AMD EPYC 7742 vs AMD EPYC 7351
Comparative analysis of AMD EPYC 7742 and AMD EPYC 7351 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.
Differences
Reasons to consider the AMD EPYC 7742
- CPU is newer: launch date 2 year(s) 2 month(s) later
- 48 more cores, run more applications at once: 64 vs 16
- 96 more threads: 128 vs 32
- Around 17% higher clock speed: 3.4 GHz vs 2.9 GHz
- A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm, 14 nm vs 14 nm
- 2.7x more L1 cache, more data can be stored in the L1 cache for quick access later
- 4x more L2 cache, more data can be stored in the L2 cache for quick access later
- 4x more L3 cache, more data can be stored in the L3 cache for quick access later
- Around 17% better performance in PassMark - Single thread mark: 2046 vs 1747
- 3.7x better performance in PassMark - CPU mark: 94081 vs 25431
| Specifications (specs) | |
| Launch date | 7 Aug 2019 vs June 2017 |
| Number of cores | 64 vs 16 |
| Number of threads | 128 vs 32 |
| Maximum frequency | 3.4 GHz vs 2.9 GHz |
| Manufacturing process technology | 7 nm, 14 nm vs 14 nm |
| L1 cache | 4 MB vs 96 KB (per core) |
| L2 cache | 32 MB vs 512 KB (per core) |
| L3 cache | 256 MB vs 64 MB |
| Benchmarks | |
| PassMark - Single thread mark | 2046 vs 1747 |
| PassMark - CPU mark | 94081 vs 25431 |
Reasons to consider the AMD EPYC 7351
- Processor is unlocked, an unlocked multiplier allows for easier overclocking
- Around 32% lower typical power consumption: 155/170 Watt vs 225 Watt
| Unlocked | Unlocked vs Locked |
| Thermal Design Power (TDP) | 155/170 Watt vs 225 Watt |
Compare benchmarks
CPU 1: AMD EPYC 7742
CPU 2: AMD EPYC 7351
| PassMark - Single thread mark |
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| PassMark - CPU mark |
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| Name | AMD EPYC 7742 | AMD EPYC 7351 |
|---|---|---|
| PassMark - Single thread mark | 2046 | 1747 |
| PassMark - CPU mark | 94081 | 25431 |
| Geekbench 4 - Single Core | 3547 | |
| Geekbench 4 - Multi-Core | 23587 |
Compare specifications (specs)
| AMD EPYC 7742 | AMD EPYC 7351 | |
|---|---|---|
Essentials |
||
| Architecture codename | Zen 2 | Zen |
| Launch date | 7 Aug 2019 | June 2017 |
| Place in performance rating | 216 | 248 |
| Vertical segment | Server | Server |
| Family | AMD EPYC | |
| Series | AMD EPYC 7000 Series | |
Performance |
||
| Base frequency | 2.25 GHz | 2.4 GHz |
| L1 cache | 4 MB | 96 KB (per core) |
| L2 cache | 32 MB | 512 KB (per core) |
| L3 cache | 256 MB | 64 MB |
| Manufacturing process technology | 7 nm, 14 nm | 14 nm |
| Maximum frequency | 3.4 GHz | 2.9 GHz |
| Number of cores | 64 | 16 |
| Number of threads | 128 | 32 |
| Unlocked | ||
| 64 bit support | ||
| Die size | 192 mm | |
| Transistor count | 4800 million | |
Memory |
||
| ECC memory support | ||
| Max memory channels | 8 | 8 |
| Maximum memory bandwidth | 190.7 GB/s | 307/341 GB/s |
| Maximum memory size | 4 TB | |
| Supported memory types | DDR4-3200 | DDR4 |
| Supported memory frequency | 2400/2666 MHz | |
Compatibility |
||
| Max number of CPUs in a configuration | 2 | 2 |
| Sockets supported | SP3 | TR4 |
| Thermal Design Power (TDP) | 225 Watt | 155/170 Watt |
| Socket Count | 1P/2P | |
Peripherals |
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| Max number of PCIe lanes | 128 | |
| PCI Express revision | 4.0 | x128 |
| PCIe configurations | x16, x8 | |
Advanced Technologies |
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| AMD SenseMI | ||
| Fused Multiply-Add 3 (FMA3) | ||
| Intel® Advanced Vector Extensions (AVX) | ||
| Intel® Advanced Vector Extensions 2 (AVX2) | ||
| Intel® AES New Instructions | ||
Virtualization |
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| AMD Virtualization (AMD-V™) | ||
