Intel Core i7-1255U vs Intel Core i7-8550U
52.8Single-core37.7
32.6Multi-core23.8
75.3Efficiencyspec-based66.4
55.7iGPU25.8
47.7Platformspec-based37.2
12 spec wins — Intel Core i7-1255U1 spec wins — Intel Core i7-8550U
InnoReviews verdict
Intel Core i7-1255U wins this laptop processor face-off, 48.6 to 35.9, pulling ahead mainly in iGPU (+30) and single-core (+15). Intel Core i7-8550U still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Intel Core i7-1255U
- Stronger single-core score: 53 vs 38
- Stronger multi-core score: 33 vs 24
- Stronger iGPU score: 56 vs 26
- 285% higher 3DMark Time Spy Graphics (iGPU): 1,496 vs 389
- 150% higher cores: 10 vs 4
Reasons to pick the Intel Core i7-8550U
No decisive spec advantages — this side competes on price and preference.
General
| Spec | Intel Core i7-1255U | Intel Core i7-8550U |
|---|---|---|
| Announced | 2022 | 2017 |
| Process | 10 nm+29% | 14 nm |
| Base TDP | 15 W | 15 W |
| Max TDP | 55 W+120% | 25 W |
Cores & Clocks
| Spec | Intel Core i7-1255U | Intel Core i7-8550U |
|---|---|---|
| Cores | 10+150% | 4 |
| Performance cores | 2 | — |
| Efficiency cores | 8 | — |
| Threads | 12+50% | 8 |
| Base clock | 1.7 GHz | 1.8 GHz+6% |
| Boost clock | 4.7 GHz+18% | 4 GHz |
| L3 cache | 12 MB+50% | 8 MB |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core i7-8550U |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel UHD Graphics 620 |
| iGPU clock | 1,250 MHz | 1,150 MHz |
Memory
| Spec | Intel Core i7-1255U | Intel Core i7-8550U |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | DDR4-2400 / LPDDR3-2133 |
| Max memory | 64 GB+100% | 32 GB |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core i7-8550U |
|---|---|---|
| Geekbench 6 (single) | 2,130Bottom 25% | — |
| Geekbench 6 (multi) | 6,600Bottom 17% | — |
| Cinebench R23 (single) | 1,600+57%Bottom 41% | 1,021Bottom 10% |
| Cinebench R23 (multi) | 6,800+133%Bottom 20% | 2,914Bottom 6% |
| PassMark | 12,941+123%Bottom 25% | 5,794Bottom 8% |
| 3DMark Time Spy Graphics (iGPU) | 1,496+285%Top 42% | 389Bottom 8% |
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