EPYC 8124PN vs EPYC 7742
Primary details
Comparing EPYC 7742 and EPYC 8124PN processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 39 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 23.81 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Architecture codename | Zen 2 (2019−2020) | Siena |
| Release date | 7 August 2019 (4 years ago) | no data |
| Launch price (MSRP) | $6,950 | no data |
| Current price | $1696 (0.2x MSRP) | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7742 and EPYC 8124PN 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 | 64 (Tetrahexaconta-Core) | 16 (Hexadeca-Core) |
| Threads | 128 | 32 |
| Base clock speed | 2.25 GHz | 2 GHz |
| Boost clock speed | 3.4 GHz | 3 GHz |
| L1 cache | 96K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 64 MB (shared) |
| Chip lithography | 7 nm, 14 nm | 5 nm |
| Die size | 192 mm2 | 2x 73 mm2 |
| Maximum case temperature (TCase) | no data | 85 °C |
| Number of transistors | 4,800 million | 17,750 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | Yes | No |
Compatibility
Information on EPYC 7742 and EPYC 8124PN 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 (Multiprocessor) | 1 |
| Socket | TR4 | SP6 |
| Power consumption (TDP) | 225 Watt | 100 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7742 and EPYC 8124PN. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7742 and EPYC 8124PN are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and EPYC 8124PN. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 204.763 GB/s | no data |
| ECC memory support | + | no data |
Peripherals
Specifications and connection of peripherals supported by EPYC 7742 and EPYC 8124PN.
| PCIe version | no data | 5.0 |
Pros & cons summary
| Physical cores | 64 | 16 |
| Threads | 128 | 32 |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 225 Watt | 100 Watt |
We couldn't decide between EPYC 7742 and EPYC 8124PN. We've got no test results to judge.
Should you still have questions on choice between EPYC 7742 and EPYC 8124PN, ask them in Comments section, and we shall answer.
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