EPYC 7643 vs Core i7-9700K
EPYC 7643
Core i7-9700K
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 7643
Performance Per Dollar Core i7-9700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 7643 | Core i7-9700K |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($2,750) | ✅ More affordable ($200) |
| Longevity | ✨ Modern (Milan (2021−2023) / 7 nm+) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | EPYC 7643 | Core i7-9700K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+160%) |
| Upfront Cost | ⚠️ Higher cost ($2,750) | ✅ More affordable ($200) |
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 7643 and Core i7-9700K
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.
Core i7-9700K
The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.
Processing Power
The EPYC 7643 packs 48 cores / 96 threads, while the Core i7-9700K offers 8 cores / 8 threads — the EPYC 7643 has 40 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 4.9 GHz on the Core i7-9700K — a 30.6% clock advantage for the Core i7-9700K (base: 2.3 GHz vs 3.6 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the EPYC 7643 scores 76,050 against the Core i7-9700K's 14,397 — a 136.3% lead for the EPYC 7643. L3 cache: 256 MB (total) on the EPYC 7643 vs 12 MB (total) on the Core i7-9700K.
| Feature | EPYC 7643 | Core i7-9700K |
|---|---|---|
| Cores / Threads | 48 / 96+500% | 8 / 8 |
| Boost Clock | 3.6 GHz | 4.9 GHz+36% |
| Base Clock | 2.3 GHz | 3.6 GHz+57% |
| L3 Cache | 256 MB (total)+2033% | 12 MB (total) |
| L2 Cache | 512 kB (per core)+100% | 256K (per core) |
| Process | 7 nm+-50% | 14 nm |
| Architecture | Milan (2021−2023) | Coffee Lake-R (2018−2019) |
| PassMark | 76,050+428% | 14,397 |
| Geekbench 6 Single | 1,671 | — |
| Geekbench 6 Multi | 15,000 | — |
Memory & Platform
The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Core i7-9700K supports up to 128 GB of RAM compared to 4 TB — 187.9% more capacity for professional workloads. Memory channels: 8 (EPYC 7643) vs 2 (Core i7-9700K). PCIe lanes: 128 (EPYC 7643) vs 16 (Core i7-9700K) — the EPYC 7643 offers 112 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643) and Intel 300 series (Core i7-9700K).
| Feature | EPYC 7643 | Core i7-9700K |
|---|---|---|
| Socket | SP3 | LGA1151 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | DDR4-3200 | DDR4-2666 |
| Max RAM Capacity | 4 TB+3100% | 128 GB |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 128+700% | 16 |
Advanced Features
Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d (Core i7-9700K). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the EPYC 7643 requires a dedicated GPU. Primary use case: EPYC 7643 targets Server, Core i7-9700K targets Desktop. Direct competitor: EPYC 7643 rivals EPYC 7443P.
| Feature | EPYC 7643 | Core i7-9700K |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | UHD Graphics 630 |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | AMD-V | VT-x, VT-d |
| Target Use | Server | Desktop |
Value Analysis
The EPYC 7643 launched at $4995 MSRP, while the Core i7-9700K debuted at $385. At current prices ($2750 vs $200), the Core i7-9700K is $2550 cheaper. In terms of value (PassMark points per dollar), the EPYC 7643 delivers 27.7 pts/$ vs 72.0 pts/$ for the Core i7-9700K — making the Core i7-9700K the 89% better value option.
| Feature | EPYC 7643 | Core i7-9700K |
|---|---|---|
| MSRP | $4995 | $385-92% |
| Avg Price (30d) | $2750 | $200-93% |
| Performance per Dollar | 27.7 | 72.0+160% |
| Release Date | 2021 | 2018 |
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