AMD® Ryzen™ 5 8645HS

The AMD Ryzen 5 8645HS is a laptop processor with 6 cores and 12 threads, built on the Zen 4 architecture (4 nm process). It launched in Dec 2023. Clocks run from 4.3 GHz base to 5.0 GHz boost. A 16-MB L3 cache backs the cores (3.7 MB per core). It addresses DDR5 memory up to 256 GB across 2 channels. The chip drops into the FP7 socket and exposes PCIe 4.0 (20 lanes). Rated TDP is 45 W.

The AMD Ryzen 5 8645HS scores 3,554 in single-core performance and 21,977 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 8,838 for overall performance, 19,261 for productivity performance, 18,485 for creator performance, 21,840 for engineering performance and 16,156 for gaming performance. Its multi-core throughput works out to 3,663 per core, 1,831 per thread and 488 per watt. Its computed efficiency index is 1,318. Its performance index is 110, so its overall performance is 10% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD Ryzen 5 8645HS scores 70,510 in integer math, 43,630 in floating-point math, 257,427 in compression, 15,163 in cryptography, 1,076 in physics simulation, 19,528 in vector SIMD, 73 in the prime sieve and 31,063 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 20% above in integer math, 5% below in floating-point math, 13% above in compression, 32% above in cryptography, 1% below in physics simulation, 26% above in vector SIMD, 9% above in the prime sieve and 37% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD Ryzen 5 8645HS has 6 physical cores and runs 12 logical threads. It runs 2 threads per core. It runs at a base clock of 4.30 GHz and boosts up to 5.00 GHz.

The AMD Ryzen 5 8645HS is a laptop processor, belongs to the AMD Ryzen 5 family, uses the Zen 4 architecture, carries the codename Hawk Point and is manufactured on a 4 nm process. It launched in Dec 2023.

The AMD Ryzen 5 8645HS has 384 KB of L1 cache, 6 MB of L2 cache and 16 MB of L3 cache. That adds up to about 22.4 MB of cache, or 3.73 MB per core. Each core has 1 MB of private L2 cache.

The AMD Ryzen 5 8645HS has a 3-level cache hierarchy: L1 at 384 KB, L2 at 6 MB and L3 at 16 MB. L3 is the largest level and makes up about 72% of the cache listed here.

The AMD Ryzen 5 8645HS supports DDR5 memory, addresses up to 256 GB of memory, uses 2 memory channels and runs memory at up to 7,500 MT/s. It does not support DDR4 and LPDDR memory.

The AMD Ryzen 5 8645HS includes integrated graphics.

The AMD Ryzen 5 8645HS uses the FP7 socket, supports PCI Express 4.0 and provides up to 20 PCIe lanes.

The AMD Ryzen 5 8645HS has a rated TDP of 45 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The AMD Ryzen 5 8645HS is manufactured by TSMC.

Feex has recorded 58% of the specifications it tracks for the AMD Ryzen 5 8645HS. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: Memory Bandwidth and ECC Memory. Graphics: Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Launch Price. Naming & Aliases: Normalized Name, SKU, Model Number, Processor Number and Part Number.

Processors that use the same FP7 socket as the AMD Ryzen 5 8645HS and have the closest multi-core scores in the Feex database include AMD Ryzen 7 7736U, AMD Ryzen 7 7735HS, AMD Ryzen 7 6800HS, AMD Ryzen 7 6800H and AMD Ryzen 5 7640HS.