EPYC 9555 vs AMD-K6-III/400AHX
Primary details
Comparing AMD-K6-III/400AHX and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Series | AMD K6-III | no data |
| Architecture codename | K6-III (1999−2000) | Turin (2024) |
| Release date | 26 February 1999 (25 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $9,826 |
Detailed specifications
AMD-K6-III/400AHX 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 | 1 (Single-Core) | 64 (Tetrahexaconta-Core) |
| Threads | 1 | 128 |
| Base clock speed | no data | 3.2 GHz |
| Boost clock speed | 0.1 GHz | 4.4 GHz |
| Bus type | FSB | no data |
| Bus rate | 99.99 MT/s | no data |
| Multiplier | 4 | no data |
| L1 cache | no data | 80 KB (per core) |
| L2 cache | 256 KB | 1 MB (per core) |
| L3 cache | no data | 256 MB (shared) |
| Chip lithography | 0.25 µm | 4 nm |
| Die size | 118 mm2 | 8x 70.6 mm2 |
| Number of transistors | 21 Million | 66,520 million |
| 64 bit support | - | + |
Compatibility
Information on AMD-K6-III/400AHX 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 | no data | 2 |
| Socket | no data | SP5 |
| Power consumption (TDP) | no data | 360 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by AMD-K6-III/400AHX and EPYC 9555. 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 AMD-K6-III/400AHX and EPYC 9555 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by AMD-K6-III/400AHX and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5 |
| Maximum memory size | 4 GB | 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 AMD-K6-III/400AHX and EPYC 9555.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 26 February 1999 | 10 October 2024 |
| Physical cores | 1 | 64 |
| Threads | 1 | 128 |
EPYC 9555 has an age advantage of 25 years, and 6300% more physical cores and 12700% more threads.
We couldn't decide between AMD-K6-III/400AHX and EPYC 9555. We've got no test results to judge.
Note that AMD-K6-III/400AHX is a desktop processor while EPYC 9555 is a server/workstation one.
Should you still have questions on choice between AMD-K6-III/400AHX and EPYC 9555, ask them in Comments section, and we shall answer.
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