EPYC 7351 vs Ryzen 7 7840S
EPYC 7351
Ryzen 7 7840S
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar EPYC 7351
Performance Per Dollar Ryzen 7 7840S
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 7351 | Ryzen 7 7840S |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Naples (2017−2018) / 14 nm) | ✨ Modern (Phoenix-HS (Zen 4) (2023) / 4 nm) |
💎 Value Proposition
| Insight | EPYC 7351 | Ryzen 7 7840S |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of EPYC 7351 and Ryzen 7 7840S
EPYC 7351
The EPYC 7351 is manufactured by AMD. It was released in 29 June 2017 (8 years ago). It is based on the Naples (2017−2018) architecture. It features 16 cores and 32 threads. Base frequency is 2.4 GHz, with boost up to 2.9 GHz. L3 cache: 64 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: TR4. Thermal design power (TDP): 170 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 23,226 points. Launch price was $1,100.
Ryzen 7 7840S
The Ryzen 7 7840S is manufactured by AMD. It was released in 5 January 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP7r2/FP8. Thermal design power (TDP): 8 MB + 16 MB. Memory support: DDR5. Passmark benchmark score: 23,290 points. Launch price was $299.
Processing Power
The EPYC 7351 packs 16 cores / 32 threads, while the Ryzen 7 7840S offers 8 cores / 16 threads — the EPYC 7351 has 8 more cores. Boost clocks reach 2.9 GHz on the EPYC 7351 versus 5.1 GHz on the Ryzen 7 7840S — a 55% clock advantage for the Ryzen 7 7840S (base: 2.4 GHz vs 3.8 GHz). The EPYC 7351 uses the Naples (2017−2018) architecture (14 nm), while the Ryzen 7 7840S uses Phoenix-HS (Zen 4) (2023) (4 nm). In PassMark, the EPYC 7351 scores 23,226 against the Ryzen 7 7840S's 23,290 — a 0.3% lead for the Ryzen 7 7840S. L3 cache: 64 MB (total) on the EPYC 7351 vs 16 MB on the Ryzen 7 7840S.
| Feature | EPYC 7351 | Ryzen 7 7840S |
|---|---|---|
| Cores / Threads | 16 / 32+100% | 8 / 16 |
| Boost Clock | 2.9 GHz | 5.1 GHz+76% |
| Base Clock | 2.4 GHz | 3.8 GHz+58% |
| L3 Cache | 64 MB (total)+300% | 16 MB |
| L2 Cache | 512K (per core) | 8 MB+1500% |
| Process | 14 nm | 4 nm-71% |
| Architecture | Naples (2017−2018) | Phoenix-HS (Zen 4) (2023) |
| PassMark | 23,226 | 23,290 |
| Cinebench R23 Multi | — | 13,500 |
| Geekbench 6 Single | — | 2,570 |
| Geekbench 6 Multi | — | 13,535 |
Memory & Platform
The EPYC 7351 uses the TR4 socket (PCIe 4.0), while the Ryzen 7 7840S uses FP7/FP7r2/FP8 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | EPYC 7351 | Ryzen 7 7840S |
|---|---|---|
| Socket | TR4 | FP7/FP7r2/FP8 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | — | DDR5-5600, LPDDR5x-7500 |
| Max RAM Capacity | — | 256 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 20 |
Advanced Features
Virtualization: not specified (EPYC 7351) / AMD-V (SVM) (Ryzen 7 7840S). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the EPYC 7351 requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.
| Feature | EPYC 7351 | Ryzen 7 7840S |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Radeon 780M |
| Unlocked | — | No |
| AVX-512 | — | Yes |
| Virtualization | — | AMD-V (SVM) |
| Target Use | — | Gaming |
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