AMD® Ryzen™ 9 7945HX3D

The AMD Ryzen 9 7945HX3D is a laptop processor with 16 cores and 32 threads, built on the Zen 4 architecture (5 nm process). It launched in Jul 2023. Clocks run from 2.3 GHz base to 5.4 GHz boost. A 128-MB L3 cache backs the cores (9.1 MB per core). It supports DDR5 memory. 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 7945HX3D scores 4,066 in single-core performance and 57,494 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 15,290 for overall performance, 43,064 for productivity performance, 38,941 for creator performance, 66,118 for engineering performance and 26,572 for gaming performance. Its multi-core throughput works out to 3,593 per core, 1,797 per thread and 1,045 per watt. Its computed efficiency index is 2,062. Its performance index is 189, so its overall performance is 89% 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 7945HX3D scores 201,443 in integer math, 121,214 in floating-point math, 701,895 in compression, 42,574 in cryptography, 4,370 in physics simulation, 52,092 in vector SIMD, 439 in the prime sieve and 84,399 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 242% above in integer math, 164% above in floating-point math, 208% above in compression, 271% above in cryptography, 301% above in physics simulation, 236% above in vector SIMD, 555% above in the prime sieve and 273% 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 7945HX3D has 16 physical cores and runs 32 logical threads. It does not use a hybrid performance and efficiency core layout. It runs 2 threads per core. It runs at a base clock of 2.30 GHz and boosts up to 5.40 GHz.

The AMD Ryzen 9 7945HX3D 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 Jul 2023.

The AMD Ryzen 9 7945HX3D has 1 MB of L1 cache, 16 MB of L2 cache and 128 MB of L3 cache. That adds up to about 145.0 MB of cache, or 9.06 MB per core. Each core has 1 MB of private L2 cache.

The AMD Ryzen 9 7945HX3D has a 3-level cache hierarchy: L1 at 1 MB, L2 at 16 MB and L3 at 128 MB. L3 is the largest level and makes up about 88% of the cache listed here.

The AMD Ryzen 9 7945HX3D supports DDR5 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 7945HX3D uses the FL1 socket, supports PCI Express 5.0 and provides up to 28 PCIe lanes.

The AMD Ryzen 9 7945HX3D 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 7945HX3D is manufactured by TSMC.

Feex has recorded 58% of the specifications it tracks for the AMD Ryzen 9 7945HX3D. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: ECC Memory. Graphics: Integrated Graphics, Graphics Model, 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: SKU, Model Number, Processor Number and Part Number.

Processors that use the same FL1 socket as the AMD Ryzen 9 7945HX3D and have the closest multi-core scores in the Feex database include AMD Ryzen 9 9955HX, AMD Ryzen 9 7945HX, AMD Ryzen 9 7940HX, AMD Ryzen 9 9955HX3D and AMD Ryzen 9 9850HX.