Ryzen 7 5800X vs EPYC 7643P
Ryzen 7 5800X
EPYC 7643P
Popular choices:
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 Ryzen 7 5800X
Performance Per Dollar EPYC 7643P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($180) | ⚠️ Higher cost ($2,722) |
| Longevity | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) | ✨ Modern (Milan (2021−2023) / 7 nm) |
💎 Value Proposition
| Insight | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+442%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($180) | ⚠️ Higher cost ($2,722) |
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 Ryzen 7 5800X and EPYC 7643P
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.
EPYC 7643P
The EPYC 7643P is manufactured by AMD. It was released in 5 September 2023 (2 years ago). It is based on the Milan (2021−2023) architecture. It features 48 cores and 96 threads. Base frequency is 2.3 GHz, with boost up to 3.6 GHz. L3 cache: 256 MB (total). L2 cache: 512 kB (per core). Built on 7 nm process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4. Passmark benchmark score: 77,307 points. Launch price was $2,722.
Processing Power
The Ryzen 7 5800X packs 8 cores / 16 threads, while the EPYC 7643P offers 48 cores / 96 threads — the EPYC 7643P has 40 more cores. Boost clocks reach 4.7 GHz on the Ryzen 7 5800X versus 3.6 GHz on the EPYC 7643P — a 26.5% clock advantage for the Ryzen 7 5800X (base: 3.8 GHz vs 2.3 GHz). The Ryzen 7 5800X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm, 12 nm), while the EPYC 7643P uses Milan (2021−2023) (7 nm). In PassMark, the Ryzen 7 5800X scores 27,712 against the EPYC 7643P's 77,307 — a 94.4% lead for the EPYC 7643P. L3 cache: 32 MB on the Ryzen 7 5800X vs 256 MB (total) on the EPYC 7643P.
| Feature | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| Cores / Threads | 8 / 16 | 48 / 96+500% |
| Boost Clock | 4.7 GHz+31% | 3.6 GHz |
| Base Clock | 3.8 GHz+65% | 2.3 GHz |
| L3 Cache | 32 MB | 256 MB (total)+700% |
| L2 Cache | 512K (per core) | 512 kB (per core) |
| Process | 7 nm, 12 nm | 7 nm |
| Architecture | Vermeer (Zen 3) (2020−2022) | Milan (2021−2023) |
| PassMark | 27,712 | 77,307+179% |
Memory & Platform
The Ryzen 7 5800X uses the AM4 socket (PCIe 4.0), while the EPYC 7643P uses SP3 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 7 5800X versus 3200 on the EPYC 7643P — the EPYC 7643P supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7643P supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 2 (Ryzen 7 5800X) vs 8 (EPYC 7643P). PCIe lanes: 24 (Ryzen 7 5800X) vs 128 (EPYC 7643P) — the EPYC 7643P offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X) and SP3 (EPYC 7643P).
| Feature | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| Socket | AM4 | SP3 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | 3200+79900% |
| Max RAM Capacity | 128 GB+3276700% | 4096 |
| RAM Channels | 2 | 8+300% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 128+433% |
Advanced Features
Only the Ryzen 7 5800X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (Ryzen 7 5800X) vs VT-x, VT-d, SEV (EPYC 7643P). Primary use case: Ryzen 7 5800X targets Desktop. Direct competitor: EPYC 7643P rivals Xeon Platinum 8380.
| Feature | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | AMD-V | VT-x, VT-d, SEV |
| Target Use | Desktop | — |
Value Analysis
The Ryzen 7 5800X launched at $449 MSRP, while the EPYC 7643P debuted at $2722. At current prices ($180 vs $2722), the Ryzen 7 5800X is $2542 cheaper. In terms of value (PassMark points per dollar), the Ryzen 7 5800X delivers 154.0 pts/$ vs 28.4 pts/$ for the EPYC 7643P — making the Ryzen 7 5800X the 137.7% better value option.
| Feature | Ryzen 7 5800X | EPYC 7643P |
|---|---|---|
| MSRP | $449-84% | $2722 |
| Avg Price (30d) | $180-93% | $2722 |
| Performance per Dollar | 154.0+442% | 28.4 |
| Release Date | 2020 | 2023 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Ryzen 7 5800X and EPYC 7643P
