Blog
Notes on diagnosing PC hardware
Practical write-ups on the "why" behind the tools — what's actually happening in your hardware, and how to read the results correctly.
Key Rollover and Ghosting Explained: Why Your Keyboard Drops Presses
If pressing three keys together makes a fourth, unintended key appear, you've just found your keyboard's rollover limit. Here's what's actually happening inside the switch matrix.
DPI vs CPI: What Your Mouse Sensor Spec Actually Means
The number on the box is a ceiling, not a setting. Here's what DPI actually measures, why your real-world number is probably lower, and how to check it yourself.
Why Does My Webcam Look Laggy? Diagnosing Frame Drops and Low-Light Noise
Choppy video in calls usually isn't the camera itself — it's everything downstream of it. Here's how to isolate the real cause.