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Intel Atom C3955 vs Intel Core Ultra 7 255H
Last updated:
Benchmarks
Performance Overview
Average performance across multiple benchmarks
Single-core performance
Multi-core performance
More benchmarks
Specifications
At a glance
|
Wischen
|
Intel Atom C3955 | Intel Core Ultra 7 255H |
|---|---|---|
| Family | Intel Atom (108) | Intel Core Ultra 7 (31) |
| CPU group | Intel Atom C3000 (20) | Intel Core Ultra 200H (5) |
| Architecture | Denverton | Arrow Lake H |
| Technology | 14 nm | 3 nm |
| Segment | Desktop | Notebook |
| Socket | BGA 1310 | BGA 2049 |
| Predecessor | Intel Core Ultra 7 155H | |
| Successor | Intel Core Ultra X7 358H |
CPU Cores and Base Frequency
|
Wischen
|
Intel Atom C3955 | Intel Core Ultra 7 255H |
|---|---|---|
| CPU Cores / Threads | 16 / 16 | 16 / 16 |
| Hyperthreading / SMT | ✗ | ✗ |
| Core architecture | normal | hybrid (big.LITTLE) |
| Core Cluster 1: | 16x 2.10 - 2.40 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 | 16.00 MB | 6.00 MB |
| L3-Cache | 24.00 MB | |
| Overclocking | ✗ | ✗ |
Integrated graphics (iGPU)
|
Wischen
|
Intel Atom C3955 | 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
|
Intel Atom C3955 | 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
|
Intel Atom C3955 | Intel Core Ultra 7 255H |
|---|---|---|
| Memory | DDR4-2400 (38.4 GB/s) | LPDDR5X-8400 (134.4 GB/s) DDR5-6400 (102.4 GB/s) |
| Max. Memory | 256 GB | 128 GB |
| Memory channels | 2 | 2 |
| ECC | Yes | No |
| PCIe | 3.0 x 16 | 5.0 x 28 |
| PCIe Bandwidth | 15.8 GB/s | 110.3 GB/s |
Thermal Management
|
Wischen
|
Intel Atom C3955 | Intel Core Ultra 7 255H |
|---|---|---|
| TDP | 32 W | 28 W |
| TDP (PL2) | 115 W | |
| TDP up | ||
| TDP down | 20 W | |
| T. junction max. | 100 °C | 110 °C |
Technical details
|
Wischen
|
Intel Atom C3955 | Intel Core Ultra 7 255H |
|---|---|---|
| Chip design | Monolithic | Chiplet |
| AES-NI | ✓ | ✓ |
| Operating systems | Windows 10, Linux | Windows 11, Linux |
| Instruction set | x86-64 (64 bit) | x86-64 (64 bit) |
| ISA extensions | SSE4.1, SSE4.2 | SSE4.1, SSE4.2, AVX2 |
| Release date | Q3/2017 | Q1/2025 |
| Release price | 434 $ | |
| 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 Intel Atom C3955 is 5.0 stars (1 ratings), while Intel Core Ultra 7 255H has received 3.6 stars (235 ratings).
Click on the stars to rate one or both processors.
Most popular CPUs in both categories
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Intel Atom C3955
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Apple M5 Max (18-CPU 32-GPU)
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Apple M3 Ultra (28-CPU 60-GPU)
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Apple M2 Ultra (76-GPU)
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Apple M3 Ultra (32-CPU 80-GPU)
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Apple M1 Ultra (64-GPU)
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8
Apple M1 Ultra (48-GPU)
20C / 20T · 3.20 GHz
9
Intel Core Ultra 7 255H
16C / 16T · 5.10 GHz
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