AMD Ryzen 9 7940H vs AMD Ryzen 5 3450U
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CPU comparison with benchmarks
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| AMD Ryzen 9 7940H | AMD Ryzen 5 3450U | |
CPU comparisonAMD Ryzen 9 7940H or AMD Ryzen 5 3450U - 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 AMD Ryzen 9 7940H has 8 cores with 16 threads and clocks with a maximum frequency of 5.20 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 7940H was released in Q1/2023. The AMD Ryzen 5 3450U has 4 cores with 8 threads and clocks with a maximum frequency of 3.50 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The AMD Ryzen 5 3450U was released in Q2/2020. |
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| AMD Ryzen 9 (35) | Family | AMD Ryzen 5 (84) |
| AMD Ryzen 7040 (21) | CPU group | AMD Ryzen 3000U (10) |
| 6 | Generation | 2 |
| Phoenix (Zen 4) | Architecture | Picasso (Zen+) |
| Mobile | Segment | Mobile |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 7940H is a 8 core processor with a clock frequency of 4.00 GHz (5.20 GHz). The AMD Ryzen 5 3450U has 4 CPU cores with a clock frequency of 2.10 GHz (3.50 GHz). |
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| AMD Ryzen 9 7940H | Characteristic | AMD Ryzen 5 3450U |
| 8 | Cores | 4 |
| 16 | Threads | 8 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 4.00 GHz | Frequency | 2.10 GHz |
| 5.20 GHz | Turbo Frequency (1 Core) | 3.50 GHz |
| -- | Turbo Frequency (All Cores) | 3.10 GHz |
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 9 7940H | Characteristic | AMD Ryzen 5 3450U |
| AMD Ryzen AI | AI hardware | -- |
| AMD dedicated AI XDNA Technology | AI specifications | -- |
Internal GraphicsThe 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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| AMD Radeon 780M | GPU | AMD Radeon RX Vega 8 (Raven Ridge) |
| 0.80 GHz | GPU frequency | 1.20 GHz |
| 2.80 GHz | GPU (Turbo) | -- |
| 3 | GPU Generation | 8 |
| 4 nm | Technology | 14 nm |
| 4 | Max. displays | 3 |
| 12 | Compute units | 8 |
| 768 | Shader | 512 |
| Yes | Hardware Raytracing | No |
| AMD FSR | Frame Generation | No |
| 32 GB | Max. GPU Memory | 2 GB |
| 12 | 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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| AMD Radeon 780M | GPU | AMD Radeon RX Vega 8 (Raven Ridge) |
| 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 / Encode |
| Decode | Codec VP8 | Decode / Encode |
| Decode / Encode | Codec AV1 | No |
| Decode | Codec AVC | Decode / Encode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe AMD Ryzen 9 7940H supports a maximum of 256 GB of memory in 2 memory channels. The AMD Ryzen 5 3450U can connect up to 32 GB of memory in 2 memory channels. |
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| AMD Ryzen 9 7940H | Characteristic | AMD Ryzen 5 3450U |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR4-2400 |
| 256 GB | Max. Memory | 32 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 38.4 GB/s |
| Yes | ECC | Yes |
| 8.00 MB | L2 Cache | 2.00 MB |
| 16.00 MB | L3 Cache | 4.00 MB |
| 4.0 | PCIe version | 3.0 |
| 20 | PCIe lanes | 12 |
| 39.4 GB/s | PCIe Bandwidth | 11.8 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 9 7940H has a TDP of 54 W, that of the AMD Ryzen 5 3450U is 15 W. |
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| AMD Ryzen 9 7940H | Characteristic | AMD Ryzen 5 3450U |
| 54 W | TDP (PL1 / PBP) | 15 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | 35 W |
| 35 W | TDP down | 12 W |
| 100 °C | Tjunction max. | 105 °C |
Technical detailsThe AMD Ryzen 9 7940H has a 24.00 MB cache, while the AMD Ryzen 5 3450U cache has a total of 6.00 MB. |
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| AMD Ryzen 9 7940H | Characteristic | AMD Ryzen 5 3450U |
| 4 nm | Technology | 12 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 | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
| FP8 | Socket | FP5 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
| Q1/2023 | Release date | Q2/2020 |
| -- | Release price | -- |
| show more data | show more data | |
8C 16T @ 4.00 GHz (5.20 GHz) buy now on Amazon and save!
4C 8T @ 2.10 GHz (3.50 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks
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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AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.50 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 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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AMD Ryzen 9 7940H
AMD Radeon 780M @ 2.80 GHz |
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AMD Ryzen 5 3450U
AMD Radeon RX Vega 8 (Raven Ridge) @ 1.20 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 GHz |
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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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AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.50 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 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 9 7940H
8C 16T @ 5.20 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.50 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 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 GHz |
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Cinebench R20 (Single-Core)
Cinebench R20 is the successor of Cinebench R15 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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AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.50 GHz |
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Cinebench R20 (Multi-Core)
Cinebench R20 is the successor of Cinebench R15 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 GHz |
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Blender 2.81 (bmw27)
Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 GHz |
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CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 2.10 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 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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AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.50 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 3.10 GHz |
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Performance for Artificial Intelligence (AI) and Machine Learning (ML)
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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD Ryzen 5 3450U
4C 8T @ 2.10 GHz |
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Devices using this processor |
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| AMD Ryzen 9 7940H | AMD Ryzen 5 3450U |
| Unknown | Unknown |
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