Ryzen 5 8645HS vs Ryzen 5 PRO 7640HS
Aggregate performance score
Primary details
Comparing Ryzen 5 PRO 7640HS and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 500 | 499 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Phoenix (Zen 4, Ryzen 7040) | no data |
| Power efficiency | 25.13 | 30.22 |
| Architecture codename | Phoenix (Zen4) (2023) | Hawk Point-HS (Zen 4) (2023−2024) |
| Release date | 5 January 2023 (1 year ago) | 6 December 2023 (less than a year ago) |
Detailed specifications
Ryzen 5 PRO 7640HS and Ryzen 5 8645HS 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 | 4.3 GHz | 4.3 GHz |
| Boost clock speed | 5 GHz | 5 GHz |
| L1 cache | 384 KB | 64 KB (per core) |
| L2 cache | 6 MB | 1 MB (per core) |
| L3 cache | 16 MB | 16 MB (shared) |
| Chip lithography | 4 nm | 4 nm |
| Die size | 178 mm2 | 178 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | no data | 25,000 million |
| 64 bit support | + | + |
Compatibility
Information on Ryzen 5 PRO 7640HS and Ryzen 5 8645HS 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 | no data | 1 |
| Socket | no data | FP8 |
| Power consumption (TDP) | 54 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 PRO 7640HS and Ryzen 5 8645HS. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 |
| AES-NI | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 PRO 7640HS and Ryzen 5 8645HS are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 PRO 7640HS and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 760M ( - 2600 MHz) | AMD Radeon 760M ( - 2600 MHz) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 PRO 7640HS and Ryzen 5 8645HS.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
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.
x264 encoding pass 2
x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.
x264 encoding pass 1
x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.
WinRAR 4.0
WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.
Geekbench 5.5 Multi-Core
Blender(-)
Geekbench 5.5 Single-Core
7-Zip Single
7-Zip
WebXPRT 3
Pros & cons summary
| Performance score | 14.34 | 14.37 |
| Recency | 5 January 2023 | 6 December 2023 |
| Power consumption (TDP) | 54 Watt | 45 Watt |
Ryzen 5 8645HS has a 0.2% higher aggregate performance score, an age advantage of 11 months, and 20% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Ryzen 5 PRO 7640HS and Ryzen 5 8645HS.
Should you still have questions on choice between Ryzen 5 PRO 7640HS and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.
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