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Intel Core Ultra 7 155H vs AMD Ryzen 7 8840U
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CPU comparison with benchmarks
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| Intel Core Ultra 7 155H | AMD Ryzen 7 8840U | |
CPU comparisonIntel Core Ultra 7 155H or AMD Ryzen 7 8840U - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Intel Core Ultra 7 155H has 16 cores with 22 threads and clocks with a maximum frequency of 4.80 GHz. Up to 96 GB of memory is supported in 2 memory channels. The Intel Core Ultra 7 155H was released in Q4/2023. The AMD Ryzen 7 8840U has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The AMD Ryzen 7 8840U was released in Q1/2024. |
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| Intel Core Ultra 7 (18) | Family | AMD Ryzen 7 (71) |
| Intel Core Ultra 100H (5) | CPU group | AMD Ryzen 8040 (20) |
| 1 | Generation | 7 |
| Meteor Lake H | Architecture | Hawk Point (Zen 4) |
| Notebook | Segment | Notebook |
| -- | Predecessor | AMD Ryzen 7 7840U |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core Ultra 7 155H is a 16 core processor with a clock frequency of 1.40 GHz (4.80 GHz). The AMD Ryzen 7 8840U has 8 CPU cores with a clock frequency of 3.30 GHz (5.10 GHz). |
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| Intel Core Ultra 7 155H | Characteristic | AMD Ryzen 7 8840U |
| 16 | Cores | 8 |
| 22 | Threads | 16 |
| hybrid (big.LITTLE) | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 1.40 GHz (4.80 GHz) 6x Redwood Cove |
A-Core | 3.30 GHz (5.10 GHz) 8x Zen 4 |
| 0.90 GHz (3.80 GHz) 8x Crestmont |
B-Core | -- |
| 0.70 GHz (2.50 GHz) 2x Crestmont |
C-Core | -- |
NPU AI performanceThe 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. |
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| Intel Core Ultra 7 155H | Characteristic | AMD Ryzen 7 8840U |
| Intel® AI Boost | AI hardware | AMD Ryzen™ AI |
| Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) | AI specifications | AMD Ryzen™ AI (XDNA) @ 16 TOPS |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs. |
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| Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) | GPU | AMD Radeon 780M |
| 0.60 GHz | GPU frequency | 0.80 GHz |
| 2.25 GHz | GPU (Turbo) | 2.70 GHz |
| -- | GPU Generation | 3 |
| 5 nm | Technology | 4 nm |
| 4 | Max. displays | 4 |
| 128 | Compute units | 12 |
| 1024 | Shader | 768 |
| Yes | Hardware Raytracing | Yes |
| No | Frame Generation | AMD FSR |
| 32 GB | Max. GPU Memory | 32 GB |
| 12.2 | DirectX Version | 12 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) | GPU | AMD Radeon 780M |
| Decode / Encode | Codec h265 / HEVC (8 bit) | Decode / Encode |
| Decode / Encode | Codec h265 / HEVC (10 bit) | Decode / Encode |
| Decode / Encode | Codec h264 | Decode / Encode |
| Decode | Codec VP9 | Decode |
| Decode | Codec VP8 | Decode |
| Decode / Encode | Codec AV1 | Decode / Encode |
| Decode / Encode | Codec AVC | Decode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe Intel Core Ultra 7 155H supports a maximum of 96 GB of memory in 2 memory channels. The AMD Ryzen 7 8840U can connect up to 256 GB of memory in 2 memory channels. |
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| Intel Core Ultra 7 155H | Characteristic | AMD Ryzen 7 8840U |
| LPDDR5X-7500, DDR5-5600 | Memory | DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 |
| 96 GB | Max. Memory | 256 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 120.0 GB/s |
| No | ECC | No |
| 18.00 MB | L2 Cache | 8.00 MB |
| 24.00 MB | L3 Cache | 16.00 MB |
| 5.0 | PCIe version | 4.0 |
| 20 | PCIe lanes | 20 |
| 78.8 GB/s | PCIe Bandwidth | 39.4 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core Ultra 7 155H has a TDP of 28 W, that of the AMD Ryzen 7 8840U is 28 W. |
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| Intel Core Ultra 7 155H | Characteristic | AMD Ryzen 7 8840U |
| 28 W | TDP (PL1 / PBP) | 28 W |
| 115 W | TDP (PL2) | -- |
| 65 W | TDP up | 30 W |
| 20 W | TDP down | 15 W |
| 110 °C | Tjunction max. | 100 °C |
Technical detailsThe Intel Core Ultra 7 155H has a 42.00 MB cache, while the AMD Ryzen 7 8840U cache has a total of 24.00 MB. |
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| Intel Core Ultra 7 155H | Characteristic | AMD Ryzen 7 8840U |
| 7 nm | Technology | 4 nm |
| Chiplet | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX2 | ISA extensions | SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 |
| BGA 2049 | Socket | FP8 |
| VT-x, VT-x EPT, VT-d | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
| Q4/2023 | Release date | Q1/2024 |
| -- | Release price | -- |
| show more data | show more data | |
16C 22T @ 1.40 GHz (4.80 GHz) buy now on Amazon and save!
8C 16T @ 3.30 GHz (5.10 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 4 CPU benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 5.10 GHz |
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Cinebench R23 (Multi-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 3.30 GHz |
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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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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 5.10 GHz |
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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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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 3.30 GHz |
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Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 5.10 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 3.30 GHz |
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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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Intel Core Ultra 7 155H
Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) @ 2.25 GHz |
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AMD Ryzen 7 8840U
AMD Radeon 780M @ 2.70 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 3.30 GHz |
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CPU performance per watt (efficiency)
Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
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Intel Core Ultra 7 155H
16,825 CB R23 MC @ 75 W |
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AMD Ryzen 7 8840U
13,450 CB R23 MC @ 30 W |
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AI performance (NPU)
The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
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Intel Core Ultra 7 155H
16C 22T @ 1.40 GHz |
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AMD Ryzen 7 8840U
8C 16T @ 3.30 GHz |
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Devices using this processor |
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| Intel Core Ultra 7 155H | AMD Ryzen 7 8840U |
| ASUS Zenbook Duo (2024) UX8406 | Unknown |
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