EPYC 9256 vs Ryzen Threadripper PRO 3975WX
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 134 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | AMD Ryzen Threadripper | no data |
| Power efficiency | 5.39 | no data |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Matisse (2019−2020) | Venice (2004−2026) |
| Release date | 14 July 2020 (6 years ago) | 23 July 2026 (less than a year ago) |
| Launch price (MSRP) | no data | $2,501 |
Detailed specifications
Basic parameters of Ryzen Threadripper PRO 3975WX and EPYC 9256: 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 | 32 (Dotriaconta-Core) | 24 (Tetracosa-Core) |
| Threads | 64 | 48 |
| Base clock speed | 3.5 GHz | 2.85 GHz |
| Boost clock speed | 4.2 GHz | 4.5 GHz |
| Multiplier | 35 | no data |
| L1 cache | 64K (per core) | 80 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 128 MB | 96 MB (shared) |
| Chip lithography | 7 nm, 12 nm | 2 nm |
| Die size | 74 mm2 | 8x 76 mm2 |
| Maximum core temperature | 95 °C | no data |
| Maximum case temperature (TCase) | 95 °C | no data |
| Number of transistors | 3,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen Threadripper PRO 3975WX and EPYC 9256 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 | 1 | 2 |
| Socket | sWRX8 | SP8 |
| Power consumption (TDP) | 280 Watt | 190 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper PRO 3975WX and EPYC 9256. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, AVX2, BMI1, BMI2, SHA, F16C, FMA3, AMD64, EVP, AMD-V, SMAP, SMEP, SMT, Precision Boost 2, XFR 2 | no data |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen Threadripper PRO 3975WX and EPYC 9256 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper PRO 3975WX and EPYC 9256. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 |
| Maximum memory size | 2 TiB | no data |
| Maximum memory bandwidth | 204.8 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen Threadripper PRO 3975WX and EPYC 9256.
| PCIe version | 4.0 | 6.0 |
| PCI Express lanes | 128 | 128 |
Pros & cons summary
| Recency | 14 July 2020 | 23 July 2026 |
| Physical cores | 32 | 24 |
| Threads | 64 | 48 |
| Chip lithography | 7 nm | 2 nm |
| Power consumption (TDP) | 280 Watt | 190 Watt |
Ryzen Threadripper PRO 3975WX has 33% more physical cores and 33% more threads.
EPYC 9256, on the other hand, has an age advantage of 6 years, a 250% more advanced lithography process, and 47% lower power consumption.
We couldn't decide between AMD Ryzen Threadripper PRO 3975WX and AMD EPYC 9256. We've got no test results to judge.
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