EPYC 9355P vs Ryzen 9 3900X
Primary details
Comparing Ryzen 9 3900X and EPYC 9355P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 275 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 21.75 | no data |
| Market segment | Desktop processor | Server |
| Series | AMD Ryzen 9 | no data |
| Power efficiency | 15.55 | no data |
| Architecture codename | Matisse (Zen 2) (2019−2020) | Turin (2024) |
| Release date | 7 July 2019 (5 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $499 | $2,998 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 9 3900X and EPYC 9355P 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) | 32 (Dotriaconta-Core) |
| Threads | 24 | 64 |
| Base clock speed | 3.8 GHz | 3.55 GHz |
| Boost clock speed | 4.6 GHz | 4.4 GHz |
| L1 cache | 96K (per core) | 80 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 64 MB | 256 MB (shared) |
| Chip lithography | 7 nm, 12 nm | 4 nm |
| Die size | no data | 8x 70.6 mm2 |
| Maximum core temperature | 95 °C | no data |
| Number of transistors | 19,200 million | 66,520 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 3900X and EPYC 9355P 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 (Uniprocessor) | 1 |
| Socket | AM4 | SP5 |
| Power consumption (TDP) | 125 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 3900X and EPYC 9355P. 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 3900X and EPYC 9355P are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and EPYC 9355P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 51.196 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | - | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 3900X and EPYC 9355P.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 7 July 2019 | 10 October 2024 |
| Physical cores | 12 | 32 |
| Threads | 24 | 64 |
| Chip lithography | 7 nm | 4 nm |
| Power consumption (TDP) | 125 Watt | 280 Watt |
Ryzen 9 3900X has 124% lower power consumption.
EPYC 9355P, on the other hand, has an age advantage of 5 years, 166.7% more physical cores and 166.7% more threads, and a 75% more advanced lithography process.
We couldn't decide between Ryzen 9 3900X and EPYC 9355P. We've got no test results to judge.
Note that Ryzen 9 3900X is a desktop processor while EPYC 9355P is a server/workstation one.
Should you still have questions on choice between Ryzen 9 3900X and EPYC 9355P, ask them in Comments section, and we shall answer.
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