EPYC 9555 vs A4 Micro-6400T
Aggregate performance score
EPYC 9555 outperforms A4 Micro-6400T by a whopping 12131% based on our aggregate benchmark results.
Primary details
Comparing A4 Micro-6400T and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2786 | 6 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 3.05 |
| Market segment | Laptop | Server |
| Series | AMD A-Series | no data |
| Power efficiency | 14.39 | 22.00 |
| Architecture codename | Mullins (2014) | Turin (2024) |
| Release date | 29 April 2014 (10 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $9,826 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
A4 Micro-6400T 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 | 4 (Quad-Core) | 64 (Tetrahexaconta-Core) |
| Threads | 4 | 128 |
| Base clock speed | 1 GHz | 3.2 GHz |
| Boost clock speed | 1.6 GHz | 4.4 GHz |
| L1 cache | no data | 80 KB (per core) |
| L2 cache | 2048 KB | 1 MB (per core) |
| L3 cache | no data | 256 MB (shared) |
| Chip lithography | 28 nm | 4 nm |
| Die size | no data | 8x 70.6 mm2 |
| Number of transistors | no data | 66,520 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on A4 Micro-6400T 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 | FT3b | SP5 |
| Power consumption (TDP) | 4.5 Watt | 360 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A4 Micro-6400T and EPYC 9555. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX | no data |
| AES-NI | + | + |
| FMA | FMA4 | - |
| AVX | + | + |
| PowerNow | + | - |
| PowerGating | + | - |
| VirusProtect | + | - |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A4 Micro-6400T and EPYC 9555 are enumerated here.
| AMD-V | + | + |
| IOMMU 2.0 | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A4 Micro-6400T and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1333 | DDR5 |
| Max memory channels | 1 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon R3 Graphics | N/A |
| Enduro | + | - |
| Switchable graphics | + | - |
| UVD | + | - |
| VCE | + | - |
Graphics interfaces
Available interfaces and connections of A4 Micro-6400T and EPYC 9555 integrated GPUs.
| DisplayPort | + | - |
| HDMI | + | - |
Graphics API support
APIs supported by A4 Micro-6400T and EPYC 9555 integrated GPUs, sometimes API versions are included.
| DirectX | DirectX® 12 | no data |
| Vulkan | + | - |
Peripherals
Specifications and connection of peripherals supported by A4 Micro-6400T and EPYC 9555.
| PCIe version | 2.0 | 5.0 |
| PCI Express lanes | no data | 128 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 0.68 | 83.17 |
| Recency | 29 April 2014 | 10 October 2024 |
| Physical cores | 4 | 64 |
| Threads | 4 | 128 |
| Chip lithography | 28 nm | 4 nm |
| Power consumption (TDP) | 4 Watt | 360 Watt |
A4 Micro-6400T has 8900% lower power consumption.
EPYC 9555, on the other hand, has a 12130.9% higher aggregate performance score, an age advantage of 10 years, 1500% more physical cores and 3100% more threads, and a 600% more advanced lithography process.
The EPYC 9555 is our recommended choice as it beats the A4 Micro-6400T in performance tests.
Be aware that A4 Micro-6400T is a notebook processor while EPYC 9555 is a server/workstation one.
Other comparisons
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