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Intel Core Ultra 7 255H Benchmark, Test and specs
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The Intel Core Ultra 7 255H was released in Q1/2025 and has 16 cores. The processor can process 16 threads simultaneously and uses a mainboard with the socket BGA 2049.
| Name: | Intel Core Ultra 7 255H |
|---|---|
| Family: | Intel Core Ultra 7 (24) |
| CPU group: | Intel Core Ultra 200H (5) |
| Architecture: | Arrow Lake H |
| Technology: | 3 nm |
| Segment: | Notebook |
| Generation: | 2 |
| Predecessor: | Intel Core Ultra 7 155H |
| Successor: | -- |
CPU Cores and Base Frequency
The Intel Core Ultra 7 255H has 16 cores. The clock frequency of the Intel Core Ultra 7 255H is 2.00 GHz (5.10 GHz). An initial performance assessment can be made using the number of CPU cores.
| CPU Cores / Threads: | 16 / 16 |
|---|---|
| Core architecture: | hybrid (big.LITTLE) |
| A-Core: | 6x Lion Cove |
| B-Core: | 8x Skymont |
| C-Core: | 2x Crestmont |
| Hyperthreading / SMT: | No |
|---|---|
| Overclocking: | No |
| A-Core Frequency: | 2.00 GHz (5.10 GHz) |
| B-Core Frequency: | 1.50 GHz (4.40 GHz) |
| C-Core Frequency: | 0.70 GHz (2.50 GHz) |
NPU AI performance
The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.
| AI hardware: | Intel® AI Boost |
|---|---|
| AI specifications: | Intel AI Boost (OpenVINO, WindowsML, DirectML, ONNX RT) |
| NPU + CPU + iGPU: | 96 TOPS |
Integrated graphics (iGPU)
The Intel Core Ultra 7 255H has an integrated graphics that the system can use to efficiently play back videos. The Intel Core Ultra 7 255H has the Intel Arc 140T installed, which has 64 streaming multiprocessors (1024 shaders).
| GPU name: | Intel Arc 140T |
|---|---|
| GPU frequency: | 0.60 GHz |
| GPU (Turbo): | 2.25 GHz |
| Compute units: | 64 |
| Shader: | 1024 |
| Hardware Raytracing: | Yes |
| Release date: | Q1/2025 |
| Max. displays: | 3 |
|---|---|
| Generation: | -- |
| Direct X: | 12.2 |
| Technology: | 5 nm |
| Max. GPU Memory: | 32 GB |
| Frame Generation: | Intel XeSS |
Hardware codec support
Processors with integrated graphics can process video codecs faster. Support for modern codecs can significantly increase system efficiency during video playback.
| h265 / HEVC (8 bit): | Decode / Encode |
|---|---|
| h265 / HEVC (10 bit): | Decode / Encode |
| h264: | Decode / Encode |
| VP8: | Decode |
| VP9: | Decode |
| AV1: | Decode / Encode |
|---|---|
| AVC: | Decode / Encode |
| VC-1: | Decode |
| JPEG: | Decode / Encode |
Memory & PCIeThe Intel Core Ultra 7 255H supports a maximum of 128 GB memory. Depending on the mainboard, the processor can use a maximum of 2 (Dual Channel) memory channels. This results in a maximum bandwidth of the main memory of 134.4 GB/s. |
|
| Memory type: | Memory bandwidth: |
|---|---|
| LPDDR5X-8400 DDR5-6400 | 134.4 GB/s 102.4 GB/s |
| Max. Memory: | 128 GB |
| Memory channels: | 2 (Dual Channel) |
| ECC: | No |
| PCIe: | 5.0 x 28 |
| PCIe Bandwidth: | 110.3 GB/s |
Thermal ManagementThe Intel Core Ultra 7 255H has a TDP of 28 W. Based on the TDP, the system manufacturer can and must adapt the cooling solution to the processor. |
|
|---|---|
| TDP (PL1 / PBP): | 28 W |
| TDP (PL2): | 115 W |
| TDP up: | -- |
| TDP down: | 20 W |
| Tjunction max.: | 110 °C |
Technical details
Modern production reduces the waste heat of a processor and increases its efficiency. The Intel Core Ultra 7 255H is made in 3 nm and has 30.00 MB cache.
| Technology: | 3 nm |
|---|---|
| Chip design: | Chiplet |
| Socket: | BGA 2049 |
| L2-Cache: | 6.00 MB |
| L3-Cache: | 24.00 MB |
| AES-NI: | Yes |
| Operating systems: | Windows 11, Linux |
| Virtualization: | VT-x, VT-x EPT, VT-d |
|---|---|
| Instruction set (ISA): | x86-64 (64 bit) |
| ISA extensions: | SSE4.1, SSE4.2, AVX2 |
| Release date: | Q1/2025 |
| Release price: | -- |
| Part Number: | -- |
| Documents: | Technical data sheet |
16C 16T @ 2.00 GHz (5.10 GHz)
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Benchmark results
The benchmark results for the Intel Core Ultra 7 255H have been carefully checked by us. We only publish benchmark results that have been created by us or that have been submitted by a visitor and then checked by a team member. All results are based on and fullfill our benchmark guidelines.
Screenshots:
Screenshots:
Geekbench 6 (Single-Core)
Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
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Geekbench 6 (Multi-Core)
The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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