EPYC 9454P vs EPYC 7742
Aggregate performance score
EPYC 9454P outperforms EPYC 7742 by a substantial 38% based on our aggregate benchmark results.
Primary details
Comparing EPYC 7742 and EPYC 9454P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 40 | 13 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 22.90 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | AMD EPYC |
| Architecture codename | Zen 2 (2019−2020) | Genoa |
| Release date | 7 August 2019 (4 years ago) | 10 November 2022 (1 year ago) |
| Launch price (MSRP) | $6,950 | $4,598 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7742 and EPYC 9454P 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) | 48 (Octatetraconta-Core) |
| Threads | 128 | 96 |
| Base clock speed | 2.25 GHz | 2.75 GHz |
| Boost clock speed | 3.4 GHz | 2.75 GHz |
| L1 cache | 4 MB | 3 MB |
| L2 cache | 32 MB | 48 MB |
| L3 cache | 256 MB (shared) | 256 MB (shared) |
| Chip lithography | 7 nm, 14 nm | 5 nm, 6 nm |
| Die size | 192 mm2 | 8x 72 mm2 |
| Number of transistors | 4,800 million | 52,560 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | Yes | No |
Compatibility
Information on EPYC 7742 and EPYC 9454P 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 | SP5 |
| Power consumption (TDP) | 225 Watt | 290 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7742 and EPYC 9454P. 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 9454P are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7742 and EPYC 9454P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR5-4800 |
| Maximum memory size | 4 TiB | 6 TiB |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 204.763 GB/s | 460.8 GB/s |
| ECC memory support | + | no data |
Peripherals
Specifications and connection of peripherals supported by EPYC 7742 and EPYC 9454P.
| PCIe version | no data | 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. 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.
EPYC 9454P outperforms EPYC 7742 by 38% based on our aggregate benchmark results.
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.
Benchmark coverage: 65%
EPYC 9454P outperforms EPYC 7742 by 38% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 40%
EPYC 9454P outperforms EPYC 7742 by 61% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 40%
EPYC 9454P outperforms EPYC 7742 by 55% in GeekBench 5 Multi-Core.
Pros & cons summary
| Performance score | 45.02 | 62.00 |
| Recency | 7 August 2019 | 10 November 2022 |
| Physical cores | 64 | 48 |
| Threads | 128 | 96 |
| Chip lithography | 7 nm | 5 nm |
| Power consumption (TDP) | 225 Watt | 290 Watt |
EPYC 7742 has 33.3% more physical cores and 33.3% more threads, and 28.9% lower power consumption.
EPYC 9454P, on the other hand, has a 37.7% higher aggregate performance score, an age advantage of 3 years, and a 40% more advanced lithography process.
The EPYC 9454P is our recommended choice as it beats the EPYC 7742 in performance tests.
Should you still have questions on choice between EPYC 7742 and EPYC 9454P, ask them in Comments section, and we shall answer.
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