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Intel Core Ultra 7 255H
Benchmarks & Specs
Last updated:
Intel Core Ultra 7 255H
Summary
The Intel Core Ultra 7 255H proves to be a forward-looking processor. It has been specifically designed for demanding mobile applications. This chip is based on the modern Arrow Lake H architecture, which creates a solid foundation. Interestingly, it is manufactured using an advanced 3nm process.
This promises not only high energy efficiency but also considerable computing power. Another positive feature is the support for PCIe 5.0. This certainly enables particularly fast data transfers. Such connections are essential for modern components. The integrated graphics, an Intel Arc 140T, can probably handle many visual tasks.
The processor has 6 MB of Level 2 cache. In addition, 24 MB of Level 3 cache is available, which supports smooth multitasking. The maximum memory bandwidth reaches a solid 134 GB/s. We see here a promising candidate for high-end laptops. It offers a robust basis for complex scenarios and demanding users.
This promises not only high energy efficiency but also considerable computing power. Another positive feature is the support for PCIe 5.0. This certainly enables particularly fast data transfers. Such connections are essential for modern components. The integrated graphics, an Intel Arc 140T, can probably handle many visual tasks.
The processor has 6 MB of Level 2 cache. In addition, 24 MB of Level 3 cache is available, which supports smooth multitasking. The maximum memory bandwidth reaches a solid 134 GB/s. We see here a promising candidate for high-end laptops. It offers a robust basis for complex scenarios and demanding users.
- Advanced 3nm manufacturing
- Modern Arrow Lake H architecture
- Support for PCIe 5.0
- Integrated Intel Arc 140T graphics
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
Cinebench 2026 Single-Thread
Single-core performance
Intel Core Ultra 7 255HX
104 %
20C / 20T · 5.20 GHz
12C / 12T · 4.00 GHz
Intel Core Ultra 7 255H
100 %
16C / 16T · 5.10 GHz
Intel Core i9-13980HX
100 %
24C / 32T · 5.60 GHz
24C / 32T · 5.40 GHz
Cinebench 2026 Multi-Core
Multi-core performance
Intel Core i7-12700H
103 %
14C / 20T · 4.70 GHz
10C / 10T · 3.40 GHz
Intel Core Ultra 7 255H
100 %
16C / 16T · 5.10 GHz
Intel Core Ultra 7 155H
100 %
16C / 22T · 4.80 GHz
6C / 12T · 5.00 GHz
Geekbench 6 Single-Core
Single-core performance
AMD Ryzen 9 7945HX
100 %
16C / 32T · 5.40 GHz
Intel Core Ultra 9 288V
100 %
8C / 8T · 5.10 GHz
Intel Core Ultra 7 255H
100 %
16C / 16T · 5.10 GHz
24C / 32T · 5.50 GHz
16C / 16T · 4.80 GHz
Geekbench 6 Multi-Core
Multi-core performance
AMD Ryzen AI Max 385
101 %
8C / 16T · 3.60 GHz
Intel Core i7-14650HX
101 %
16C / 24T · 2.20 GHz
Intel Core Ultra 7 255H
100 %
16C / 16T · 2.00 GHz
12C / 12T · 3.50 GHz
12C / 12T · 3.50 GHz
iGPU - FP32 Performance (Single-precision GFLOPS)
AMD Ryzen AI 9 HX 370
101 %
AMD Radeon 890M
AMD Ryzen AI 9 HX 375
101 %
AMD Radeon 890M
Intel Core Ultra 7 255H
100 %
Intel Arc 140T
Apple M1 Pro (16 Core)
Qualcomm Adreno X2-85
More benchmarks
Specifications
At a glance
| Property | Value |
|---|---|
| Family | Intel Core Ultra 7 (31) |
| CPU group | Intel Core Ultra 200H (5) |
| Architecture | Arrow Lake H |
| Technology | 3 nm |
| Segment | Notebook |
| Socket | BGA 2049 |
| Generation | 2 |
| Predecessor | Intel Core Ultra 7 155H Q4/2023 |
| Successor | Intel Core Ultra X7 358H Q1/2026 |
CPU Cores and Base Frequency
| Property | Value |
|---|---|
| CPU Cores / Threads | 16 / 16 |
| Hyperthreading / SMT | ✗ |
| Core architecture | hybrid (big.LITTLE) |
| Core Cluster 1: | 6x Lion Cove 2.00 - 5.10 GHz |
| Core Cluster 2: | 8x Skymont 1.50 - 4.40 GHz |
| Core Cluster 3: | 2x Crestmont 0.70 - 2.50 GHz |
| L2-Cache | 6.00 MB |
| L3-Cache | 24.00 MB |
| Overclocking | No |
Integrated graphics (iGPU)
| Property | Value |
|---|---|
| GPU name | Intel Arc 140T |
| GPU frequency | 0.60 - 2.25 GHz |
| CUs / Shader | 64 / 1024 |
| Raytracing | ✓ |
| Max. displays | 3 |
| Max. GPU Memory | 32 GB |
| Technology | 5 nm |
| Release date | Q1/2025 |
NPU AI performance
| Property | Value |
|---|---|
| AI hardware | Intel® AI Boost |
| AI specifications | Intel AI Boost (OpenVINO, WindowsML, DirectML, ONNX RT) |
| NPU + CPU + iGPU | 96 TOPS |
Memory & PCIe
| Memory type | Memory bandwidth |
|---|---|
| LPDDR5X-8400 DDR5-6400 | 134.4 GB/s 102.4 GB/s |
| Property | Value |
| Max. Memory | 128 GB |
| Memory channels | 2 |
| ECC | ✗ |
| PCIe | 5.0 x 28 |
| PCIe Bandwidth | 110.3 GB/s |
Thermal Management
| Property | Value |
|---|---|
| TDP | 28 W |
| TDP (PL2) | 115 W |
| TDP up | |
| TDP down | 20 W |
| T. junction max. | 110 °C |
Technical details
| Property | Value |
|---|---|
| Chip design | Chiplet |
| AES-NI | ✓ |
| Operating systems | Windows 11, Linux |
| Instruction set | x86-64 (64 bit) |
| ISA extensions | SSE4.1, SSE4.2, AVX2 |
| Release date | Q1/2025 |
| Release price | |
| Documents | Technical data sheet |
User Reviews
Most popular CPUs in the category Notebook
1
Apple M5 Max (18-CPU 32-GPU)
18C / 18T · 4.61 GHz
2
Apple M5 Max (18-CPU 40-GPU)
18C / 18T · 4.61 GHz
3
Apple M2 Ultra (76-GPU)
24C / 24T · 3.50 GHz
4
Apple M1 Ultra (64-GPU)
20C / 20T · 3.20 GHz
5
Apple M1 Ultra (48-GPU)
20C / 20T · 3.20 GHz
6
Apple M2 Ultra (60-GPU)
24C / 24T · 3.50 GHz
7
Apple M4 (8-CPU)
8C / 8T · 4.46 GHz
8
Apple M1 Pro (8-CPU)
8C / 8T · 3.20 GHz
9
Intel Core Ultra 7 255H
16C / 16T · 5.10 GHz
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