Intel Core Ultra 7 255HX
- Cores: 20
- L3 cache: 30MB (shared)
- TDP: 45-55 W (max. boost up to 160 W)
- Transistor size: 3 nm
Core Ultra 7 255HX - laptop processor produced by Intel for socket FCBGA-2114 that has 20 cores and 20 threads. The base clock frequency of the CPU is 2400 MHz, but due to Turbo Boost technology, it can perform up to 5200 MHz. The size of the L3 cache is 30 MB. Please note that this chip has integrated graphics Arc Graphics (4-Cores).
Review
Compare Intel Core Ultra 7 255HX with other CPUs
Test in Benchmarks
Performance test of Intel Core Ultra 7 255HX in benchmarksCinebench
Cinebench Scores - 48th place
GeekBench v6
| File compression | 1140 MB/sec |
| Clang compilation | 149.8 Klines/sec |
| HTML 5 Browser | 312.2 pages/sec |
| PDF Renderer | 423.9 Mpixels/sec |
| Text processing | 335.6 pages/sec |
| Background blur | 64.1 images/sec |
| Photo processing | 111.8 images/sec |
| Ray tracing | 31.1 Mpixels/sec |
PassMark
| Integer math | 127 GOps/sec |
| Floating point math | 160.3 GOps/sec |
| Find prime numbers | 400M Primes/sec |
| Random string sorting | 62.4M Strings/sec |
| Data encryption | 39.4 GBytes/sec |
| Data compression | 513.6 MBytes/sec |
| Physics | 2916 Frames/sec |
| Extended instructions | 41.1B Matrices/sec |
Blender
Performance Per Watt
| Cinebench 2024 / Watt | 32 PPW |
| Geekbench 6 Multi / Watt | 328 PPW |
| Passmark CPU Mark / Watt | 874.8 PPW |
| Blender / Watt | 7.11 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| π 2026-06-05 (Levi) | Geekbench 6 CPU | 2907 / 17742 |
| π 2025-12-25 (Junebug) | Cinebench 2024 | 131 / 1759 |
| π 2025-12-17 (balihardik009) | Cinebench 2024 | 131 / 1820 |
| π 2025-11-26 (Verbickisd) | Cinebench 2024 | 125 / 1666 |
| π 2025-11-24 (Abhi) | Geekbench 6 CPU | 2823 / 17264 |
Specifications
Core Ultra 7 255HX technical specificationsGeneral
| Vendor | Intel |
| Released | January 6, 2025 |
| Type | Laptop |
| Instruction Set | x86-64 |
| Codename | Arrow Lake |
| Model number | 255HX |
| Integrated GPU | Arc Graphics (4-Cores) |
| AMD Equivalent | - AMD Ryzen AI Max Pro 380 |
Intel CPU rating - 29th place
CPU
| P-Cores | 8 |
| P-Threads | 8 |
| Base Frequency (P) | 2.4 GHz |
| Turbo Boost Frequency (P) | 5.2 GHz |
| E-Cores | 12 |
| E-Threads | 12 |
| Base Frequency (E) | 1.8 GHz |
| Turbo Boost Frequency (E) | 4.5 GHz |
| Total Cores | 20 |
| Total Threads | 20 |
| Bus Frequency | 100 MHz |
| Multiplier | 24x |
| L1 Cache | 192K (per core) |
| L2 Cache | 2MB (per core) |
| L3 Cache | 30MB (shared) |
| Unlocked Multiplier | Yes |
Package
| Fabrication Process | 3 nm |
| TDP (PL1) | 45-55 W (configurable) |
| Max. Boost TDP (PL2) | 160 W |
| Socket | FCBGA-2114 |
| Peak Temperature | 105Β°C |
Laptop processors ranking - 33rd place
iGPU
| Integrated Graphics | Arc Graphics (4-Cores) |
| GPU Base Clock | 300 MHz |
| GPU Boost Clock | 1850 MHz |
| Shading Units | 512 |
| TMUs | 32 |
| ROPs | 16 |
| Execution Units | 64 |
| TGP | 14 W |
See also: Intel Arc iGPU (4-Cores) β integrated graphics of Intel Core Ultra 7 255HX
Memory Support
| Memory Types | - DDR5-6400 |
| Max. Memory Size | 256 GB |
| Memory Channels | 2 |
| Max. Memory Bandwidth | 102.4 GB/s |
| ECC Support | Yes |
Misc
| Official Site | Intel Core Ultra 7 255HX official page |
| PCI Express Version | 5.0 |
| PCI Express Lanes | 24 |
| Technologies | - Compute: ABM, ADX, AI Boost 3.0, AVX-VNNI, BMI1, BMI2, CLMUL, DLBoost 3.0, F16C, IPU 6.0, SHA
- Performance: CFET, EIST, Speed Shift, TBMT 3.0, TBT 2.0, Thread Director
- Virtualization: VT-d, VT-x, VT-x EPT
- Security: MBEC, RDRAND, TDT, TXT, XD bit, vPro |