EPYC 7643
EPYC 7662
EPYC 7643 vs EPYC 7662 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 EPYC 7662 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 EPYC 7662: 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
- ✅Better for gaming: +5.3% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $1,155 less on MSRP ($4,995 MSRP vs $6,150 MSRP).
- ✅Delivers 29.5% more PassMark for each dollar spent, at 15.2 vs 11.8 PassMark/$ ($4,995 MSRP vs $6,150 MSRP).
Trade-offs
- ❌Fewer obvious downsides in this matchup outside of normal market pricing swings.
EPYC 7662
2020Why buy it
Trade-offs
- ❌Worse for gaming: lower average FPS than EPYC 7643 across 50 shared CPU benchmark tests.
- ❌Lower PassMark (72,298 vs 76,050).
- ❌Lower PassMark per dollar, at 11.8 vs 15.2 PassMark/$ ($6,150 MSRP vs $4,995 MSRP).
Quick Answers
So, is EPYC 7643 better than EPYC 7662?
Which one is better for gaming?
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 EPYC 7662 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.
EPYC 7662
The EPYC 7662 is manufactured by AMD. It was released in 2020-02-19. It is based on the Zen 2 (2017−2020) architecture. It features 64 cores and 128 threads. Base frequency is 2 GHz, with boost up to 3.3 GHz. L3 cache: 256 MB. L2 cache: 32 MB. Built on 7 nm, 14 nm process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4-3200. Passmark benchmark score: 72,298 points. Launch price was $6,700.
Processing Power
The EPYC 7643 packs 48 cores / 96 threads, while the EPYC 7662 offers 64 cores / 128 threads — the EPYC 7662 has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 3.3 GHz on the EPYC 7662 — a 8.7% clock advantage for the EPYC 7643 (base: 2.3 GHz vs 2 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the EPYC 7662 uses Zen 2 (2017−2020) (7 nm, 14 nm). In PassMark, the EPYC 7643 scores 76,050 against the EPYC 7662's 72,298 — a 5.1% lead for the EPYC 7643. L3 cache: 256 MB (total) on the EPYC 7643 vs 256 MB on the EPYC 7662.
| Feature | EPYC 7643 | EPYC 7662 |
|---|---|---|
| Cores / Threads | 48 / 96 | 64 / 128+33% |
| Boost Clock | 3.6 GHz+9% | 3.3 GHz |
| Base Clock | 2.3 GHz+15% | 2 GHz |
| L3 Cache | 256 MB (total) | 256 MB |
| L2 Cache | 512 kB (per core) | 32 MB+6300% |
| Process | 7 nm+ | 7 nm, 14 nm |
| Architecture | Milan (2021−2023) | Zen 2 (2017−2020) |
| PassMark | 76,050+5% | 72,298 |
| Geekbench 6 Single | 1,671 | — |
| Geekbench 6 Multi | 15,000 | — |
Memory & Platform
Both processors use the SP3 socket with PCIe 4.0. Both support up to DDR4-3200 memory speed. The EPYC 7662 supports up to 4096 TB of RAM compared to 4 TB — 102300% more capacity for professional workloads. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7643) and SP3 (EPYC 7662).
| Feature | EPYC 7643 | EPYC 7662 |
|---|---|---|
| Socket | SP3 | SP3 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | 3200 |
| Max RAM Capacity | 4 TB | 4096 TB+102300% |
| RAM Channels | 8 | 8 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128 | 128 |
Advanced Features
Neither processor supports overclocking. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d (EPYC 7662). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; EPYC 7662 rivals Xeon Platinum 8280.
| Feature | EPYC 7643 | EPYC 7662 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | AMD-V | VT-x, VT-d |
| Target Use | Server | — |
Value Analysis
At launch, the EPYC 7643 was priced at $4995, while the EPYC 7662 came in at $6150. On launch pricing ($4995 vs $6150), EPYC 7643 was $1155 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7643 delivers 15.2 pts/$ vs 11.8 pts/$ for the EPYC 7662 — making the EPYC 7643 the 25.7% better value option.
| Feature | EPYC 7643 | EPYC 7662 |
|---|---|---|
| MSRP | $4995-19% | $6150 |
| Performance per Dollar | 15.2+29% | 11.8 |
| Release Date | 2021 | 2020 |
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