AMD Ryzen 5 7640S vs AMD Ryzen 7 7840S
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CPU comparison with benchmarks
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| AMD Ryzen 5 7640S | AMD Ryzen 7 7840S | |
CPU comparisonAMD Ryzen 5 7640S or AMD Ryzen 7 7840S - 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 5 7640S has 6 cores with 12 threads and clocks with a maximum frequency of 4.90 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 5 7640S was released in Q2/2023. The AMD Ryzen 7 7840S 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 7840S was released in Q2/2023. |
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| AMD Ryzen 5 (86) | Family | AMD Ryzen 7 (70) |
| AMD Ryzen 7040 (21) | CPU group | AMD Ryzen 7040 (21) |
| 6 | Generation | 6 |
| Phoenix (Zen 4) | Architecture | Phoenix (Zen 4) |
| Mobile | Segment | Mobile |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 5 7640S is a 6 core processor with a clock frequency of 3.50 GHz (4.90 GHz). The AMD Ryzen 7 7840S has 8 CPU cores with a clock frequency of 3.30 GHz (5.10 GHz). |
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| AMD Ryzen 5 7640S | Characteristic | AMD Ryzen 7 7840S |
| 6 | Cores | 8 |
| 12 | Threads | 16 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 3.50 GHz | Frequency | 3.30 GHz |
| 4.90 GHz | Turbo Frequency (1 Core) | 5.10 GHz |
| -- | Turbo Frequency (All Cores) | -- |
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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| AMD Radeon 760M | GPU | AMD Radeon 780M |
| 0.80 GHz | GPU frequency | 0.80 GHz |
| 2.60 GHz | GPU (Turbo) | 2.70 GHz |
| 10 | GPU Generation | 3 |
| 4 nm | Technology | 4 nm |
| 4 | Max. displays | 4 |
| 8 | Compute units | 12 |
| 512 | Shader | 768 |
| Yes | Hardware Raytracing | Yes |
| AMD FSR | Frame Generation | AMD FSR |
| 32 GB | Max. GPU Memory | 32 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 760M | 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 | Codec AVC | Decode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe AMD Ryzen 5 7640S supports a maximum of 256 GB of memory in 2 memory channels. The AMD Ryzen 7 7840S can connect up to 256 GB of memory in 2 memory channels. |
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| AMD Ryzen 5 7640S | Characteristic | AMD Ryzen 7 7840S |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 |
| 256 GB | Max. Memory | 256 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 120.0 GB/s |
| Yes | ECC | Yes |
| 6.00 MB | L2 Cache | 8.00 MB |
| 16.00 MB | L3 Cache | 16.00 MB |
| 4.0 | PCIe version | 4.0 |
| 20 | PCIe lanes | 20 |
| 39.4 GB/s | PCIe Bandwidth | 39.4 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 5 7640S has a TDP of 18 W, that of the AMD Ryzen 7 7840S is 15 W. |
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| AMD Ryzen 5 7640S | Characteristic | AMD Ryzen 7 7840S |
| 18 W | TDP (PL1 / PBP) | 15 W |
| -- | TDP (PL2) | -- |
| 28 W | TDP up | 28 W |
| -- | TDP down | -- |
| 100 °C | Tjunction max. | 100 °C |
Technical detailsThe AMD Ryzen 5 7640S has a 22.00 MB cache, while the AMD Ryzen 7 7840S cache has a total of 24.00 MB. |
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| AMD Ryzen 5 7640S | Characteristic | AMD Ryzen 7 7840S |
| 4 nm | Technology | 4 nm |
| Monolithic | Chip design | Monolithic |
| 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,FMA3, AVX2, AVX512 |
| FP8 | Socket | FP8 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
| Q2/2023 | Release date | Q2/2023 |
| -- | Release price | -- |
| show more data | show more data | |
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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 5 7640S
AMD Radeon 760M @ 2.60 GHz |
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AMD Ryzen 7 7840S
AMD Radeon 780M @ 2.70 GHz |
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Devices using this processor |
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| AMD Ryzen 5 7640S | AMD Ryzen 7 7840S |
| Unknown | Unknown |
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