13th Gen Core i5-13420H vs 12th Gen Core i7-1255U
Short answer: which is best?
13th Gen Core i5-13420H is 174.2 % stronger than 12th Gen Core i7-1255U. 13th Gen Core i5-13420H ranks #67 of 101 measured processors at WhatFPS (6,702 CPU score over 2 verified runs). 12th Gen Core i7-1255U ranks #101 of 101 measured processors at WhatFPS (2,444 CPU score over 1 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i5-13420H | 12th Gen Core i7-1255U |
|---|---|---|
| CPU score (the processor's own performance) | 6,702 | 2,444 |
| Best rig (GAMING — whole PC) | 4,372 | 799 |
| Integer (MT) | 4 Gop/s | 2.1 Gop/s |
| Single-thread (1T) | 0.62 Gop/s | 0.14 Gop/s |
| Draw calls/s (DX11) | 5,446,842 | 1,498,399 |
| Cores / threads | 8 / 12 | 10 / 12 |
| L3 cache | 12 MB | 12 MB |
What the numbers mean
The CPU score is the processor's own performance — that is what we rank on. GAMING is the whole rig's score in the best PC we measured the processor in, and leans heavily on the graphics card. A strong processor in a weak PC gets a low GAMING score without being worse. We show both and never mix them.
All numbers come from our benchmark suite: four hand-built 3D scenes written directly against the graphics APIs in Rust, the same load on every PC. The methodology is open at https://whatfps.com/metodik
All measurements for 13th Gen Core i5-13420H · All measurements for 12th Gen Core i7-1255U