SiteGround Performance: Benchmarks, Latency & Limits 2026
SiteGround runs on Google Cloud, a fast 73ms origin TTFB but a high 833ms global average. Caching is strong; the Cloud line adds autoscaling and a 99.99% SLA.
SiteGround Performance verdict
SiteGround runs on Google Cloud with two lines.
Shared Web Hosting runs from StartUp to GoGeek with no auto-scaling. Cloud Hosting adds 4 to 16 dedicated cores, Smart Autoscaling and a 99.99% SLA.
For WordPress with a nearby audience, SiteGround's Google Cloud origin is fast at 73ms, and GrowBig is the value pick, with staging and 30% faster PHP. Choose a data center near your users to avoid the high global TTFB. For dedicated resources and auto-scaling under spikes, the Cloud line, from Jump Start to Super Power or Custom, is the lever. Budget on the EUR renewal rate, not the intro, and pick GoGeek or Cloud if you need Git deploys.
- Origin and distant TTFB diverge sharply: 73ms at the US origin, but an 833ms global average and a US average that worsened to 632ms in 2025.
- Smart Autoscaling is a Cloud-line feature, so shared plans from StartUp to GoGeek do not auto-scale and grow by manual plan change. Pricing is shown in EUR ex VAT, geo-detected, and shared renewals jump to the regular rate, for example StartUp from EUR 2.99 to EUR 15.99.
- Git and staging are tier-gated: staging from GrowBig, Git from GoGeek and Cloud, and 30% faster PHP from GrowBig up.
- US origin TTFB (independent)
- 73 ms
- US avg TTFB 2025 (independent)
- 632 ms
- WPBench hardware
- 8.4/10 (top 4)
- Cloud SLA
- 99.99% + autoscaling
- CDN edge
- 170+ PoPs (Google Cloud)
This page covers how fast SiteGround runs and how it scales. Region coverage lives on its own page.
Browse the full SiteGround plan catalog
| Plan | Sites | Google storage | Traffic | Dev tools | Intro /mo |
|---|---|---|---|---|---|
| StartUp | 1 | 10 GB | Unlimited | WP-CLI + SSH | €2.99 |
| GrowBigPopular | Unlimited | 50 GB | Unlimited | + Staging | €5.49 |
| GoGeek | Unlimited | 100 GB | Unlimited | + Staging + Git | €8.49 |
12-month intro (ex VAT); renewal is the regular EUR rate. Premium Google Cloud storage, free SSL, free CDN, daily backups (30-day history), multilevel caching, WP-CLI and SSH. GrowBig adds staging, GoGeek adds Git and 30% faster PHP.
Intro prices are first-term promotional rates. Prices in EUR ex VAT (geo-detected EU); shared renews at the regular rate. Full catalog from SiteGround; verify live pricing before buying.
SiteGround measured latency and TTFB profile
| Measurement | Region / load | Result | Source |
|---|---|---|---|
| US origin TTFB | hostingstep, Virginia | 73 ms | hostingstep |
| US average TTFB | hostingstep 2025 | 632 ms | hostingstep |
| Global average TTFB | hostingstep 2025 | 833 ms | hostingstep |
| Static response | Review Signal 2023 | 21 to 23 ms | Review Signal |
| Load-test response | 100 concurrent users, 60s | 170 ms / 0% error | hostingstep |
| CDN edge reach | Google Cloud CDN | 170+ PoPs | SiteGround |
Throughput, autoscaling and resource limits
| Dimension | Value | Notes |
|---|---|---|
| Shared traffic | Unlimited | Unmetered traffic on all shared plans |
| Multilevel caching | All plans | SuperCacher stack; dynamic caching plus Memcached on Cloud |
| Cloud dedicated cores | 4 to 16 (custom 33) | Dedicated CPU; 8 to 20 GB RAM, custom to 130 GB |
| Smart Autoscaling | Cloud only | Infrastructure auto-scales to meet demand on Cloud |
| Load test (100 users) | 170 ms / 0% error | hostingstep; held flat under concurrency |
| WPBench server score | 8.4 / 10 | hostingstep; top 4 of 34 providers |
SiteGround scale ceilings across the product ladder
| Line / aspect | Entry | Ceiling | Scales by |
|---|---|---|---|
| Web (Shared) sites | 1 site | Unlimited | Plan tier (StartUp to GoGeek) |
| Web storage | 10 GB | 100 GB | Plan tier; Premium Google storage |
| Cloud cores | 4 cores | 16 cores (custom 33) | Cloud plan or custom slider |
| Cloud RAM | 8 GB | 20 GB (custom 130) | Cloud plan or custom slider |
| Cloud auto-scale | Smart Autoscaling | Scales to demand | Automatic on Cloud only |
| Shared auto-scale | None | None | Manual plan upgrade only |
SiteGround reliability and architecture
- SiteGround hosts on Google Cloud infrastructure, with plan storage labelled Premium Google storage and data centers that are Google Cloud facilities
- The Cloud line carries a 99.99% uptime SLA with Smart Autoscaling that automatically scales infrastructure to meet demand, NGINX Direct Delivery, dynamic caching and Memcached
- All plans include multilevel caching, free SSL, a free CDN and free daily backups with a 30-day history, with on-demand backups added on GrowBig, GoGeek and Cloud
- Backups are geo-distributed across countries and continents, and data centers use multiple power feeds, on-site generators and enterprise UPS with multi-carrier connectivity
- A smart, constantly updated Web Application Firewall, multi-layered data-center access controls and 24/7 security teams protect the platform, which runs carbon-neutral with renewable energy matching
- GrowBig, GoGeek and Cloud plans run 30% faster PHP, and the Cloud line adds a dedicated IP and white-label access for agencies
SiteGround benchmark results, independently measured
- Review Signal (wphostingbenchmarks.com), Kevin Ohashi's independent benchmark, rated SiteGround Top Tier on the sub-$25, $101-200 and WooCommerce 2023 tiers, with cached static responses of 21 to 23ms and uptime up to 99.9982%
- SiteGround has a Review Signal track record of Top Tier in 2020, 2022 and 2023 and Honorable Mention in 2021, with an overall 65% rating, though some tiers showed Load Storm spikes exceeding 1000ms across regions
- hostingstep recorded a very fast 73ms TTFB at the US origin (Virginia) but a worsening US average, 403ms in 2022 rising to 632ms in 2025 (57% worse than the 2022 best)
- The server-hardware WPBench score was 8.4/10, top 4 of 34 providers, and a 100-user load test held 170ms at a 0% error rate, so hardware and concurrency are strong while distant-origin TTFB lags
- Independent uptime was 99.99% every year from 2020 to 2024 and 99.96% in 2025 (44 outages, 193 minutes of downtime), still strong but slightly down year on year
SiteGround Performance FAQ
How fast is SiteGround in independent tests?
It depends on distance. hostingstep measured a very fast 73ms TTFB at the US origin in Virginia. But the global average was 833ms, and the US average worsened to 632ms in 2025, up from 403ms in 2022. Review Signal's cached static tests ran 21 to 23ms and rated SiteGround Top Tier across most 2023 tiers. A 100-user load test held 170ms at a 0% error rate, and the WPBench hardware score was a top-4 8.4/10.
What product lines does SiteGround offer?
Two. Shared Web Hosting, in StartUp, GrowBig and GoGeek, runs on Premium Google Cloud storage with multilevel caching. Cloud Hosting, in Jump Start, Business, Business Plus and Super Power, plus a configurable Custom Cloud to 33 cores, gives dedicated Google Cloud cores and Smart Autoscaling. The catalog explorer on this page lists both lines with an intro-versus-renewal price toggle, in EUR ex VAT.
Does SiteGround auto-scale under traffic spikes?
Only on the Cloud line, where Smart Autoscaling automatically scales infrastructure to meet demand on Google Cloud. Shared Web Hosting plans, from StartUp to GoGeek, do not auto-scale, so growth there means upgrading the plan or moving to Cloud. The Cloud line also carries a 99.99% SLA against the 99.9% referenced for shared.
Why is SiteGround's origin fast but global TTFB slow?
SiteGround's Google Cloud origin responds quickly close to the data center, 73ms in Virginia. But its global average TTFB is high at 833ms, because a request from a distant region still travels to the chosen origin data center. The free Google Cloud CDN, at 170+ edge locations, helps with static assets, but dynamic origin response is distance-bound, so choosing a nearby data center matters.
What caching and stack does SiteGround use?
SiteGround runs multilevel caching, its SuperCacher stack, on all plans, with NGINX Direct Delivery, dynamic caching and Memcached on the Cloud line. GrowBig, GoGeek and Cloud add 30% faster PHP. It runs on Google Cloud with Premium storage and a smart, constantly updated WAF. The exact web-server detail is not stated on the public pricing pages.
How reliable is SiteGround?
Strong. Independent hostingstep monitoring recorded 99.99% uptime every year from 2020 to 2024, and 99.96% in 2025 with 44 outages and 193 minutes of downtime. Review Signal saw up to 99.9982% on its 2023 tests. The Cloud line carries a 99.99% SLA, and backups are geo-distributed across countries and continents with a 30-day history.
Sources & verification
| Source | What was checked | Last checked |
|---|---|---|
| Siteground Official | Official product page | July 10, 2026 |
| Hostingstep Hosting Reviews Siteground | Independent reference | July 10, 2026 |
| Siteground Cloud Hosting | Cloud Hosting | July 10, 2026 |
| Siteground Datacenters | Datacenters | July 10, 2026 |
| Siteground Web Hosting | Web Hosting | July 10, 2026 |
| Wphostingbenchmarks Company Siteground | Independent reference | July 10, 2026 |
Every fact on this SiteGround page is tied to a named source and a verification date. Freshness-sensitive figures trace to the sources above; verify against the vendor before relying on them.
Explore SiteGround
Every page on SiteGround in one place, you are on performance.