AMD Ryzen Threadripper PRO 9955WX 16C/32T sTR5 4.5GHz/5.4GHz DDR5 64MB 350W (Boxed)
AMD Ryzen Threadripper PRO 9955WX: 16-core/32-thread workstation CPU on Shimada Peak (Zen5). 4.5GHz base/5.4GHz boost, 64MB L3, octa-channel DDR5, 148 PCIe 5.0 lanes, sTR5 socket, 350W TDP. Excels in multi-threaded workloads.
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The AMD Ryzen Threadripper PRO 9955WX is a high-performance workstation processor from AMD’s 9000WX series, built on the Shimada Peak architecture (Zen 5). Featuring 16 cores and 32 threads, it delivers exceptional multi-threaded performance for demanding professional applications like 3D rendering, video editing, scientific simulations, and content creation workflows.
With a base clock of 4.5 GHz boosting up to 5.4 GHz, 64MB L3 cache, octa-channel DDR5 memory support, and a massive 148 PCIe 5.0 lanes, this sTR5 socket CPU is optimized for enterprise-grade motherboards. Its 350W TDP requires robust cooling solutions, making it ideal for HEDT and workstation builds.
- 16 cores / 32 threads for superior multi-threading [1][2]
- 4.5-5.4 GHz clocks with 64MB L3 cache [1][2]
- Octa-channel DDR5 + 148 PCIe 5.0 lanes [1]
- Outstanding benchmarks: Top single-thread (4,544 MOps/Sec), strong multi-core [2][3]
- Released Q3 2025, desktop/server class [1][2]
| Processor manufacturer | AMD |
| Processor family | AMD Ryzen Threadripper PRO |
| Processor cores | 16 |
| Processor threads | 32 |
| Processor socket | Socket sTR5 |
| Processor base frequency | 4.5 GHz |
| Processor boost frequency | 5.4 GHz |
| Processor cache | 64 MB |
| Processor cache type | L3 |
| Thermal Design Power (TDP) | 350 W |
| Package type | Box |
| Memory types supported by processor | DDR5-SDRAM |
| Memory channels | Octa-channel |
| On-board graphics card model | Not available |
| Maximum number of PCI Express lanes | 148 |
| PCI Express slots version | 5.0 |
| Architecture codename | Shimada Peak |
| Release date | Q3 2025 |
| Minimum operating temperature | 5 °C |
| Maximum operating temperature | 95 °C |
| L1 cache | 64 KB (per core) |
| L2 cache | 1 MB (per core) |
| Market segment | Desktop/Server |