EPYC 9845 vs EPYC 9745
Primary details
Comparing EPYC 9745 and EPYC 9845 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Architecture codename | Turin (2024) | Turin (2024) |
| Release date | 10 October 2024 (less than a year ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $12,141 | $13,564 |
Detailed specifications
EPYC 9745 and EPYC 9845 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 | 128 | 160 |
| Threads | 256 | 320 |
| Base clock speed | 2.4 GHz | 2.1 GHz |
| Boost clock speed | 3.7 GHz | 3.7 GHz |
| L1 cache | 80 KB (per core) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 320 MB (shared) |
| Chip lithography | 3 nm | 3 nm |
| 64 bit support | + | + |
Compatibility
Information on EPYC 9745 and EPYC 9845 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 | SP5 | SP5 |
| Power consumption (TDP) | 400 Watt | 390 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 9745 and EPYC 9845. 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 9745 and EPYC 9845 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 9745 and EPYC 9845. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
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 9745 and EPYC 9845.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 128 | 128 |
Pros & cons summary
| Physical cores | 128 | 160 |
| Threads | 256 | 320 |
| Power consumption (TDP) | 400 Watt | 390 Watt |
EPYC 9845 has 25% more physical cores and 25% more threads, and 2.6% lower power consumption.
We couldn't decide between EPYC 9745 and EPYC 9845. We've got no test results to judge.
Should you still have questions on choice between EPYC 9745 and EPYC 9845, ask them in Comments section, and we shall answer.
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