EPYC 7642 vs Ryzen Threadripper 1977X
Primary details
Comparing Ryzen Threadripper 1977X and EPYC 7642 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 91 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 5.27 |
| Market segment | Desktop processor | Server |
| Series | no data | AMD EPYC |
| Power efficiency | no data | 15.57 |
| Architecture codename | Zen (2017−2020) | Zen 2 (2017−2020) |
| Release date | no data (2024 years ago) | 7 August 2019 (5 years ago) |
| Launch price (MSRP) | no data | $4,775 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen Threadripper 1977X and EPYC 7642 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 | 14 (Tetradeca-Core) | 48 (Octatetraconta-Core) |
| Threads | no data | 96 |
| Base clock speed | no data | 2.4 GHz |
| Boost clock speed | 3.5 GHz | 3.4 GHz |
| Multiplier | no data | 23 |
| L1 cache | 128 KB (per core) | 96K (per core) |
| L2 cache | 512 KB (per core) | 512K (per core) |
| L3 cache | 32768 KB | 256 MB (shared) |
| Chip lithography | 14 nm | 7 nm, 14 nm |
| Die size | no data | 192 mm2 |
| Number of transistors | no data | 4,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Ryzen Threadripper 1977X and EPYC 7642 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 (Multiprocessor) |
| Socket | SP3r2 | TR4 |
| Power consumption (TDP) | 155 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen Threadripper 1977X and EPYC 7642. 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 Ryzen Threadripper 1977X and EPYC 7642 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper 1977X and EPYC 7642. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR4 Eight-channel |
| Maximum memory size | no data | 4 TiB |
| Max memory channels | no data | 8 |
| Maximum memory bandwidth | no data | 204.763 GB/s |
| ECC memory support | - | + |
Pros & cons summary
| Physical cores | 14 | 48 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 155 Watt | 225 Watt |
Ryzen Threadripper 1977X has 45.2% lower power consumption.
EPYC 7642, on the other hand, has 242.9% more physical cores, and a 100% more advanced lithography process.
We couldn't decide between Ryzen Threadripper 1977X and EPYC 7642. We've got no test results to judge.
Note that Ryzen Threadripper 1977X is a desktop processor while EPYC 7642 is a server/workstation one.
Should you still have questions on choice between Ryzen Threadripper 1977X and EPYC 7642, ask them in Comments section, and we shall answer.
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