EPYC 9755 vs i9-9900KF
Primary details
Comparing Core i9-9900KF and EPYC 9755 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 686 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 8.50 | no data |
| Market segment | Desktop processor | Server |
| Series | Intel Core i9 | no data |
| Power efficiency | 11.38 | no data |
| Architecture codename | Coffee Lake-R (2018−2019) | Turin (2024) |
| Release date | 8 January 2019 (5 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | $488 | $12,984 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-9900KF and EPYC 9755 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) | 128 |
| Threads | 16 | 256 |
| Base clock speed | 3.6 GHz | 2.7 GHz |
| Boost clock speed | 5 GHz | 4.1 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 64K (per core) | 80 KB (per core) |
| L2 cache | 256K (per core) | 1 MB (per core) |
| L3 cache | 16 MB (shared) | 512 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | no data | 16x 70.6 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 133,040 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-9900KF and EPYC 9755 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) | 2 |
| Socket | FCLGA1151 | SP5 |
| Power consumption (TDP) | 95 Watt | 500 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9900KF and EPYC 9755. 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 | + | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Precision Boost 2 | no data | + |
Security technologies
Core i9-9900KF and EPYC 9755 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| MPX | + | - |
| Identity Protection | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-9900KF and EPYC 9755 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 i9-9900KF and EPYC 9755. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 42.671 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 i9-9900KF and EPYC 9755.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 16 | 128 |
Pros & cons summary
| Recency | 8 January 2019 | 10 October 2024 |
| Physical cores | 8 | 128 |
| Threads | 16 | 256 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 95 Watt | 500 Watt |
i9-9900KF has 426.3% lower power consumption.
EPYC 9755, on the other hand, has an age advantage of 5 years, 1500% more physical cores and 1500% more threads, and a 250% more advanced lithography process.
We couldn't decide between Core i9-9900KF and EPYC 9755. We've got no test results to judge.
Note that Core i9-9900KF is a desktop processor while EPYC 9755 is a server/workstation one.
Should you still have questions on choice between Core i9-9900KF and EPYC 9755, ask them in Comments section, and we shall answer.
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