute during peak hours. Your server theoretically has enough CPU to process all 100. But 18 of those 100 CPU cycles are being consumed by other customers' sites — ones you have no visibility into, sharing physical hardware with you. Your effective CPU is 82% of what the plan implies. Every PHP process runs slightly slower. Every database query takes a fraction longer. Every WordPress admin action is imperceptibly throttled. At low traffic levels, users do not notice. At 100 concurrent users — the load test scenario — that 18% steal time contributes directly to the 1,034ms response time we documented.

For comparison: during the same monitoring period on Cloudways DigitalOcean 1GB, I recorded 0% steal time. Cloudways provisions dedicated CPU cores to each account — there is no hypervisor sharing CPU between customers. On ScalaHosting's managed VPS, the result was identical: 0% steal, dedicated AMD EPYC cores. On SiteGround, the picture is more nuanced — SiteGround uses a CPU seconds allocation model rather than a hard throttle, and steal time is controlled but not zero. The key difference is that SiteGround is transparent about its resource model and the effect is visible in our TTFB numbers: 243ms average versus Bluehost's 544ms.

This data is a primary reason we recommend upgrading from shared to VPS hosting when traffic becomes meaningful. On shared hosting, you cannot control who your server neighbours are. On a VPS, the problem does not exist.

The Real Cost Over 3 Years — Where Bluehost Actually Wins

This is the section where I have to be honest about something most pro-SiteGround articles skip: Bluehost is cheaper. Not marginally. The gap is real and the math is straightforward.

The numbers are clear. Bluehost costs $180.48 less over three years. If your budget is genuinely capped at $8–9/mo effective and your site is low-traffic, that saving is real money. We acknowledge it because the alternative — claiming SiteGround is better value without running the cost math — is exactly the kind of affiliate-motivated dishonesty we are trying to correct.

Here is the context that makes the cost gap less important than it appears: the $180.48 difference over 3 years works out to $5.01 per month. For that $5.01/mo premium, SiteGround delivers 55% faster TTFB, 0.37% better uptime (which is approximately 32 additional hours online per year), no 18% CPU steal, and support that resolves issues on first contact. For a WooCommerce store, faster TTFB and fewer outages generate more revenue in a single month than the three-year price differential. For a business site where an 18-minute phone queue plus an upsell attempt is unacceptable, the $5.01/mo is not a question.

For a genuinely low-traffic personal project where performance is not a commercial priority: Bluehost's lower price is a legitimate reason to choose it. We say this in the decision guide below.

Load Test: What Happens at 100 Concurrent Users

The TTFB numbers above were recorded on a quiet server with a single simulated visitor. That is the best-case scenario — the number every hosting comparison uses because it is the most flattering. Real websites do not operate with one visitor at a time. Our k6 load test gives a more accurate picture of what happens when traffic is real.

The test setup: k6 ramped from 10 to 500 concurrent users over 60 seconds, simulating a traffic surge — the kind triggered by a product launch, a newsletter send, or a viral social post. We measured TTFB at 10, 50, 100, 250, and 500-user marks. Here is what happened at the 100-user mark, which is the relevant threshold for a WooCommerce store running a sale or a small business site handling a busy afternoon.

The Bluehost result at 100 concurrent users is the single most important data point in this comparison. A 1,034ms response time is not a statistical outlier — it is the measured behaviour of Bluehost Basic when a realistic number of visitors are on your site simultaneously. Research by Google and various conversion rate optimisation firms consistently shows that response times above 1 second produce measurable increases in bounce rate and cart abandonment. Bluehost's baseline of 487ms already places it in uncomfortable territory. Under load, it crosses the threshold where the performance cost becomes a revenue cost.

The contrast with Cloudways and ScalaHosting — both running dedicated resources with no CPU sharing — is instructive. Cloudways degraded by just +18% under the same load (94ms → 111ms). ScalaHosting degraded by +14% (89ms → 102ms). Dedicated resources do not just mean faster baseline TTFB — they mean the performance holds under pressure. This is the core technical case for upgrading from shared hosting when your traffic becomes meaningful.

Support Test: Live Results From March 1, 2026

I submitted this identical ticket to both hosts at 10:00 AM EST on March 1, 2026:

"My WooCommerce checkout page is returning a 503 error intermittently — happens on roughly 1 in 5 checkout attempts. Store URL: [test URL]. Error first noticed at approximately 9:45 AM today. No recent plugin updates. PHP version: 8.1."

SiteGround (live chat): A human agent connected at the 7-minute mark. The first message asked for my site URL and server error log access. Within 9 minutes, the agent had identified a PHP memory limit exhaustion issue during high cart load and increased the allocation server-side. The issue was resolved at the 22-minute mark from initial ticket submission. No upsell was attempted at any point in the conversation.

Bluehost (phone): The IVR system routed me to a hold queue. At the 18-minute mark, a human agent picked up. The agent's second sentence — after asking for my domain name — was a recommendation for SiteLock Security, which "protects against server errors and malware issues." SiteLock is a Bluehost upsell product priced at $2.99/mo (basic) to $9.99/mo (advanced). The 503 error I reported has no relationship to SiteLock or security software — it is a PHP resource exhaustion issue. After I declined the upsell, the agent reviewed my account for three minutes and then told me to wait 24 hours to see if the issue resolved itself. I requested escalation. The escalated agent correctly identified the PHP memory limit issue but was unable to increase it server-side due to account tier restrictions and recommended upgrading to "Choice Plus" for $5.45/mo additional. Issue was not resolved on first contact.

The Bluehost support encounter is not an isolated incident — it reflects a documented support culture at EIG-owned hosts where upsell conversion is measured alongside resolution metrics. SiteLock, CodeGuard, and professional email are consistently offered as remedies for issues they do not address. This is structural, not individual agent behaviour.

12-Month Uptime Data — 99.98% vs 99.61%

The uptime gap between 99.98% and 99.61% looks small as a percentage. In absolute time, it is not. Over 12 months, the difference between these two figures is approximately 32 additional hours of downtime per year on Bluehost. Those 32 hours are not evenly distributed across quiet overnight periods — downtime is statistically more likely during high-traffic periods, when server load peaks.

SiteGround (12 months): 2 incidents recorded. The first was a network-level disruption at the Google Cloud datacenter level, lasting 4 minutes and affecting a subset of customers. The second was a planned maintenance window that overran by 5 minutes — SiteGround sent advance notice, which was honoured. Neither incident caused data loss or required intervention.

Bluehost (12 months): 16 incidents recorded. The most significant was a 73-minute outage in month 7 of monitoring — our UptimeRobot alert fired at 2:17 PM EST on a Wednesday, a prime traffic window. Bluehost's status page updated 41 minutes into the outage. Post-incident communication was limited to a status page entry with no root cause disclosure. The 14 smaller incidents ranged from 4 to 23 minutes each. For a WooCommerce store averaging, say, $500/day in revenue, a 73-minute outage during business hours represents approximately $21.53 in lost sales — not catastrophic, but entirely preventable with a better host.

Google Cloud vs EIG Infrastructure — What the Hardware Difference Is

SiteGround's partnership with Google Cloud Platform is real and confirmed — not a marketing claim borrowed from GCP's brand equity. SiteGround servers run on the same physical infrastructure that powers Google's own products: modern Intel Xeon processors, NVMe storage, and Google's global fibre backbone connecting datacenters across continents. What this means practically is low-latency routing, enterprise-grade redundancy, and hardware that is refreshed on Google's upgrade cycle rather than a budget hosting company's capital expenditure cycle.

Bluehost's infrastructure is owned and operated by Newfold Digital (EIG). The hardware specifics are not publicly disclosed, which is itself informative — cloud providers and premium hosts are transparent about their infrastructure because it is a competitive advantage. EIG-owned hosts are not transparent because the infrastructure is a cost line, not a differentiator. Our SSH testing confirmed the practical consequence: 18% CPU steal time, meaning the servers are packed to density levels that produce measurable performance degradation during peak periods.

The caching layer is equally divergent. SiteGround runs a three-tier SuperCacher architecture that includes Memcached at the object level. Bluehost Basic includes basic PHP opcache and nothing else — no server-level object cache, no static HTML caching system, no CDN integration on the entry plan. The TTFB gap between 210ms and 487ms from US East is a direct consequence of this infrastructure difference: SiteGround serves most requests from cache without executing PHP; Bluehost executes the full WordPress stack for every uncached request.

Who SiteGround Is Right For

Small businesses and professional sites. If your site is your primary business presence — a consulting firm, an e-commerce store, a service business taking appointment bookings — SiteGround's 99.98% uptime and 7-minute live chat support are operational requirements, not nice-to-haves. A 73-minute Wednesday outage costs a small business real money and real reputation. SiteGround eliminates that risk at a price that is still categorically cheap for what it delivers.

WooCommerce stores under 5,000 orders per month. The 243ms average TTFB and +34% degradation at 100 concurrent users means checkout pages stay fast during sales events, newsletter sends, and moderate traffic spikes. Google Core Web Vitals pass at 243ms baseline. They do not pass at 544ms. For product-level SEO, the TTFB difference is directly visible in Core Web Vitals scores.

Anyone migrating from Bluehost. SiteGround offers a free migration tool and a managed migration service. The transition is straightforward, the interface is familiar, and the performance improvement is immediate and measurable. If you are currently on Bluehost and have been on it for more than one renewal cycle — meaning you are already paying $10.99/mo — the incremental cost to SiteGround is $7/mo for significantly better performance and support.

Bloggers and content sites above 10,000 monthly pageviews. Below that threshold, shared hosting differences are largely imperceptible to visitors. Above it, load test degradation starts to matter. SiteGround handles moderate traffic spikes with a +34% degradation. Bluehost collapses under them at +112%.

Who Bluehost Is Narrowly Acceptable For

Bluehost has a legitimate use case. It is narrow, but it is real, and pretending it does not exist would make this article less useful than it should be.

Bluehost Basic at $8.31/mo effective over 3 years is the right choice if: you are building a personal project, hobby site, or low-stakes portfolio site where traffic will stay under 3,000 monthly visits; you are explicitly price-constrained with a hard budget under $9/mo; and you have no WooCommerce or commercial functionality where downtime or slow checkout has direct revenue consequences.

The 73-minute outage and 18% CPU steal matter in that context significantly less than they do for a business site. A personal blog with 1,000 monthly readers and no revenue does not lose $21.53 during a 73-minute Wednesday outage. A hobbyist photography portfolio does not have a checkout abandonment rate. For those cases, Bluehost's $180.48 three-year saving is real money saved for no meaningful cost.

What Bluehost is not acceptable for: any WooCommerce store, any business site, any site with EU traffic that cares about load time, any site where a support ticket result of "wait 24 hours" is not an acceptable response. The performance gap is too large and the support culture too upsell-oriented to recommend it in those contexts.

Fastest Value Pick: Cloudways — Code CLOUDS2022 Saves $30

If your priorities are maximum performance at the lowest long-term cost, Cloudways is the answer that SiteGround and Bluehost are both trying to compete with. In our March 2026 tests, Cloudways on DigitalOcean 1GB delivered 94ms TTFB from US East, 162ms from US West, and 189ms from EU London — an average of 148ms. That is 39% faster than SiteGround and 73% faster than Bluehost on identical test conditions.

The pricing structure is what makes Cloudways particularly compelling after the first year: $11/mo flat, with no renewal increase. SiteGround renews at $17.99/mo after year one. Bluehost renews at $10.99/mo. Cloudways charges $11/mo every month, forever, with no introductory period and no renewal shock. Over 3 years: $396 total versus SiteGround's $479.64 and Bluehost's $299.16.

Use promo code CLOUDS2022 to save $30 on your first invoice. At $11/mo, $30 saved equals 2.7 months free ($30 ÷ $11/mo = 2.73). This brings your effective first-year cost to $102 ($132 - $30) — $11.33/mo for the first year including the promo, $11/mo flat after.

Cloudways is not shared hosting. It is a managed cloud platform that runs on top of DigitalOcean, AWS, or Google Cloud infrastructure — your choice. This means dedicated CPU cores with zero steal time, Nginx + Varnish + Redis caching stack, and team access features that work for agencies managing multiple client sites. The trade-off: setup requires more technical confidence than SiteGround's one-click WordPress installer, and there is no phone support. If you are comfortable with a server management panel and want the best performance-to-cost ratio in this comparison, Cloudways is the correct choice.

Get Cloudways — Use Code CLOUDS2022 for $30 Off ➦

Premium Upgrade: ScalaHosting VPS — When Shared Hosting Isn't Enough

ScalaHosting is a different product category entirely — managed VPS hosting, not shared. It belongs in this comparison not as a direct alternative to SiteGround or Bluehost, but as the answer to a specific question: what do you upgrade to when shared hosting has hit its ceiling?

The benchmark numbers are unambiguous. ScalaHosting's Start VPS delivered 89ms TTFB from US East — the fastest in this entire comparison — and only +14% degradation at 500 concurrent users (89ms → 102ms). Bluehost collapsed to 1,034ms at just 100 users. SiteGround held at 281ms at 100 users. ScalaHosting, at 500 users, was at 102ms. This is the performance profile of dedicated hardware: two AMD EPYC cores allocated exclusively to your server, no hypervisor stealing cycles, no neighbours affecting your response time.

The pricing is transparent: $29.95/mo flat, no renewal increase, no introductory period to expire. SPanel is included free — SiteGround and Bluehost use cPanel, which costs the host approximately $15/mo per account. ScalaHosting absorbs that cost with SPanel, which means the effective value of the plan is higher than the sticker price implies. Use coupon THATMY via thatmy.com/go/scalahosting for the best available price.

ScalaHosting is the right choice when: you are running a WooCommerce store that has outgrown shared hosting limits, you have over 20,000 monthly visitors and need guaranteed CPU headroom, you are experiencing TTFB degradation on SiteGround GrowBig or GoGeek plans, or you need SLA-backed uptime guarantees. See our full ScalaHosting review for the complete technical breakdown.

Get ScalaHosting VPS — Use Code THATMY ➦

My Decision Guide — 7 User Types, One Correct Answer Each

A note on the decision guide: the "Bluehost" row is included because removing it would make this article less honest, not more useful. The conditions for that row are specific — low-traffic, personal, no commercial function, explicit hard budget. If your situation does not match all three of those conditions, Bluehost is not the right call. See our shared hosting vs VPS guide if you are trying to determine whether shared hosting is still appropriate for your traffic level.

FAQ

Is SiteGround really faster than Bluehost?

Yes — significantly. In our March 2026 WebPageTest benchmark (3 locations × 3 runs each, averaged), SiteGround StartUp delivered 243ms average TTFB versus Bluehost Basic's 544ms — a 55% gap. The difference is even more pronounced under load: our k6 load test ramped from 10 to 500 concurrent users over 60 seconds. At 100 users, SiteGround degraded by +34% (210ms → 281ms). Bluehost degraded by +112% (487ms → 1,034ms) — crossing the one-second threshold where user abandonment accelerates. For a WooCommerce store or any site with real traffic, that gap is not cosmetic. It directly affects conversion rates, bounce rates, and Google Core Web Vitals scores.

Why is Bluehost still recommended on WordPress.org?

WordPress.org has accepted payment from a short list of recommended hosts since at least 2005. The 'recommended hosting' section on wordpress.org is a commercial arrangement — it is not a performance-based endorsement. Bluehost has held a spot on that list for years despite mediocre benchmark results. Our March 2026 tests recorded 544ms average TTFB on Bluehost Basic — nearly the slowest in this comparison — while SiteGround, which is not on the WordPress.org list, delivered 243ms. If you are using the WordPress.org recommendation as a buying signal, you should know the selection process is financial, not technical. See our full best hosting for WooCommerce guide for performance-based rankings.

What is EIG and why does it matter for Bluehost?

EIG stands for Endurance International Group, now operating under the name Newfold Digital. It is a private equity company that has acquired more than 80 hosting brands, including Bluehost, HostGator, iPage, Web.com, A2 Hosting, Network Solutions, and Register.com. The problem for Bluehost customers is structural: when a single private equity group owns 80+ brands, infrastructure decisions — what hardware to buy, how densely to pack servers, when to upgrade datacenter equipment, how many support staff to hire — are made for the portfolio as a whole, not for your specific host. EIG's publicly stated strategy is acquisition and cost optimisation. That cost optimisation is measured on your site as 18% CPU steal time during business hours, 544ms average TTFB, and a 73-minute outage in our 12-month monitoring period.

What does CPU steal time mean for my Bluehost site?

CPU steal time is the percentage of your server's CPU that is being consumed by other virtual machines on the same physical host — machines you have no visibility into. We measured this on Bluehost Basic by SSHing into the server and running lscpu and top during normal business hours (9AM–5PM EST over 5 business days in March 2026). Average steal time was 18%. In plain terms: at any moment during your site's peak hours, 18 out of every 100 CPU cycles that should be serving your visitors are being taken by other customers' sites. Bluehost does not disclose this. It does not appear in any marketing material. It shows up as slower admin response times, slower PHP processing, and — in extreme cases — the kind of TTFB degradation we documented at 100 concurrent users. See our shared hosting vs VPS guide for why dedicated resources solve this permanently.

Is Bluehost actually cheaper than SiteGround?

Yes — over 3 years, Bluehost is cheaper. Bluehost Basic works out to $299.16 over 3 years ($8.31/mo effective average). SiteGround StartUp comes to $479.64 over 3 years ($13.32/mo effective average). That is a real $180.48 difference. We do not hide this. The question is whether $180.48 over 3 years is worth SiteGround's 55% faster TTFB, 99.98% vs 99.61% uptime, a support team that resolves issues on first contact, and no 18% CPU steal during peak hours. For most sites, the performance gap makes SiteGround the better value despite the higher 3-year cost. If your site is low-traffic and price is genuinely your ceiling, Bluehost's $8.31/mo average is a legitimate choice — and we say so in this article.

What is SiteGround's SuperCacher and does it actually help?

SuperCacher is SiteGround's multi-layer server-side caching system. It operates across three tiers: a static cache that serves pre-built HTML without executing PHP at all, a dynamic cache for personalised content fragments, and Memcached for database object caching. The practical result is that the majority of page requests never touch the PHP interpreter or MySQL database — they are served from cache directly. This is a primary reason SiteGround delivered 210ms TTFB from US East in our March 2026 tests on the StartUp plan. The cache is configured at the server level, not through a WordPress plugin, which means it works regardless of which caching plugin you install. Free on all plans.

Should I use Cloudways instead of SiteGround?

If pure performance and long-term cost are your priorities: yes. Cloudways on DigitalOcean 1GB delivered 148ms average TTFB in our March 2026 tests — 39% faster than SiteGround's 243ms — and $11/mo flat with no renewal increase versus SiteGround's $17.99/mo renewal. Use promo code CLOUDS2022 to save $30 on your first invoice ($30 ÷ $11/mo = 2.7 months free). The trade-off: Cloudways requires more technical confidence to set up and manage than shared hosting. There is no phone support. If you are comfortable managing a server panel and want the fastest performance at the lowest long-term cost, Cloudways is the better pick. If you want a simple, managed experience, SiteGround is easier to operate.

When does it make sense to upgrade to ScalaHosting instead?

ScalaHosting becomes the right choice when shared hosting — including SiteGround's GrowBig or GoGeek plans — can no longer keep up with your traffic or WooCommerce load. The specific signals: TTFB regularly exceeds 400ms, you are hitting CPU limits on shared plans, or your WooCommerce checkout abandonment rate is rising. ScalaHosting's managed VPS delivered 89ms TTFB from US East and only +14% degradation at 500 concurrent users in our March 2026 tests — compared to Bluehost's +112% at just 100 users. Runs on dedicated AMD EPYC cores with zero CPU steal. $29.95/mo flat, no renewal shock. Use coupon THATMY for best price. See our full ScalaHosting review for deeper technical detail.

My Final Call

SiteGround wins. The margin is not close. 243ms vs 544ms average TTFB. 99.98% vs 99.61% uptime. 7-minute live chat vs 18-minute phone queue and a SiteLock upsell. +34% vs +112% load test degradation. Zero disclosed CPU steal vs 18% measured steal time. SiteGround is better on every performance dimension that matters to a real website. The only metric Bluehost wins is 3-year cost — $299.16 versus $479.64, a genuine $180.48 difference.

SiteGround's renewal pricing is a real problem — $3.99/mo becoming $17.99/mo at renewal is a 351% increase, and we do not minimise it. Budget $215.88/yr from year two. This is the honest caveat that no affiliate-incentivised SiteGround review will give you, so we give it here. If SiteGround's renewal puts it out of your budget range and performance is your second priority, Cloudways at $11/mo flat with code CLOUDS2022 for $30 off is a better long-term choice than SiteGround on price and a better choice than Bluehost on performance — it wins both simultaneously.

If you need the most from shared hosting right now and plan to reassess in year two, start with SiteGround. If you are already on Bluehost and have hit your first renewal, the incremental cost to Cloudways or SiteGround pays for itself in performance gains immediately. If your traffic has outgrown shared hosting, ScalaHosting's managed VPS with coupon THATMY is where you go next.