Threadripper PRO 7945WX vs Ryzen Threadripper PRO 3975WX
Primary details
Comparing Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 67 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Series | AMD Ryzen Threadripper | no data |
| Power efficiency | 13.31 | no data |
| Architecture codename | Matisse (2019−2020) | Storm Peak (2023) |
| Release date | 14 July 2020 (4 years ago) | 19 October 2023 (1 year ago) |
| Launch price (MSRP) | no data | $1,399 |
Detailed specifications
Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX 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 | 32 (Dotriaconta-Core) | 12 (Dodeca-Core) |
| Threads | 64 | 24 |
| Base clock speed | 3.5 GHz | 4.7 GHz |
| Boost clock speed | 4.2 GHz | 5.3 GHz |
| Multiplier | 35 | no data |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 128 MB | 64 MB (shared) |
| Chip lithography | 7 nm, 12 nm | 5 nm |
| Die size | 74 mm2 | 2x 71 mm2 |
| Maximum core temperature | 95 °C | no data |
| Maximum case temperature (TCase) | 95 °C | no data |
| Number of transistors | 3,800 million | 13,140 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | + |
Compatibility
Information on Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX 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 | 1 |
| Socket | sWRX8 | sTR5 |
| Power consumption (TDP) | 280 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX. 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 Threadripper PRO 7945WX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX. 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 Threadripper PRO 7945WX.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 128 |
Pros & cons summary
| Recency | 14 July 2020 | 19 October 2023 |
| Physical cores | 32 | 12 |
| Threads | 64 | 24 |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 280 Watt | 350 Watt |
Ryzen Threadripper PRO 3975WX has 166.7% more physical cores and 166.7% more threads, and 25% lower power consumption.
Threadripper PRO 7945WX, on the other hand, has an age advantage of 3 years, and a 40% more advanced lithography process.
We couldn't decide between Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX. We've got no test results to judge.
Be aware that Ryzen Threadripper PRO 3975WX is a server/workstation processor while Threadripper PRO 7945WX is a desktop one.
Should you still have questions on choice between Ryzen Threadripper PRO 3975WX and Threadripper PRO 7945WX, ask them in Comments section, and we shall answer.
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