Ryzen Threadripper PRO 9955WX vs Xeon Platinum 8156
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon Platinum | no data |
| Designer | Intel | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Skylake (server) (2017−2018) | Shimada Peak (2025) |
| Release date | 25 April 2017 (8 years ago) | July 2025 |
| Launch price (MSRP) | $7,007 | no data |
Detailed specifications
Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 16 (Hexadeca-Core) |
| Threads | 8 | 32 |
| Base clock speed | 3.6 GHz | 4.5 GHz |
| Boost clock speed | 3.7 GHz | 5.4 GHz |
| Multiplier | 36 | no data |
| L1 cache | 256 KB | 64 KB (per core) |
| L2 cache | 4 MB | 1 MB (per core) |
| L3 cache | 16.5 MB | 64 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | no data | 2x 70.6 mm2 |
| Maximum core temperature | 71 °C | no data |
| Number of transistors | no data | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 8 (Multiprocessor) | 1 |
| Socket | FCLGA3647 | sTR5 |
| Power consumption (TDP) | 105 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Precision Boost 2 | no data | + |
Security technologies
Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR5 |
| Maximum memory size | 768 GB | no data |
| Max memory channels | 6 | no data |
| Maximum memory bandwidth | 128.001 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon Platinum 8156 and Ryzen Threadripper PRO 9955WX.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 48 | 128 |
Pros & cons summary
| Physical cores | 4 | 16 |
| Threads | 8 | 32 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 105 Watt | 350 Watt |
Xeon Platinum 8156 has 233.3% lower power consumption.
Ryzen Threadripper PRO 9955WX, on the other hand, has 300% more physical cores and 300% more threads, and a 250% more advanced lithography process.
We couldn't decide between Intel Xeon Platinum 8156 and AMD Ryzen Threadripper PRO 9955WX. We've got no test results to judge.
Be aware that Xeon Platinum 8156 is a server/workstation processor while Ryzen Threadripper PRO 9955WX is a desktop one.
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