EPYC 9645 vs EPYC 7763
Primary details
Comparing EPYC 7763 and EPYC 9645 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 25 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.32 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 17.99 | no data |
| Architecture codename | Milan (2021−2023) | Turin (2024) |
| Release date | 15 March 2021 (3 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $7,890 | $11,048 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7763 and EPYC 9645 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) | 96 |
| Threads | 128 | 192 |
| Base clock speed | 2.45 GHz | 2.3 GHz |
| Boost clock speed | 3.5 GHz | 3.7 GHz |
| Multiplier | 24.5 | no data |
| L1 cache | 64 KB (per core) | 80 KB (per core) |
| L2 cache | 512 KB (per core) | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 256 MB (shared) |
| Chip lithography | 7 nm+ | 3 nm |
| Die size | 8x 81 mm2 | no data |
| Number of transistors | 33,200 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on EPYC 7763 and EPYC 9645 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 | 2 |
| Socket | SP3 | SP5 |
| Power consumption (TDP) | 280 Watt | 320 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7763 and EPYC 9645. 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 7763 and EPYC 9645 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7763 and EPYC 9645. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Maximum memory bandwidth | 204.795 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC 7763 and EPYC 9645.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 128 |
Pros & cons summary
| Recency | 15 March 2021 | 10 October 2024 |
| Physical cores | 64 | 96 |
| Threads | 128 | 192 |
| Chip lithography | 7 nm | 3 nm |
| Power consumption (TDP) | 280 Watt | 320 Watt |
EPYC 7763 has 14.3% lower power consumption.
EPYC 9645, on the other hand, has an age advantage of 3 years, 50% more physical cores and 50% more threads, and a 133.3% more advanced lithography process.
We couldn't decide between EPYC 7763 and EPYC 9645. We've got no test results to judge.
Should you still have questions on choice between EPYC 7763 and EPYC 9645, ask them in Comments section, and we shall answer.
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