Intel Mobile CPU v21.1.0-HX
Intel Core Ultra 7 Processor 255HX
patch
0
Core Ultra 7 255HX
Benchmarks
Total score 7,091 / 10,000, rank 23 of 2125.
Every score is out of 10,000, relative to the best CPUs. The total also counts the recommended price ($507, Wikipedia: Arrow Lake (microprocessor) (launch price)); see how scores work.
| Category | Score | Measured | |
|---|---|---|---|
| Single-thread | 8,736 | 4,544 points | |
| Multi-thread | 3,075 | 47,991 points | |
| 3D rendering | 2,303 | monster 182.1, junkshop 124.3, classroom 88.9 samples/min over 90 runs | |
| Gamingestimated | 9,115 |
Sources: PassMark (Intel Core Ultra 7 255HX, 1182 samples), Blender Open Data
Metadata
| Property | Value |
|---|---|
| Brand | Core Ultra |
| Intel name | Intel Core Ultra 7 Processor 255HX |
| Processor number | 255HX |
| Codename | Arrow Lake |
| Generation | Core Ultra Series 2 |
| Microarchitecture | Lunar Lake / Arrow Lake (Lion Cove + Skymont) |
| Performance class | Core Ultra 7 |
| Segment | Mobile |
| Released | 2025-Q12025 |
| Cores | 20 (8P + 12E)20 |
| Threads | 20 |
| Max clock | 5.20 GHz |
| Cache | 30 MB |
| TDP | 55 W |
| Max turbo power | 160 W |
| Socket | FCBGA2114BGA2114 |
| Memory | DDR5-6400DDR5 |
| Recommended price | $507 |
| Instruction sets | |
| Features | |
| Source | Curated (recent-cpus.json) |
Uses (dependencies)
- lithography: TSMC Lithography
v3.0.0(TSMC N3B) - lithography: TSMC Lithography
v2.0.0(TSMC N5) - lithography: TSMC Lithography
v1.1.0(TSMC N6) - simd: Intel SIMD
v0.0.1(MMX) - simd: Intel SIMD
v1.4.1(SSE4.2) - simd: Intel SIMD
v2.1.0(AVX2)
Used by (0)
Nothing depends on this version.
Other variants of this version
- Intel Mobile CPU
v21.1.0-H(Core Ultra 7 255H)
Known vulnerabilities and defects
- Spectre variant 1 (bounds check bypass) (CVE-2017-5753): Mistrained conditional branches speculatively read out-of-bounds data. Mitigated in software only; every speculative out-of-order core is affected.
Matched by codename; individual steppings may differ.
Changelog
Since the previous minor (lower performance class): Intel Mobile CPU v21.0.0-H (Core Ultra 5 225H)
Breaking changes
- ~Socket changed from FCBGA2049 to FCBGA2114
Performance
- ~Total score 6054 → 7091 (+17%)
- ~Single-thread 8063 → 8736 (+8%)
- ~Multi-thread 1708 → 3075 (+80%)
- ~3D rendering 1169 → 2303 (+97%)
- ~Gaming 8626 → 9115 (+6%)
Features
- −Hyper-Threading
Specifications
- ~Cores: 14 (4P + 8E + 2LP-E) → 20 (8P + 12E)
- ~Threads: 14 → 20
- ~Max clock: 4.90 GHz → 5.20 GHz
- ~Cache: 18 MB → 30 MB
- ~TDP: 28 W → 55 W
- ~Max turbo power: 115 W → 160 W
- ~Recommended price: $385 → $507
- −Graphics: Intel Arc 130T (7 Xe-cores)
- −NPU: NPU 3 (13 TOPS)
Since the previous major (previous generation): Intel Mobile CPU v20.1.0-H (Core Ultra 7 155H)
Breaking changes
- ~Socket changed from FCBGA2049 to FCBGA2114
Performance
- ~Total score 4893 → 7091 (+45%)
- ~Single-thread 6226 → 8736 (+40%)
- ~Multi-thread 1477 → 3075 (+108%)
- ~3D rendering 902 → 2303 (+155%)
- ~Gaming 7211 → 9115 (+26%)
Features
- −Hyper-Threading
Specifications
- ~Codename: Meteor Lake → Arrow Lake
- ~Microarchitecture: Meteor Lake (Redwood Cove + Crestmont) → Lunar Lake / Arrow Lake (Lion Cove + Skymont)
- ~Cores: 16 (6P + 8E + 2LP-E) → 20 (8P + 12E)
- ~Threads: 22 → 20
- ~Max clock: 4.80 GHz → 5.20 GHz
- ~Cache: 24 MB → 30 MB
- ~TDP: 28 W → 55 W
- ~Max turbo power: 115 W → 160 W
- ~Recommended price: $503 → $507
- −Graphics: Intel Arc (8 Xe-cores)
- −NPU: NPU 3 (11 TOPS)