EPYC 9555 vs i9-12900KF
Primary details
Comparing Core i9-12900KF and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 188 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 36.83 | no data |
| Market segment | Desktop processor | Server |
| Series | Intel Core i9 | no data |
| Power efficiency | 19.59 | no data |
| Architecture codename | Alder Lake, Golden Cove, Gracemont (2021) | Turin (2024) |
| Release date | 4 November 2021 (3 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $564 | $9,826 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-12900KF and EPYC 9555 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 | 16 (Hexadeca-Core) | 64 (Tetrahexaconta-Core) |
| Threads | 24 | 128 |
| Base clock speed | 3.2 GHz | 3.2 GHz |
| Boost clock speed | 5.2 GHz | 4.4 GHz |
| Bus type | DMI 4.0 | no data |
| Bus rate | 8 × 16 GT/s | no data |
| Multiplier | 32 | no data |
| L1 cache | 80K (per core) | 80 KB (per core) |
| L2 cache | 1.25 MB (per core) | 1 MB (per core) |
| L3 cache | 30 MB (shared) | 256 MB (shared) |
| Chip lithography | Intel 7 nm | 4 nm |
| Die size | 215.25 mm2 | 8x 70.6 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 66,520 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-12900KF and EPYC 9555 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 | FCLGA1700 | SP5 |
| Power consumption (TDP) | 125 Watt | 360 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-12900KF and EPYC 9555. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Turbo Boost Max 3.0 | + | no data |
| Precision Boost 2 | no data | + |
| Deep Learning Boost | + | - |
Security technologies
Core i9-12900KF and EPYC 9555 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 Core i9-12900KF and EPYC 9555 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 Core i9-12900KF and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-4800, DDR4-3200 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 76.805 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Core i9-12900KF and EPYC 9555.
| PCIe version | 5.0 and 4.0 | 5.0 |
| PCI Express lanes | 20 | 128 |
Pros & cons summary
| Recency | 4 November 2021 | 10 October 2024 |
| Physical cores | 16 | 64 |
| Threads | 24 | 128 |
| Power consumption (TDP) | 125 Watt | 360 Watt |
i9-12900KF has 188% lower power consumption.
EPYC 9555, on the other hand, has an age advantage of 2 years, and 300% more physical cores and 433.3% more threads.
We couldn't decide between Core i9-12900KF and EPYC 9555. We've got no test results to judge.
Note that Core i9-12900KF is a desktop processor while EPYC 9555 is a server/workstation one.
Should you still have questions on choice between Core i9-12900KF and EPYC 9555, ask them in Comments section, and we shall answer.
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