PC Hardware Guides
In-depth, browser-tested guides on mouse polling rate, keyboard ghosting, monitor response time, eDPI, and everything else that affects your PC performance. No fluff — just data.
What Is Mouse Polling Rate? Complete Guide
Learn what polling rate means, how it affects gaming performance, and what Hz setting is right for your setup.
Best Mouse Polling Rate for Gaming (125Hz vs 1000Hz vs 8000Hz)
Which polling rate actually matters for competitive gaming? We break down 125Hz, 500Hz, 1000Hz, and 8000Hz with benchmarks.
How to Change Mouse Polling Rate (3 Ways)
Step-by-step guide to changing your mouse polling rate in Windows, through your mouse software, and via DIP switches.
N-Key Rollover Explained — What Is NKRO?
N-key rollover and anti-ghosting explained. What they mean, why they matter for gaming, and how to test your keyboard.
Monitor Response Time Explained (ms Guide)
What is monitor response time, how it differs from input lag, and what GtG, MPRT, and overdrive mean for gaming.
How to Check Monitor Refresh Rate — 4 Ways
Check your monitor's actual refresh rate in Windows, macOS, and your browser. Includes our free in-browser test.
Sound Latency Test — Audio Input Lag Guide
What is audio latency, how it affects gaming and music production, and how to measure and reduce it.
What Is eDPI? The Complete Gaming Guide
eDPI (effective DPI) explained — how to calculate it, what pro players use, and how to find your ideal sensitivity.
Dead Pixel vs Stuck Pixel — How to Fix & Test
Dead pixel vs stuck pixel explained. Learn to tell the difference, how to test your screen, and whether you can fix them.
Keyboard Ghosting Test — What Is Ghosting?
Keyboard ghosting explained: what it is, why it happens, how to test for it, and which keyboards prevent it.
Keyboard Latency & Input Delay Guide
What causes keyboard input lag, what latency numbers are good, and five ways to reduce keyboard input delay.
How to Test Your Headphones Online
Check frequency response, stereo balance, driver health, and distortion — free browser headphone test included.
CPU & GPU Bottleneck Explained
What a PC bottleneck is, how to detect which component is causing it, and practical fixes for CPU and GPU bottlenecks.
How to Check If a Port Is Open — 4 Ways
Check open ports using CMD, PowerShell, and online port checkers. Includes common ports reference table.
Scroll Wheel Not Working? Test & Fix
Diagnose scroll wheel skipping, double-scrolling, and wrong direction — with a free browser tester and cleaning guide.
Anti-Ghosting Keyboard Explained
What anti-ghosting really means on a keyboard, how it differs from N-key rollover, and how to test your keyboard.
Keyboard Polling Rate — Does Hz Matter?
Keyboard polling rate explained: what Hz means, how it compares to mouse polling rate, and whether 8000 Hz is worth it.
All guides are written based on real hardware testing. Results verified with our free browser tools.