Ryzen Threadripper PRO 9955WX vs EPYC 7662
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 59 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | no data |
| Power efficiency | 7.73 | no data |
| Designer | AMD | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | Zen 2 (2017−2020) | Shimada Peak (2025) |
| Release date | 19 February 2020 (5 years ago) | July 2025 (recently) |
Detailed specifications
EPYC 7662 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 | 64 (Tetrahexaconta-Core) | 16 (Hexadeca-Core) |
| Threads | 128 | 32 |
| Base clock speed | 2 GHz | 4.5 GHz |
| Boost clock speed | 3.3 GHz | 5.4 GHz |
| Multiplier | 20 | no data |
| L1 cache | 4 MB | 64 KB (per core) |
| L2 cache | 32 MB | 1 MB (per core) |
| L3 cache | 256 MB | 64 MB (shared) |
| Chip lithography | 7 nm, 14 nm | 4 nm |
| Die size | no data | 2x 70.6 mm2 |
| Number of transistors | no data | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on EPYC 7662 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 | no data | 1 |
| Socket | Socket SP3 | sTR5 |
| Power consumption (TDP) | 225 Watt | 350 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7662 and Ryzen Threadripper PRO 9955WX. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7662 and Ryzen Threadripper PRO 9955WX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7662 and Ryzen Threadripper PRO 9955WX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 204.763 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 7662 and Ryzen Threadripper PRO 9955WX.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 136 |
Pros & cons summary
| Physical cores | 64 | 16 |
| Threads | 128 | 32 |
| Chip lithography | 7 nm | 4 nm |
| Power consumption (TDP) | 225 Watt | 350 Watt |
EPYC 7662 has 300% more physical cores and 300% more threads, and 55.6% lower power consumption.
Ryzen Threadripper PRO 9955WX, on the other hand, has a 75% more advanced lithography process.
We couldn't decide between AMD EPYC 7662 and AMD Ryzen Threadripper PRO 9955WX. We've got no test results to judge.
Be aware that EPYC 7662 is a server/workstation processor while Ryzen Threadripper PRO 9955WX is a desktop one.
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