Know your rig before you build it.
Free diagnostic tools for PC builders. Check whether your CPU and GPU actually match, and find the monitor that won't waste either of them.
Two checks, before you spend anything
Run these before you buy a part or set a resolution — not after, when the return window's closed.
Bottleneck Checker
Pick any CPU and GPU pairing and see which one is holding the other back, and by how much — scored against real benchmark data, not a guess.
Monitor Advisor
Tell it your screen size and how far you sit from it, and it'll tell you the resolution that actually makes sense — going higher just burns performance you can't see.
How the numbers work
No affiliate ranking or vendor bias — the scoring only cares about the hardware.
Pick your parts
Choose a CPU and GPU (or your GPU and a target resolution) from the dropdowns — no account, no install.
We normalise the benchmarks
Every part is scored against the dataset using z-score normalisation, so a budget CPU and a flagship GPU are compared fairly.
Get a straight answer
A single verdict — which part is the limiter, and roughly how much performance you're leaving on the table.
Built by someone who kept getting this wrong
PCRigCheck started as a way to stop guessing whether a part upgrade was actually worth it. The bottleneck checker exists because most online calculators use flawed benchmark methodology — this one doesn't.
More tools and component write-ups are on the way as the dataset grows.