AMD Ryzen 7 PRO 7840U vs AMD A4-3400
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CPU comparison with benchmarks
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| AMD Ryzen 7 PRO 7840U | AMD A4-3400 | |
CPU comparisonAMD Ryzen 7 PRO 7840U or AMD A4-3400 - 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 7 PRO 7840U has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 7 PRO 7840U was released in Q2/2023. The AMD A4-3400 has 2 cores with 2 threads and clocks with a maximum frequency of 2.70 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD A4-3400 was released in Q3/2011. |
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| AMD Ryzen 7 PRO (21) | Family | AMD A (112) |
| AMD Ryzen 7040 (21) | CPU group | AMD A4-3000 (3) |
| 6 | Generation | 1 |
| Phoenix (Zen 4) | Architecture | Llano (K10) |
| Mobile | Segment | Desktop / Server |
| -- | Predecessor | -- |
| AMD Ryzen 7 PRO 8840U | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 7 PRO 7840U has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD Ryzen 7 PRO 7840U is 3.30 GHz (5.10 GHz) while the AMD A4-3400 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the AMD A4-3400 is at 2.70 GHz. |
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| AMD Ryzen 7 PRO 7840U | Characteristic | AMD A4-3400 |
| 8 | Cores | 2 |
| 16 | Threads | 2 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | Yes |
| 3.30 GHz | Frequency | 2.70 GHz |
| 5.10 GHz | Turbo Frequency (1 Core) | -- |
| -- | Turbo Frequency (All Cores) | -- |
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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| AMD Ryzen 7 PRO 7840U | Characteristic | AMD A4-3400 |
| AMD Ryzen™ AI | AI hardware | -- |
| AMD dedicated AI XDNA Technology | AI specifications | -- |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The AMD Ryzen 7 PRO 7840U or AMD A4-3400 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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| AMD Radeon 780M | GPU | AMD Radeon HD 6410D |
| 0.80 GHz | GPU frequency | 0.60 GHz |
| 2.70 GHz | GPU (Turbo) | -- |
| 3 | GPU Generation | 3 |
| 4 nm | Technology | 32 nm |
| 4 | Max. displays | 2 |
| 12 | Compute units | 2 |
| 768 | Shader | 160 |
| Yes | Hardware Raytracing | No |
| AMD FSR | Frame Generation | No |
| 32 GB | Max. GPU Memory | 1 GB |
| 12 | DirectX Version | 11 |
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 HD 6410D |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode / Encode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | Decode |
| Decode | Codec VP9 | No |
| Decode | Codec VP8 | No |
| Decode / Encode | Codec AV1 | No |
| Decode | Codec AVC | Decode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe AMD Ryzen 7 PRO 7840U can use up to 256 GB of memory in 2 memory channels. The maximum memory bandwidth is 120.0 GB/s. The AMD A4-3400 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 25.6 GB/s. |
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| AMD Ryzen 7 PRO 7840U | Characteristic | AMD A4-3400 |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR3-1600 |
| 256 GB | Max. Memory | |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 120.0 GB/s | Max. Bandwidth | 25.6 GB/s |
| Yes | ECC | No |
| 8.00 MB | L2 Cache | 1.00 MB |
| 16.00 MB | L3 Cache | -- |
| 4.0 | PCIe version | -- |
| 20 | PCIe lanes | -- |
| 39.4 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Ryzen 7 PRO 7840U is 28 W, while the AMD A4-3400 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD Ryzen 7 PRO 7840U | Characteristic | AMD A4-3400 |
| 28 W | TDP (PL1 / PBP) | 65 W |
| -- | TDP (PL2) | -- |
| 30 W | TDP up | -- |
| 15 W | TDP down | -- |
| 100 °C | Tjunction max. | -- |
Technical detailsThe AMD Ryzen 7 PRO 7840U is manufactured in 4 nm and has 24.00 MB cache. The AMD A4-3400 is manufactured in 32 nm and has a 1.00 MB cache. |
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| AMD Ryzen 7 PRO 7840U | Characteristic | AMD A4-3400 |
| 4 nm | Technology | 32 nm |
| Monolithic | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE3, SSE4a |
| FP8 | Socket | FM1 |
| AMD-V, SVM | Virtualization | AMD-V |
| Yes | AES-NI | No |
| Windows 10, Windows 11, Linux | Operating systems | Windows 10, Linux |
| Q2/2023 | Release date | Q3/2011 |
| -- | Release price | 28 $ |
| show more data | show more data | |
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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 7 PRO 7840U
8C 16T @ 5.10 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
AMD Radeon 780M @ 2.70 GHz |
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AMD A4-3400
AMD Radeon HD 6410D @ 0.60 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 5.10 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 PRO 7840U
8C 16T @ 5.10 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 5.10 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 5.10 GHz |
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AMD A4-3400
2C 2T @ 2.70 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 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 GHz |
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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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AMD Ryzen 7 PRO 7840U
8C 16T @ 3.30 GHz |
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AMD A4-3400
2C 2T @ 2.70 GHz |
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Devices using this processor |
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| AMD Ryzen 7 PRO 7840U | AMD A4-3400 |
| Unknown | Unknown |
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