Xeon 6781P vs Ryzen Threadripper PRO 3945WX
Aggregate performance score
Xeon 6781P outperforms Ryzen Threadripper PRO 3945WX by a whopping 252% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 353 | 21 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Series | AMD Ryzen Threadripper | no data |
| Power efficiency | 2.87 | 8.10 |
| Designer | AMD | Intel |
| Manufacturer | TSMC | no data |
| Architecture codename | Castle Peak (2020) | no data |
| Release date | 14 July 2020 (5 years ago) | 1 January 2025 (less than a year ago) |
Detailed specifications
Ryzen Threadripper PRO 3945WX and Xeon 6781P 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 | 12 (Dodeca-Core) | 80 |
| Threads | 24 | 160 |
| Base clock speed | 4 GHz | 2 GHz |
| Boost clock speed | 4.3 GHz | 3.8 GHz |
| Multiplier | 40 | no data |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 512 KB (per core) | no data |
| L3 cache | 64 MB | 336 MB |
| Chip lithography | 7 nm, 12 nm | Intel 3 nm |
| Die size | 2x 74 mm2 | no data |
| Maximum core temperature | no data | 81 °C |
| Maximum case temperature (TCase) | 95 °C | no data |
| Number of transistors | 7,600 million | no data |
| 64 bit support | + | - |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Ryzen Threadripper PRO 3945WX and Xeon 6781P 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 | no data |
| Socket | WRX8 | FCLGA4710 |
| Power consumption (TDP) | 280 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper PRO 3945WX and Xeon 6781P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | - |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Deep Learning Boost | - | + |
Security technologies
Ryzen Threadripper PRO 3945WX and Xeon 6781P technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| SGX | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen Threadripper PRO 3945WX and Xeon 6781P 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 Ryzen Threadripper PRO 3945WX and Xeon 6781P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5(6400MT/s), MRDIMM(8800MT/s) |
| Maximum memory size | 2 TiB | 4 TB |
| Max memory channels | no data | 8 |
| Maximum memory bandwidth | 204.8 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Ryzen Threadripper PRO 3945WX and Xeon 6781P.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 136 |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 19.04 | 67.11 |
| Recency | 14 July 2020 | 1 January 2025 |
| Physical cores | 12 | 80 |
| Threads | 24 | 160 |
| Power consumption (TDP) | 280 Watt | 350 Watt |
Ryzen Threadripper PRO 3945WX has 25% lower power consumption.
Xeon 6781P, on the other hand, has a 252.5% higher aggregate performance score, an age advantage of 4 years, and 566.7% more physical cores and 566.7% more threads.
The Intel Xeon 6781P is our recommended choice as it beats the AMD Ryzen Threadripper PRO 3945WX in performance tests.
Other comparisons
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