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Intel Core Ultra 7 255HX
Benchmarks & Specs
Last updated:
Intel Core Ultra 7 255HX
Summary
The Intel Core Ultra 7 255HX presents itself as a very advanced processor. It is based on the innovative Arrow Lake architecture. The manufacturing in the highly modern 3-nanometer process is particularly noteworthy here. This enables remarkable efficiency with strong performance at the same time.
We were pleasantly surprised by the future-proof equipment that this chip brings. The support of PCIe 5.0 is particularly positive here. This allows state-of-the-art SSDs and other components to be connected quickly and fully utilized. The integrated graphics solution is the Intel Xe 4 Core Graphics 64 EUs.
It also belongs to the Arrow Lake generation. For everyday tasks, it offers good visual support. It is also well suited for media playback or light gaming. The processor also has a generous cache. With 36 MB L2 and 30 MB L3 cache, fast data access is guaranteed. This contributes to the overall responsive operation.
We see the Intel Core Ultra 7 255HX as a really solid choice. It is ideal for modern laptops that require versatile use. You don't have to save on performance.
We were pleasantly surprised by the future-proof equipment that this chip brings. The support of PCIe 5.0 is particularly positive here. This allows state-of-the-art SSDs and other components to be connected quickly and fully utilized. The integrated graphics solution is the Intel Xe 4 Core Graphics 64 EUs.
It also belongs to the Arrow Lake generation. For everyday tasks, it offers good visual support. It is also well suited for media playback or light gaming. The processor also has a generous cache. With 36 MB L2 and 30 MB L3 cache, fast data access is guaranteed. This contributes to the overall responsive operation.
We see the Intel Core Ultra 7 255HX as a really solid choice. It is ideal for modern laptops that require versatile use. You don't have to save on performance.
- Modern Arrow Lake architecture
- Manufactured in 3-nanometer process
- Supports PCIe 5.0
- Integrated Intel Xe 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 9 275HX
102 %
24C / 24T · 5.40 GHz
Intel Core i9-14900HX
102 %
24C / 32T · 5.80 GHz
Intel Core Ultra 7 255HX
100 %
20C / 20T · 5.20 GHz
16C / 16T · 5.10 GHz
8C / 8T · 5.10 GHz
Cinebench 2026 Multi-Core
Multi-core performance
AMD Ryzen 9 7945HX
104 %
16C / 32T · 5.40 GHz
Intel Core i9-14900HX
102 %
24C / 32T · 5.80 GHz
Intel Core Ultra 7 255HX
100 %
20C / 20T · 5.20 GHz
24C / 32T · 5.40 GHz
16C / 16T · 4.06 GHz
Geekbench 6 Single-Core
Single-core performance
Intel Core Ultra X9 388H
101 %
16C / 16T · 5.10 GHz
12C / 12T · 4.20 GHz
Intel Core Ultra 7 255HX
100 %
20C / 20T · 5.20 GHz
Intel Core Ultra X7 358H
100 %
16C / 16T · 4.80 GHz
24C / 32T · 5.80 GHz
Geekbench 6 Multi-Core
Multi-core performance
AMD Ryzen 9 8940HX
100 %
16C / 32T · 2.40 GHz
Intel Core Ultra 7 265HX
100 %
20C / 20T · 2.60 GHz
Intel Core Ultra 7 255HX
100 %
20C / 20T · 2.40 GHz
16C / 16T · 2.10 GHz
24C / 32T · 4.90 GHz
iGPU - FP32 Performance (Single-precision GFLOPS)
Intel Core i5-13600H
101 %
Intel Iris Xe Graphics 80 (Alder Lake)
AMD Ryzen 7 5825C
100 %
AMD Radeon RX Vega 8 (Raven Ridge)
Intel Core Ultra 7 255HX
100 %
Intel Xe 4 Core Graphics 64 EUs (Arrow Lake)
Intel Core Ultra 5 125U
100 %
Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake)
AMD Ryzen 7 2800H
99 %
AMD Radeon RX Vega 11 (Raven Ridge)
AI performance (NPU)
Apple M2 (8-GPU)
122 %
8C / 8T · 0.66 GHz
Apple M2
122 %
8C / 8T · 0.66 GHz
Intel Core Ultra 7 255HX
100 %
20C / 20T · 2.40 GHz
Apple M1 (7-GPU)
85 %
8C / 8T · 0.60 GHz
10C / 10T · 0.60 GHz
More benchmarks
Specifications
At a glance
| Property | Value |
|---|---|
| Family | Intel Core Ultra 7 (31) |
| CPU group | Intel Core Ultra 200HX (8) |
| Architecture | Arrow Lake |
| Technology | 3 nm |
| Segment | Notebook |
| Socket | BGA 2114 |
| Generation | 2 |
| Predecessor | |
| Successor |
CPU Cores and Base Frequency
| Property | Value |
|---|---|
| CPU Cores / Threads | 20 / 20 |
| Hyperthreading / SMT | ✗ |
| Core architecture | hybrid (big.LITTLE) |
| Core Cluster 1: | 8x Lion Cove 2.40 - 5.20 GHz |
| Core Cluster 2: | 12x Skymont 1.80 - 4.50 GHz |
| L2-Cache | 36.00 MB |
| L3-Cache | 30.00 MB |
| Overclocking | Intel Thermal Velocity Boost Intel Turbo Boost Max |
Integrated graphics (iGPU)
| Property | Value |
|---|---|
| GPU name | Intel Xe 4 Core Graphics 64 EUs (Arrow Lake) |
| GPU frequency | 0.30 - 1.85 GHz |
| CUs / Shader | 4 / 512 |
| Raytracing | ✓ |
| Max. displays | 3 |
| Max. GPU Memory | 32 GB |
| Technology | 5 nm |
| Release date | Q3/2024 |
NPU AI performance
| Property | Value |
|---|---|
| AI hardware | Intel® AI Boost |
| AI specifications | Intel AI Boost NPU 4 @ 13 TOPS |
| NPU + CPU + iGPU | 33 TOPS |
Memory & PCIe
| Memory type | Memory bandwidth |
|---|---|
| DDR5-6400 | 102.4 GB/s |
| Property | Value |
| Max. Memory | 192 GB |
| Memory channels | 2 |
| ECC | ✓ |
| PCIe | 5.0 x 20 |
| PCIe Bandwidth | 78.8 GB/s |
Thermal Management
| Property | Value |
|---|---|
| TDP | 55 W |
| TDP (PL2) | 160 W |
| TDP up | |
| TDP down | 45 W |
| T. junction max. | 105 °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
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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 M1 Pro (8-CPU)
8C / 8T · 3.20 GHz
8
Apple M1 Max (24-GPU)
10C / 10T · 3.20 GHz
9
Intel Core Ultra 7 255HX
20C / 20T · 5.20 GHz
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