AMD® Ryzen™ 9 7945HX

The AMD Ryzen 9 7945HX is a laptop processor with 16 cores and 32 threads, built on the Zen 4 architecture (5 nm process). It launched in Feb 2023. Clocks run from 2.5 GHz base to 5.4 GHz boost. A 64-MB L3 cache backs the cores (5.1 MB per core). It addresses DDR5 memory up to 64 GB across 2 channels. The chip drops into the FL1 socket and exposes PCIe 5.0 (28 lanes). Rated TDP is 55 W. Notable platform capabilities: Neural Processing Unit (NPU), AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD Ryzen 9 7945HX scores 4,011 in single-core performance and 53,770 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 14,686 for overall performance, 40,566 for productivity performance, 36,793 for creator performance, 61,835 for engineering performance and 25,476 for gaming performance. Its multi-core throughput works out to 3,361 per core, 1,680 per thread and 978 per watt. Its computed efficiency index is 1,980. Its performance index is 182, so its overall performance is 82% 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 9 7945HX scores 204,565 in integer math, 121,769 in floating-point math, 697,282 in compression, 42,131 in cryptography, 2,434 in physics simulation, 51,110 in vector SIMD, 279 in the prime sieve and 81,187 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 247% above in integer math, 165% above in floating-point math, 206% above in compression, 267% above in cryptography, 123% above in physics simulation, 230% above in vector SIMD, 316% above in the prime sieve and 258% 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 9 7945HX has 16 physical cores and runs 32 logical threads. It runs 2 threads per core. It runs at a base clock of 2.50 GHz and boosts up to 5.40 GHz.

The AMD Ryzen 9 7945HX is a laptop processor, belongs to the AMD Ryzen 9 family, uses the Zen 4 architecture, carries the codename Dragon Range and is manufactured on a 5 nm process. It launched in Feb 2023.

The AMD Ryzen 9 7945HX has 1 MB of L1 cache, 16 MB of L2 cache and 64 MB of L3 cache. That adds up to about 81.0 MB of cache, or 5.06 MB per core. Each core has 1 MB of private L2 cache.

The AMD Ryzen 9 7945HX has a 3-level cache hierarchy: L1 at 1 MB, L2 at 16 MB and L3 at 64 MB. L3 is the largest level and makes up about 79% of the cache listed here.

The AMD Ryzen 9 7945HX supports DDR5 memory, addresses up to 64 GB of memory, uses 2 memory channels, runs memory at up to 5,200 MT/s and delivers up to 83.2 GB/s of memory bandwidth. It does not support DDR4 and LPDDR memory.

The AMD Ryzen 9 7945HX includes integrated graphics.

The AMD Ryzen 9 7945HX uses the FL1 socket, supports PCI Express 5.0 and provides up to 28 PCIe lanes.

The AMD Ryzen 9 7945HX has a rated TDP of 55 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 9 7945HX is manufactured by TSMC.

Feex has recorded 59% of the specifications it tracks for the AMD Ryzen 9 7945HX. 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: 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 FL1 socket as the AMD Ryzen 9 7945HX and have the closest multi-core scores in the Feex database include AMD Ryzen 9 7940HX, AMD Ryzen 9 9850HX, AMD Ryzen 9 8945HX, AMD Ryzen 9 9955HX and AMD Ryzen 9 7945HX3D.