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AMD EPYC 7451 vs Intel Core Ultra 7 255H
Last updated:
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
More benchmarks
Cinebench 2026 (ST)
218 entries
218 entries
Cinebench 2026 (MC)
219 entries
219 entries
Geekbench 6 (SC)
1,989 entries
1,989 entries
Geekbench 6 (MC)
1,927 entries
1,927 entries
Cinebench R20 (SC)
666 entries
666 entries
Geekbench 5 (SC)
2,512 entries
2,512 entries
Cinebench R20 (MC)
615 entries
615 entries
Geekbench 5 (MC)
2,483 entries
2,483 entries
FP32 SP (iGPU)
2,219 entries
2,219 entries
PassMark CPU-Mark
2,504 entries
2,504 entries
Cinebench R15 (SC)
1,113 entries
1,113 entries
Cinebench R15 (MC)
1,110 entries
1,110 entries
Geekbench 3 (SC)
945 entries
945 entries
Geekbench 3 (MC)
941 entries
941 entries
Cinebench R11.5 (SC)
826 entries
826 entries
Cinebench R11.5 (MC)
837 entries
837 entries
Specifications
At a glance
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| Family | AMD EPYC (147) | Intel Core Ultra 7 (31) |
| CPU group | AMD EPYC 7001 (12) | Intel Core Ultra 200H (5) |
| Architecture | Naples (Zen) | Arrow Lake H |
| Technology | 14 nm | 3 nm |
| Segment | Server | Notebook |
| Socket | SP3 | BGA 2049 |
| Predecessor | Intel Core Ultra 7 155H | |
| Successor | Intel Core Ultra X7 358H |
CPU Cores and Base Frequency
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| CPU Cores / Threads | 24 / 48 | 16 / 16 |
| Hyperthreading / SMT | ✓ | ✗ |
| Core architecture | normal | hybrid (big.LITTLE) |
| Core Cluster 1: | 24x 2.30 - 3.20 GHz |
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 | 64.00 MB | 24.00 MB |
| Overclocking | ✗ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| GPU name | no iGPU | 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
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| AI hardware | Intel® AI Boost | |
| AI specifications | Intel AI Boost (OpenVINO, WindowsML, DirectML, ONNX RT) | |
| NPU + CPU + iGPU | 96 TOPS |
Memory & PCIe
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| Memory | DDR4-2666 (170.6 GB/s) | LPDDR5X-8400 (134.4 GB/s) DDR5-6400 (102.4 GB/s) |
| Max. Memory | 128 GB | |
| Memory channels | 8 | 2 |
| ECC | Yes | No |
| PCIe | 3.0 x 128 | 5.0 x 28 |
| PCIe Bandwidth | 126.1 GB/s | 110.3 GB/s |
Thermal Management
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| TDP | 180 W | 28 W |
| TDP (PL2) | 115 W | |
| TDP up | ||
| TDP down | 20 W | |
| T. junction max. | 110 °C |
Technical details
|
Wischen
|
AMD EPYC 7451 | Intel Core Ultra 7 255H |
|---|---|---|
| Chip design | Chiplet | Chiplet |
| AES-NI | ✓ | ✓ |
| Operating systems | Windows 10, Linux | Windows 11, Linux |
| Instruction set | x86-64 (64 bit) | x86-64 (64 bit) |
| ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | SSE4.1, SSE4.2, AVX2 |
| Release date | Q3/2017 | Q1/2025 |
| Release price | 2400 $ | |
| Documents | Technical data sheet | Technical data sheet |
User Reviews
Your rating
Here you can rate one or both of the processors. The average rating of AMD EPYC 7451 is 0 stars (0 ratings), while Intel Core Ultra 7 255H has received 3.6 stars (251 ratings).
Click on the stars to rate one or both processors.
Most popular CPUs in both categories
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18C / 18T · 4.61 GHz
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Apple M2 Ultra (76-GPU)
24C / 24T · 3.50 GHz
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Apple M1 Ultra (48-GPU)
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Apple M2 Ultra (60-GPU)
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Apple M1 Pro (8-CPU)
8C / 8T · 3.20 GHz
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Intel Core Ultra 7 255H
16C / 16T · 5.10 GHz
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AMD EPYC 7451
24C / 48T · 3.20 GHz
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