Ryzen 5 8645HS vs Athlon II X4 651K
Primary details
Comparing Athlon II X4 651K and Ryzen 5 8645HS processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 499 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Power efficiency | no data | 30.13 |
| Architecture codename | Llano (2011−2012) | Hawk Point-HS (Zen 4) (2023−2024) |
| Release date | 14 November 2011 (12 years ago) | 6 December 2023 (less than a year ago) |
Detailed specifications
Athlon II X4 651K 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 | 4 (Quad-Core) | 6 (Hexa-Core) |
| Threads | 4 | 12 |
| Base clock speed | 3 GHz | 4.3 GHz |
| Boost clock speed | 3 GHz | 5 GHz |
| L1 cache | 128 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 32 nm | 4 nm |
| Die size | 228 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 1,178 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Athlon II X4 651K 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 | 1 | 1 |
| Socket | FM1 | FP8 |
| Power consumption (TDP) | 100 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 651K 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 Athlon II X4 651K and Ryzen 5 8645HS are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 651K and Ryzen 5 8645HS. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 760M |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 651K and Ryzen 5 8645HS.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 14 November 2011 | 6 December 2023 |
| Physical cores | 4 | 6 |
| Threads | 4 | 12 |
| Chip lithography | 32 nm | 4 nm |
| Power consumption (TDP) | 100 Watt | 45 Watt |
Ryzen 5 8645HS has an age advantage of 12 years, 50% more physical cores and 200% more threads, a 700% more advanced lithography process, and 122.2% lower power consumption.
We couldn't decide between Athlon II X4 651K and Ryzen 5 8645HS. We've got no test results to judge.
Note that Athlon II X4 651K is a desktop processor while Ryzen 5 8645HS is a notebook one.
Should you still have questions on choice between Athlon II X4 651K and Ryzen 5 8645HS, ask them in Comments section, and we shall answer.
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