EPYC 7643P
EPYC 7663
EPYC 7643P vs EPYC 7663 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 7643P vs EPYC 7663 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 7643P vs EPYC 7663: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 7643P
2023Why buy it
- ✅Better for gaming: +3.4% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $3,644 less on MSRP ($2,722 MSRP vs $6,366 MSRP).
- ✅Delivers 120.2% more PassMark for each dollar spent, at 28.4 vs 12.9 PassMark/$ ($2,722 MSRP vs $6,366 MSRP).
- ✅Draws 225W instead of 240W, a 15W reduction.
Trade-offs
- ❌Lower PassMark (77,307 vs 82,120).
EPYC 7663
2021Why buy it
- ✅+6.2% higher PassMark.
Trade-offs
- ❌Worse for gaming: lower average FPS than EPYC 7643P across 50 shared CPU benchmark tests.
- ❌Lower PassMark per dollar, at 12.9 vs 28.4 PassMark/$ ($6,366 MSRP vs $2,722 MSRP).
Quick Answers
So, is EPYC 7643P better than EPYC 7663?
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 7643P vs EPYC 7663 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
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.
EPYC 7663
The EPYC 7663 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 56 cores and 112 threads. Base frequency is 2 GHz, with boost up to 3.5 GHz. L3 cache: 256 MB (total). L2 cache: 512 kB (per core). Built on 7 nm+ process technology. Socket: SP3. Thermal design power (TDP): 240 Watt. Memory support: DDR4-3200. Passmark benchmark score: 82,120 points. Launch price was $6,366.
Processing Power
The EPYC 7643P packs 48 cores / 96 threads, while the EPYC 7663 offers 56 cores / 112 threads — the EPYC 7663 has 8 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643P versus 3.5 GHz on the EPYC 7663 — a 2.8% clock advantage for the EPYC 7643P (base: 2.3 GHz vs 2 GHz). Both are built on the Milan (2021−2023) architecture using a 7 nm process. In PassMark, the EPYC 7643P scores 77,307 against the EPYC 7663's 82,120 — a 6% lead for the EPYC 7663. Both processors carry 256 MB (total) of L3 cache.
| Feature | EPYC 7643P | EPYC 7663 |
|---|---|---|
| Cores / Threads | 48 / 96 | 56 / 112+17% |
| Boost Clock | 3.6 GHz+3% | 3.5 GHz |
| Base Clock | 2.3 GHz+15% | 2 GHz |
| L3 Cache | 256 MB (total) | 256 MB (total) |
| L2 Cache | 512 kB (per core) | 512 kB (per core) |
| Process | 7 nm | 7 nm+ |
| Architecture | Milan (2021−2023) | Milan (2021−2023) |
| PassMark | 77,307 | 82,120+6% |
| Geekbench 6 Single | — | 1,370 |
| Geekbench 6 Multi | — | 12,380 |
Memory & Platform
Both processors use the SP3 socket with PCIe 4.0. Both support up to 3200 memory speed. Both support up to 4096 GB of RAM. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7643P) and SP3 (EPYC 7663).
| Feature | EPYC 7643P | EPYC 7663 |
|---|---|---|
| Socket | SP3 | SP3 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | 3200 | DDR4-3200 |
| Max RAM Capacity | 4096 GB | 4096 GB |
| RAM Channels | 8 | 8 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128 | 128 |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x, VT-d, SEV (EPYC 7643P) vs AMD-V (EPYC 7663). Primary use case: EPYC 7663 targets Server. Direct competitor: EPYC 7643P rivals Xeon Platinum 8380; EPYC 7663 rivals Xeon Platinum 8380.
| Feature | EPYC 7643P | EPYC 7663 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d, SEV | AMD-V |
| Target Use | — | Server |
Value Analysis
At launch, the EPYC 7643P was priced at $2722, while the EPYC 7663 came in at $6366. On launch pricing ($2722 vs $6366), EPYC 7643P was $3644 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643P delivers 28.4 pts/$ vs 12.9 pts/$ for the EPYC 7663 — making the EPYC 7643P the 75.1% better value option.
| Feature | EPYC 7643P | EPYC 7663 |
|---|---|---|
| MSRP | $2722-57% | $6366 |
| Performance per Dollar | 28.4+120% | 12.9 |
| Release Date | 2023 | 2021 |
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