GitHub|Since 2007
Wptr Lab

DEKernelHostvsRainbow-WebDE

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

Test Date: 2/23/2026

KernelHost
WPTR Score567 ms
Rank#99
TTFB165ms
Time to 1MB149ms
Score567
LCP565ms
FCP365ms
Rainbow-Web

Rainbow-Web

View Details →
WPTR ScoreWinner508 ms
Rank#67
TTFB193ms
Time to 1MB113ms
Score508
LCP593ms
FCP393ms

Our Verdict

KernelHost wins with 165ms TTFB (vs Rainbow-Web's 193ms)

TTFB Breakdown (Connection Phases)

PhaseKernelHostRainbow-WebWinner
DNS Lookup63ms76msKernelHost
TCP Connection46ms41msRainbow-Web
TLS Handshake44ms43msRainbow-Web
Server Processing56ms77msKernelHost
Total TTFB209ms237msKernelHost

Technology & Security Features

KernelHost

Server/CDNnginx
HSTS Enabled
Brotli Compression Enabled
HTTP/3 (QUIC) Disabled
Page Size85.6 KB

Rainbow-Web

Server/CDNnginx
HSTS Enabled
Brotli Compression Disabled
HTTP/3 (QUIC) Disabled
Page Size136.4 KB
2/3
KernelHost Security Features
1/3
Rainbow-Web 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.