EPYC 4124P vs EPYC 7643
Aggregate performance score
EPYC 7643 outperforms EPYC 4124P by a whopping 308% based on our aggregate benchmark results.
Primary details
Comparing EPYC 7643 and EPYC 4124P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 38 | 656 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 6.32 | 49.83 |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 20.14 | 17.09 |
| Architecture codename | Milan (2021−2023) | Raphael (2023−2024) |
| Release date | 12 January 2021 (3 years ago) | 21 May 2024 (less than a year ago) |
| Launch price (MSRP) | $4,995 | $149 |
Cost-effectiveness evaluation
Performance per price, higher is better.
EPYC 4124P has 688% better value for money than EPYC 7643.
Detailed specifications
EPYC 7643 and EPYC 4124P 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 | 48 (Octatetraconta-Core) | 4 (Quad-Core) |
| Threads | 96 | 8 |
| Base clock speed | 2.3 GHz | 3.8 GHz |
| Boost clock speed | 3.6 GHz | 5.1 GHz |
| Multiplier | 23 | no data |
| L1 cache | 3 MB | 64 KB (per core) |
| L2 cache | 24 MB | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 32 MB (shared) |
| Chip lithography | 7 nm+ | 5 nm |
| Die size | 8x 81 mm2 | 71 mm2 |
| Maximum case temperature (TCase) | no data | 61 °C |
| Number of transistors | 33,200 million | 6,570 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
Compatibility
Information on EPYC 7643 and EPYC 4124P 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 | 2 | 1 |
| Socket | SP3 | AM5 |
| Power consumption (TDP) | 225 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7643 and EPYC 4124P. 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 EPYC 7643 and EPYC 4124P are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7643 and EPYC 4124P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Maximum memory bandwidth | 204.795 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by EPYC 7643 and EPYC 4124P.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 28 |
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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 | 49.69 | 12.18 |
| Recency | 12 January 2021 | 21 May 2024 |
| Physical cores | 48 | 4 |
| Threads | 96 | 8 |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 225 Watt | 65 Watt |
EPYC 7643 has a 308% higher aggregate performance score, and 1100% more physical cores and 1100% more threads.
EPYC 4124P, on the other hand, has an age advantage of 3 years, a 40% more advanced lithography process, and 246.2% lower power consumption.
The EPYC 7643 is our recommended choice as it beats the EPYC 4124P in performance tests.
Should you still have questions on choice between EPYC 7643 and EPYC 4124P, ask them in Comments section, and we shall answer.
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