EPYC 9845 vs Ryzen 9 7900X3D
Primary details
Comparing Ryzen 9 7900X3D and EPYC 9845 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 127 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 49.10 | no data |
| Market segment | Desktop processor | Server |
| Series | AMD Ryzen 9 | no data |
| Power efficiency | 25.02 | no data |
| Architecture codename | Raphael (2023−2024) | Turin (2024) |
| Release date | 4 January 2023 (1 year ago) | 10 October 2024 (recently) |
| Launch price (MSRP) | $599 | $13,564 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 7900X3D 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 | 12 (Dodeca-Core) | 160 |
| Threads | 24 | 320 |
| Base clock speed | 4.4 GHz | 2.1 GHz |
| Boost clock speed | 5.6 GHz | 3.7 GHz |
| L1 cache | 768 KB | 80 KB (per core) |
| L2 cache | 12 MB | 1 MB (per core) |
| L3 cache | 128 MB (shared) | 320 MB (shared) |
| Chip lithography | 5 nm, 6 nm | 3 nm |
| Die size | 71+71+122 mm | no data |
| Maximum case temperature (TCase) | 47 °C | no data |
| Number of transistors | 13,140 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 7900X3D 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 | 1 | 2 |
| Socket | AM5 | SP5 |
| Power consumption (TDP) | 120 Watt | 390 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7900X3D 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 Ryzen 9 7900X3D and EPYC 9845 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7900X3D and EPYC 9845. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-5200 | DDR5 |
| Maximum memory size | 128 GB | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7900X3D and EPYC 9845.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 24 | 128 |
Pros & cons summary
| Recency | 4 January 2023 | 10 October 2024 |
| Physical cores | 12 | 160 |
| Threads | 24 | 320 |
| Chip lithography | 5 nm | 3 nm |
| Power consumption (TDP) | 120 Watt | 390 Watt |
Ryzen 9 7900X3D has 225% lower power consumption.
EPYC 9845, on the other hand, has an age advantage of 1 year, 1233.3% more physical cores and 1233.3% more threads, and a 66.7% more advanced lithography process.
We couldn't decide between Ryzen 9 7900X3D and EPYC 9845. We've got no test results to judge.
Note that Ryzen 9 7900X3D is a desktop processor while EPYC 9845 is a server/workstation one.
Should you still have questions on choice between Ryzen 9 7900X3D and EPYC 9845, ask them in Comments section, and we shall answer.
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