EPYC 9755 vs Phenom X3 8400
Primary details
Comparing Phenom X3 8400 and EPYC 9755 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2670 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | 0.73 | no data |
| Architecture codename | Toliman (2008) | Turin (2024) |
| Release date | March 2008 (16 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $12,984 |
Detailed specifications
Phenom X3 8400 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 | 3 (Tri-Core) | 128 |
| Threads | 3 | 256 |
| Base clock speed | no data | 2.7 GHz |
| Boost clock speed | 2.1 GHz | 4.1 GHz |
| L1 cache | 128 KB (per core) | 80 KB (per core) |
| L2 cache | 512 KB (per core) | 1 MB (per core) |
| L3 cache | 2 MB (shared) | 512 MB (shared) |
| Chip lithography | 65 nm | 4 nm |
| Die size | 285 mm2 | 16x 70.6 mm2 |
| Number of transistors | 450 million | 133,040 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Phenom X3 8400 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 | AM2+ | SP5 |
| Power consumption (TDP) | 95 Watt | 500 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom X3 8400 and EPYC 9755. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom X3 8400 and EPYC 9755 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom X3 8400 and EPYC 9755. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | 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 Phenom X3 8400 and EPYC 9755.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Physical cores | 3 | 128 |
| Threads | 3 | 256 |
| Chip lithography | 65 nm | 4 nm |
| Power consumption (TDP) | 95 Watt | 500 Watt |
Phenom X3 8400 has 426.3% lower power consumption.
EPYC 9755, on the other hand, has 4166.7% more physical cores and 8433.3% more threads, and a 1525% more advanced lithography process.
We couldn't decide between Phenom X3 8400 and EPYC 9755. We've got no test results to judge.
Note that Phenom X3 8400 is a desktop processor while EPYC 9755 is a server/workstation one.
Should you still have questions on choice between Phenom X3 8400 and EPYC 9755, ask them in Comments section, and we shall answer.
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