AMD® Ryzen™ 9 PRO 9945

The AMD Ryzen 9 PRO 9945 is a desktop processor with 12 cores and 24 threads, built on the Zen 5 architecture (4 nm process). It launched in Jan 2026. Clocks run from 3.4 GHz base to 5.4 GHz boost. A 64-MB L3 cache backs the cores (6.4 MB per core). It addresses DDR5 memory up to 192 GB across 2 channels. The chip drops into the AM5 socket and exposes PCIe 5.0 (28 lanes). Rated TDP is 65 W. Notable platform capabilities: AVX-512, AVX-VNNI, AMD-V (Hardware Virtualization), AMD SEV.

The AMD Ryzen 9 PRO 9945 scores 4,619 in single-core performance and 48,634 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 14,988 for overall performance, 38,079 for productivity performance, 35,063 for creator performance, 52,889 for engineering performance and 26,016 for gaming performance. Its multi-core throughput works out to 4,053 per core, 2,026 per thread and 748 per watt. Its computed efficiency index is 1,859. Its performance index is 186, so its overall performance is 86% 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 PRO 9945 scores 171,175 in integer math, 107,340 in floating-point math, 579,972 in compression, 30,450 in cryptography, 2,902 in physics simulation, 44,374 in vector SIMD, 342 in the prime sieve and 62,458 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 191% above in integer math, 134% above in floating-point math, 154% above in compression, 165% above in cryptography, 166% above in physics simulation, 186% above in vector SIMD, 410% above in the prime sieve and 176% 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 PRO 9945 has 12 physical cores and runs 24 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 3.40 GHz and boosts up to 5.40 GHz.

The AMD Ryzen 9 PRO 9945 is a desktop processor, belongs to the AMD Ryzen 9 family, uses the Zen 5 architecture, carries the codename Granite Ridge and is manufactured on a 4 nm process. It launched in Jan 2026.

The AMD Ryzen 9 PRO 9945 has 960 KB of L1 cache, 12 MB of L2 cache and 64 MB of L3 cache. That adds up to about 76.9 MB of cache, or 6.41 MB per core. Each core has 1 MB of private L2 cache.

The AMD Ryzen 9 PRO 9945 has a 3-level cache hierarchy: L1 at 960 KB, L2 at 12 MB and L3 at 64 MB. L3 is the largest level and makes up about 83% of the cache listed here.

The AMD Ryzen 9 PRO 9945 supports DDR5 memory, addresses up to 192 GB of memory and uses 2 memory channels. It does not support DDR4 and LPDDR memory.

The AMD Ryzen 9 PRO 9945 includes integrated graphics.

The AMD Ryzen 9 PRO 9945 uses the AM5 socket, supports PCI Express 5.0 and provides up to 28 PCIe lanes.

The AMD Ryzen 9 PRO 9945 has a rated TDP of 65 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 PRO 9945 is manufactured by TSMC.

The AMD Ryzen 9 PRO 9945 is also identified by the model number 9945.

Feex has recorded 60% of the specifications it tracks for the AMD Ryzen 9 PRO 9945. 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: Memory Bandwidth, ECC Memory and Max Memory Speed. 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: SKU, Processor Number and Part Number.

Processors that use the same AM5 socket as the AMD Ryzen 9 PRO 9945 and have the closest multi-core scores in the Feex database include AMD Ryzen 9 7900, AMD EPYC 4465P, AMD EPYC 4464P, AMD Ryzen 9 PRO 7945 and AMD Ryzen 9 7900X3D.