GitHub|Since 2007
Wptr Lab

USCoreSitevsInterServerUS

Head-to-head hosting performance comparison based on real test data

Test Date: 2/23/2026

CoreSite
WPTR ScoreWinner520 ms
Rank#50
TTFB134ms
Time to 1MB124ms
Score520
LCP534ms
FCP334ms
InterServer

InterServer

View Details →
WPTR Score2155 ms
Rank#593
TTFB1624ms
Time to 1MB209ms
Score2155
LCP2024ms
FCP1824ms

Our Verdict

CoreSite wins with 134ms TTFB (vs InterServer's 1624ms)

TTFB Breakdown (Connection Phases)

PhaseCoreSiteInterServerWinner
DNS Lookup129ms6msInterServer
TCP Connection6ms13msCoreSite
TLS Handshake12ms17msCoreSite
Server Processing75ms1617msCoreSite
Total TTFB222ms1653msCoreSite

Technology & Security Features

CoreSite

Server/CDNcloudflare
HSTS Enabled
Brotli Compression Enabled
HTTP/3 (QUIC) Enabled
Page Size201.7 KB

InterServer

Server/CDNcloudflare
HSTS Disabled
Brotli Compression Enabled
HTTP/3 (QUIC) Enabled
Page Size8.9 KB
3/3
CoreSite Security Features
2/3
InterServer Security Features

TTFB Comparison Over Time

Understanding the Metrics

WPTR Score: Wptr Lab Real-Load Score: (Time to 1MB x 2.4) + TTFB. Raw server & network performance (Lower is better).
TTFB: Time to First Byte - How fast the server responds
Time to 1MB: Time to 1MB - Time taken to download 1MB of data (lower is better)
LCP: Largest Contentful Paint - When main content loads
FCP: First Contentful Paint - When first content appears
Score: Overall performance score (0-100)

A Note on Hosting Selection

While TTFB and performance metrics are important indicators, choosing the right hosting provider involves many other factors: security measures, customer support quality, uptime guarantees, scalability options, and pricing structure. Academic research emphasizes that a balanced approach considering all these aspects leads to better long-term outcomes.

Chizhov, A., & Fesenko, A. (2025). Web hosting companies' client solutions: A study of a strategic standpoint. Corporate & Business Strategy Review. doi.org/10.22495/cbsrv6i1art14

Data in this comparison is obtained through independent tests using our TTFB Checker tool.