Ryzen AI 5 340 vs Ryzen 5 8640U
Aggregate performance score
Ryzen 5 8640U outperforms Ryzen AI 5 340 by a minimal 3% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 767 | 790 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Power efficiency | 44.04 | 42.89 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Hawk Point-U (Zen 4) (2023−2025) | Krackan Point (2025) |
| Release date | 6 December 2023 (1 year ago) | 6 January 2025 (less than a year ago) |
Detailed specifications
Ryzen 5 8640U and Ryzen AI 5 340 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 6 (Hexa-Core) | 6 (Hexa-Core) |
| Threads | 12 | 12 |
| Base clock speed | 3.5 GHz | 2 GHz |
| Boost clock speed | 4.9 GHz | 4.8 GHz |
| L1 cache | 64 KB (per core) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 16 MB (shared) | 8 MB |
| Chip lithography | 4 nm | 4 nm |
| Die size | 178 mm2 | 195 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 25,000 million | no data |
| 64 bit support | + | + |
Compatibility
Information on Ryzen 5 8640U and Ryzen AI 5 340 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FP8 | FP8 |
| Power consumption (TDP) | 28 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 8640U and Ryzen AI 5 340. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 | USB 4, XDNA 2 NPU (50 TOPS), Secure Processor, SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 8640U and Ryzen AI 5 340 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 8640U and Ryzen AI 5 340. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 760M ( - 2600 MHz) | AMD Radeon 840M |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 8640U and Ryzen AI 5 340.
| PCIe version | 4.0 | 4.0 |
| PCI Express lanes | 20 | 16 |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
TrueCrypt AES
TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.
Pros & cons summary
| Performance score | 11.50 | 11.21 |
| Integrated graphics card | 12.97 | 9.06 |
| Recency | 6 December 2023 | 6 January 2025 |
Ryzen 5 8640U has a 2.6% higher aggregate performance score, and 43.2% faster integrated GPU.
Ryzen AI 5 340, on the other hand, has an age advantage of 1 year.
Given the minimal performance differences, no clear winner can be declared between AMD Ryzen 5 8640U and AMD Ryzen AI 5 340.
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