Needing PCIe 4.0/5.0 for more FPS
Also searched as: pcie gen fps · pcie 4.0 gaming · pcie 3.0 vs 4.0 fps · pci express version fps · need pcie 4
What it does
Believing your graphics card needs a newer PCIe slot version (4.0 or 5.0) to hit higher frame rates.
The honest verdict
Graded placebo. A modern graphics card running in a full-width (x16) PCIe 3.0 slot loses almost nothing versus 4.0 — usually low single digits, often inside the margin of error. Games do not shovel enough data across that link for the version to matter at x16. …
Compy won't recommend it. If you're curious anyway: change one thing at a time, measure it on your own rig, and revert unless it's clearly better — that loop is exactly what Compy is built around.
The full graded entry
The rest of this write-up — the specifics behind the grade — ships inside the app. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
The Compy Blackbook holds 191 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
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