i9-13900KF vs EPYC 7251
Aggregate performance score
Core i9-13900KF outperforms EPYC 7251 by a whopping 291% based on our aggregate benchmark results.
Primary details
Comparing EPYC 7251 and Core i9-13900KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 805 | 93 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.79 | 61.40 |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | Intel Core i9 |
| Power efficiency | 7.41 | 13.74 |
| Architecture codename | Naples (2017−2018) | Raptor Lake, Raptor Cove, Gracemont (2022) |
| Release date | 29 June 2017 (7 years ago) | 27 September 2022 (2 years ago) |
| Launch price (MSRP) | $574 | $564 |
Cost-effectiveness evaluation
Performance per price, higher is better.
i9-13900KF has 2101% better value for money than EPYC 7251.
Detailed specifications
EPYC 7251 and Core i9-13900KF 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) | 24 (Tetracosa-Core) |
| Threads | 16 | 32 |
| Base clock speed | 2.1 GHz | 3 GHz |
| Boost clock speed | 2.9 GHz | 5.7 GHz |
| Bus rate | no data | 4 × 16 GT/s |
| Multiplier | 21 | 30 |
| L1 cache | 96K (per core) | 80K (per core) |
| L2 cache | 512K (per core) | 2 MB (per core) |
| L3 cache | 32 MB (shared) | 36 MB (shared) |
| Chip lithography | 14 nm | Intel 7 nm |
| Die size | 192 mm2 | 257 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | + |
Compatibility
Information on EPYC 7251 and Core i9-13900KF 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 (Multiprocessor) | 1 |
| Socket | TR4 | FCLGA1700 |
| Power consumption (TDP) | 120 Watt | 125 W, 253 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7251 and Core i9-13900KF. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
EPYC 7251 and Core i9-13900KF technologies aimed at improving security, for example, by protecting against hacks.
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7251 and Core i9-13900KF are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7251 and Core i9-13900KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5-5600, DDR4-3200 |
| Maximum memory size | 2 TiB | 192 GB |
| Max memory channels | 8 | 2 |
| Maximum memory bandwidth | 153.652 GB/s | 89.604 GB/s |
| ECC memory support | + | - |
Peripherals
Specifications and connection of peripherals supported by EPYC 7251 and Core i9-13900KF.
| PCIe version | 3.0 | 5.0 and 4.0 |
| PCI Express lanes | 128 | 20 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 9.40 | 36.72 |
| Recency | 29 June 2017 | 27 September 2022 |
| Physical cores | 8 | 24 |
| Threads | 16 | 32 |
| Power consumption (TDP) | 120 Watt | 125 Watt |
EPYC 7251 has 4.2% lower power consumption.
i9-13900KF, on the other hand, has a 290.6% higher aggregate performance score, an age advantage of 5 years, and 200% more physical cores and 100% more threads.
The Core i9-13900KF is our recommended choice as it beats the EPYC 7251 in performance tests.
Be aware that EPYC 7251 is a server/workstation processor while Core i9-13900KF is a desktop one.
Should you still have questions on choice between EPYC 7251 and Core i9-13900KF, ask them in Comments section, and we shall answer.
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