EPYC 9755 vs FX-770K
Primary details
Comparing FX-770K and EPYC 9755 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1963 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 2.80 | no data |
| Architecture codename | Kaveri (2014−2015) | Turin (2024) |
| Release date | December 2014 (10 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $12,984 |
Detailed specifications
FX-770K 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 | 4 (Quad-Core) | 128 |
| Threads | 4 | 256 |
| Base clock speed | 3.5 GHz | 2.7 GHz |
| Boost clock speed | 3.9 GHz | 4.1 GHz |
| L1 cache | 256K | 80 KB (per core) |
| L2 cache | 4 MB | 1 MB (per core) |
| L3 cache | no data | 512 MB (shared) |
| Chip lithography | 28 nm | 4 nm |
| Die size | 245 mm2 | 16x 70.6 mm2 |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | 2,411 million | 133,040 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on FX-770K 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 | 2 |
| Socket | FM2+ | SP5 |
| Power consumption (TDP) | 65 Watt | 500 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by FX-770K and EPYC 9755. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by FX-770K and EPYC 9755 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by FX-770K and EPYC 9755. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-2133 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by FX-770K and EPYC 9755.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 16 | 128 |
Pros & cons summary
| Physical cores | 4 | 128 |
| Threads | 4 | 256 |
| Chip lithography | 28 nm | 4 nm |
| Power consumption (TDP) | 65 Watt | 500 Watt |
FX-770K has 669.2% lower power consumption.
EPYC 9755, on the other hand, has 3100% more physical cores and 6300% more threads, and a 600% more advanced lithography process.
We couldn't decide between FX-770K and EPYC 9755. We've got no test results to judge.
Note that FX-770K is a desktop processor while EPYC 9755 is a server/workstation one.
Should you still have questions on choice between FX-770K and EPYC 9755, ask them in Comments section, and we shall answer.
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