EPYC 7643
Ryzen 7 3700X
EPYC 7643 vs Ryzen 7 3700X Performance Spectrum
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.
EPYC 7643 vs Ryzen 7 3700X FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 7643 vs Ryzen 7 3700X: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 7643
2021Why buy it
- ✅+239.1% higher PassMark.
- ✅+700% larger total L3 cache (256 MB vs 32 MB).
- ✅Better for workstations and heavier parallel workloads: 48 cores / 96 threads, plus 128 PCIe lanes vs 24.
- ✅433.3% more PCIe lanes (128 vs 24) for storage and expansion-heavy builds.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 7 3700X across 50 shared CPU benchmark tests.
- ❌Lower PassMark per dollar, at 15.2 vs 68.2 PassMark/$ ($4,995 MSRP vs $329 MSRP).
- ❌246.2% higher power demand at 225W vs 65W.
Ryzen 7 3700X
2019Why buy it
- ✅Better for gaming: +18.1% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $4,666 less on MSRP ($329 MSRP vs $4,995 MSRP).
- ✅Delivers 347.8% more PassMark for each dollar spent, at 68.2 vs 15.2 PassMark/$ ($329 MSRP vs $4,995 MSRP).
- ✅Draws 65W instead of 225W, a 160W reduction.
Trade-offs
- ❌Lower PassMark (22,430 vs 76,050).
- ❌Smaller total L3 cache (32 MB vs 256 MB).
- ❌Less compelling for workstation-style loads than EPYC 7643, which brings 48 cores / 96 threads and 128 PCIe lanes.
Quick Answers
So, is Ryzen 7 3700X better than EPYC 7643?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 7643 vs Ryzen 7 3700X Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 7643
The EPYC 7643 is manufactured by AMD. It was released in 15 March 2021 (4 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: DDR4-3200. Passmark benchmark score: 76,050 points. Launch price was $4,995.
Ryzen 7 3700X
The Ryzen 7 3700X is manufactured by AMD. It was released in 7 July 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.4 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 22,430 points. Launch price was $329.
Processing Power
The EPYC 7643 packs 48 cores / 96 threads, while the Ryzen 7 3700X offers 8 cores / 16 threads — the EPYC 7643 has 40 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 4.4 GHz on the Ryzen 7 3700X — a 20% clock advantage for the Ryzen 7 3700X (base: 2.3 GHz vs 3.6 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the Ryzen 7 3700X uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the EPYC 7643 scores 76,050 against the Ryzen 7 3700X's 22,430 — a 108.9% lead for the EPYC 7643. L3 cache: 256 MB (total) on the EPYC 7643 vs 32 MB on the Ryzen 7 3700X.
| Feature | EPYC 7643 | Ryzen 7 3700X |
|---|---|---|
| Cores / Threads | 48 / 96+500% | 8 / 16 |
| Boost Clock | 3.6 GHz | 4.4 GHz+22% |
| Base Clock | 2.3 GHz | 3.6 GHz+57% |
| L3 Cache | 256 MB (total)+700% | 32 MB |
| L2 Cache | 512 kB (per core) | 512K (per core) |
| Process | 7 nm+ | 7 nm, 12 nm |
| Architecture | Milan (2021−2023) | Matisse (Zen 2) (2019−2020) |
| PassMark | 76,050+239% | 22,430 |
| Geekbench 6 Single | 1,671 | — |
| Geekbench 6 Multi | 15,000 | — |
Memory & Platform
The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the Ryzen 7 3700X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The EPYC 7643 supports up to 4 TB of RAM compared to 128 GB — 3100% more capacity for professional workloads. Memory channels: 8 (EPYC 7643) vs 2 (Ryzen 7 3700X). PCIe lanes: 128 (EPYC 7643) vs 24 (Ryzen 7 3700X) — the EPYC 7643 offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 3700X).
| Feature | EPYC 7643 | Ryzen 7 3700X |
|---|---|---|
| Socket | SP3 | AM4 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | DDR4-3200 |
| Max RAM Capacity | 4 TB+3100% | 128 GB |
| RAM Channels | 8+300% | 2 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128+433% | 24 |
Advanced Features
Virtualization: AMD-V (EPYC 7643) / not specified (Ryzen 7 3700X). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P.
| Feature | EPYC 7643 | Ryzen 7 3700X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | — |
| Target Use | Server | — |
Value Analysis
At launch, the EPYC 7643 was priced at $4995, while the Ryzen 7 3700X came in at $329. On launch pricing ($4995 vs $329), Ryzen 7 3700X was $4666 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 68.2 pts/$ for the Ryzen 7 3700X — making the Ryzen 7 3700X the 127% better value option.
| Feature | EPYC 7643 | Ryzen 7 3700X |
|---|---|---|
| MSRP | $4995 | $329-93% |
| Performance per Dollar | 15.2 | 68.2+349% |
| Release Date | 2021 | 2019 |
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