AMD Ryzen 7 7840S vs Intel Core Ultra 7 155U
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CPU comparison with benchmarks
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| AMD Ryzen 7 7840S | Intel Core Ultra 7 155U | |
CPU comparisonIn this CPU comparison, we compare the AMD Ryzen 7 7840S and the Intel Core Ultra 7 155U and use benchmarks to check which processor is faster.
We compare the AMD Ryzen 7 7840S 8 core processor released in Q2/2023 with the Intel Core Ultra 7 155U which has 12 CPU cores and was introduced in Q4/2023. |
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| AMD Ryzen 7 (68) | Family | Intel Core Ultra 7 (9) |
| AMD Ryzen 7040 (21) | CPU group | Intel Core Ultra 100U (7) |
| 6 | Generation | 1 |
| Phoenix (Zen 4) | Architecture | Meteor Lake U |
| Mobile | Segment | Mobile |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 7 7840S is a 8 core processor with a clock frequency of 3.30 GHz (5.10 GHz). The processor can compute 16 threads at the same time. The Intel Core Ultra 7 155U clocks with 1.70 GHz (4.80 GHz), has 12 CPU cores and can calculate 14 threads in parallel. |
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| AMD Ryzen 7 7840S | Characteristic | Intel Core Ultra 7 155U |
| 8 | Cores | 12 |
| 16 | Threads | 14 |
| normal | Core architecture | hybrid (big.LITTLE) |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 3.30 GHz (5.10 GHz) 8x Zen 4 |
A-Core | 1.70 GHz (4.80 GHz) 2x Redwood Cove |
| -- | B-Core | 1.20 GHz (3.80 GHz) 8x Crestmont |
| -- | C-Core | 0.70 GHz (2.10 GHz) 2x Crestmont |
Artificial Intelligence and Machine LearningProcessors 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. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor. |
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| AMD Ryzen 7 7840S | Characteristic | Intel Core Ultra 7 155U |
| -- | AI hardware | Intel AI engine |
| -- | AI specifications | Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) |
Internal GraphicsGraphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback. |
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| AMD Radeon 780M | GPU | Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) |
| 0.80 GHz | GPU frequency | 0.60 GHz |
| 2.70 GHz | GPU (Turbo) | 1.95 GHz |
| 3 | GPU Generation | -- |
| 4 nm | Technology | 5 nm |
| 4 | Max. displays | 4 |
| 12 | Compute units | 64 |
| 768 | Shader | 512 |
| Yes | Hardware Raytracing | Yes |
| AMD FSR | Frame Generation | No |
| 32 GB | Max. GPU Memory | 32 GB |
| 12 | DirectX Version | 12.2 |
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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| AMD Radeon 780M | GPU | Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) |
| 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 | Codec AVC | Decode / Encode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeUp to 256 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 7 7840S, while the Intel Core Ultra 7 155U supports a maximum of 96 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled. |
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| AMD Ryzen 7 7840S | Characteristic | Intel Core Ultra 7 155U |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | LPDDR5X-7500, DDR5-5600 |
| 256 GB | Max. Memory | 96 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 120.0 GB/s |
| Yes | ECC | No |
| 8.00 MB | L2 Cache | 12.00 MB |
| 16.00 MB | L3 Cache | -- |
| 4.0 | PCIe version | 4.0 |
| 20 | PCIe lanes | 20 |
| 39.4 GB/s | PCIe Bandwidth | 39.4 GB/s |
Thermal ManagementThe AMD Ryzen 7 7840S has a TDP of 15 W. The TDP of the Intel Core Ultra 7 155U is 15 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| AMD Ryzen 7 7840S | Characteristic | Intel Core Ultra 7 155U |
| 15 W | TDP (PL1 / PBP) | 15 W |
| -- | TDP (PL2) | 57 W |
| 28 W | TDP up | 28 W |
| -- | TDP down | 12 W |
| 100 °C | Tjunction max. | 110 °C |
Technical detailsThe AMD Ryzen 7 7840S has 24.00 MB cache and is manufactured in 4 nm. The cache of Intel Core Ultra 7 155U is at 12.00 MB. The processor is manufactured in 7 nm. |
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| AMD Ryzen 7 7840S | Characteristic | Intel Core Ultra 7 155U |
| 4 nm | Technology | 7 nm |
| Monolithic | Chip design | Chiplet |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE4.1, SSE4.2, AVX2 |
| FP8 | Socket | BGA 2049 |
| AMD-V, SVM | Virtualization | VT-x, VT-x EPT, VT-d |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 11, Linux |
| Q2/2023 | Release date | Q4/2023 |
| -- | Release price | -- |
| show more data | show more data | |
8C 16T @ 3.30 GHz (5.10 GHz) buy now on Amazon and save!
12C 14T @ 1.70 GHz (4.80 GHz) buy now on Amazon and save!
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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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AMD Ryzen 7 7840S
AMD Radeon 780M @ 2.70 GHz |
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Intel Core Ultra 7 155U
Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.95 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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AMD Ryzen 7 7840S
8C 16T @ 5.10 GHz |
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Intel Core Ultra 7 155U
12C 14T @ 4.80 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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AMD Ryzen 7 7840S
8C 16T @ 3.30 GHz |
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Intel Core Ultra 7 155U
12C 14T @ 1.70 GHz |
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Devices using this processor |
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| AMD Ryzen 7 7840S | Intel Core Ultra 7 155U |
| Unknown | Unknown |
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