Ryzen 9 9900X vs EPYC Embedded 3251
Primary details
Comparing EPYC Embedded 3251 and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 107 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 66.71 |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC Embedded | no data |
| Power efficiency | no data | 27.22 |
| Architecture codename | Zen (2017−2020) | Granite Ridge (2024) |
| Release date | 21 February 2018 (6 years ago) | 15 August 2024 (less than a year ago) |
| Launch price (MSRP) | $315 | $499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC Embedded 3251 and Ryzen 9 9900X 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 | 8 (Octa-Core) | 12 (Dodeca-Core) |
| Threads | 16 | 24 |
| Base clock speed | 2.5 GHz | 4.4 GHz |
| Boost clock speed | 2.5 GHz | 5.6 GHz |
| Multiplier | 25 | no data |
| L1 cache | 768 KB | 80 KB (per core) |
| L2 cache | 4 MB | 1 MB (per core) |
| L3 cache | 16 MB (shared) | 64 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | 213 mm2 | 2x 70.6 mm2 |
| Maximum core temperature | no data | 95 °C |
| Number of transistors | 4800 Million | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | + |
Compatibility
Information on EPYC Embedded 3251 and Ryzen 9 9900X 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 | TR4 | AM5 |
| Power consumption (TDP) | 55 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC Embedded 3251 and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC Embedded 3251 and Ryzen 9 9900X are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC Embedded 3251 and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5 |
| Maximum memory size | 512 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 42.671 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by EPYC Embedded 3251 and Ryzen 9 9900X.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 24 |
Pros & cons summary
| Recency | 21 February 2018 | 15 August 2024 |
| Physical cores | 8 | 12 |
| Threads | 16 | 24 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 55 Watt | 120 Watt |
EPYC Embedded 3251 has 118.2% lower power consumption.
Ryzen 9 9900X, on the other hand, has an age advantage of 6 years, 50% more physical cores and 50% more threads, and a 250% more advanced lithography process.
We couldn't decide between EPYC Embedded 3251 and Ryzen 9 9900X. We've got no test results to judge.
Be aware that EPYC Embedded 3251 is a server/workstation processor while Ryzen 9 9900X is a desktop one.
Should you still have questions on choice between EPYC Embedded 3251 and Ryzen 9 9900X, ask them in Comments section, and we shall answer.
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