Ryzen Threadripper PRO 9945WX vs EPYC 7401
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 132 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 8.75 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 19.50 | no data |
| Designer | AMD | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Naples (2017−2018) | Shimada Peak (2025) |
| Release date | 29 June 2017 (7 years ago) | July 2025 |
| Launch price (MSRP) | $1,850 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 7401 and Ryzen Threadripper PRO 9945WX 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 | 24 (Tetracosa-Core) | 12 (Dodeca-Core) |
| Threads | 48 | 24 |
| Base clock speed | 2 GHz | 4.7 GHz |
| Boost clock speed | 3 GHz | 5.4 GHz |
| Multiplier | 20 | no data |
| L1 cache | 96K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 64 MB (shared) | 64 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | 192 mm2 | 2x 70.6 mm2 |
| Number of transistors | 4,800 million | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | + |
Compatibility
Information on EPYC 7401 and Ryzen Threadripper PRO 9945WX 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 | 2 (Multiprocessor) | 1 |
| Socket | TR4 | sTR5 |
| Power consumption (TDP) | 170 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7401 and Ryzen Threadripper PRO 9945WX. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7401 and Ryzen Threadripper PRO 9945WX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7401 and Ryzen Threadripper PRO 9945WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5 |
| Maximum memory size | 2 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 170.671 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 EPYC 7401 and Ryzen Threadripper PRO 9945WX.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 128 | 128 |
Pros & cons summary
| Physical cores | 24 | 12 |
| Threads | 48 | 24 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 170 Watt | 350 Watt |
EPYC 7401 has 100% more physical cores and 100% more threads, and 105.9% lower power consumption.
Ryzen Threadripper PRO 9945WX, on the other hand, has a 250% more advanced lithography process.
We couldn't decide between AMD EPYC 7401 and AMD Ryzen Threadripper PRO 9945WX. We've got no test results to judge.
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