EPYC 9684X vs EPYC 9555P
EPYC 9684X
EPYC 9555P
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 9684X
Performance Per Dollar EPYC 9555P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9684X | EPYC 9555P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($14,756) | ✅ More affordable ($6,130) |
| Longevity | ✨ Modern (Genoa-X (2023) / 5 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | EPYC 9684X | EPYC 9555P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+167%) |
| Upfront Cost | ⚠️ Higher cost ($14,756) | ✅ More affordable ($6,130) |
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 9684X and EPYC 9555P
EPYC 9684X
The EPYC 9684X is manufactured by AMD. It was released in 13 June 2023 (2 years ago). It is based on the Genoa-X (2023) architecture. It features 96 cores and 192 threads. Base frequency is 2.55 GHz, with boost up to 3.7 GHz. L3 cache: 1152 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: SP5. Thermal design power (TDP): 400 Watt. Memory support: DDR5. Passmark benchmark score: 122,017 points. Launch price was $14,756.
EPYC 9555P
The EPYC 9555P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 64 cores and 128 threads. Base frequency is 3.2 GHz, with boost up to 4.4 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 360 Watt. Memory support: DDR5. Passmark benchmark score: 135,441 points. Launch price was $7,983.
Processing Power
The EPYC 9684X packs 96 cores / 192 threads, while the EPYC 9555P offers 64 cores / 128 threads — the EPYC 9684X has 32 more cores. Boost clocks reach 3.7 GHz on the EPYC 9684X versus 4.4 GHz on the EPYC 9555P — a 17.3% clock advantage for the EPYC 9555P (base: 2.55 GHz vs 3.2 GHz). The EPYC 9684X uses the Genoa-X (2023) architecture (5 nm), while the EPYC 9555P uses Turin (2024) (4 nm). In PassMark, the EPYC 9684X scores 122,017 against the EPYC 9555P's 135,441 — a 10.4% lead for the EPYC 9555P. L3 cache: 1152 MB (total) on the EPYC 9684X vs 256 MB (total) on the EPYC 9555P.
| Feature | EPYC 9684X | EPYC 9555P |
|---|---|---|
| Cores / Threads | 96 / 192+50% | 64 / 128 |
| Boost Clock | 3.7 GHz | 4.4 GHz+19% |
| Base Clock | 2.55 GHz | 3.2 GHz+25% |
| L3 Cache | 1152 MB (total)+350% | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 5 nm | 4 nm-20% |
| Architecture | Genoa-X (2023) | Turin (2024) |
| PassMark | 122,017 | 135,441+11% |
| Geekbench 6 Single | — | 2,815 |
| Geekbench 6 Multi | — | 29,406 |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-4800 memory speed. Both support up to 6 TB of RAM. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9684X) and SP5 (EPYC 9555P).
| Feature | EPYC 9684X | EPYC 9555P |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-4800 | DDR5-6000 |
| Max RAM Capacity | 6 TB | 6 TB |
| RAM Channels | 12 | 12 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9684X targets HPC / Cache Sensitive Workloads, EPYC 9555P targets Data Center / Single Socket. Direct competitor: EPYC 9684X rivals Xeon 6979P; EPYC 9555P rivals Xeon 6979P.
| Feature | EPYC 9684X | EPYC 9555P |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | HPC / Cache Sensitive Workloads | Data Center / Single Socket |
Value Analysis
The EPYC 9684X launched at $14756 MSRP, while the EPYC 9555P debuted at $7983. At current prices ($14756 vs $6130), the EPYC 9555P is $8626 cheaper. In terms of value (PassMark points per dollar), the EPYC 9684X delivers 8.3 pts/$ vs 22.1 pts/$ for the EPYC 9555P — making the EPYC 9555P the 91.1% better value option.
| Feature | EPYC 9684X | EPYC 9555P |
|---|---|---|
| MSRP | $14756 | $7983-46% |
| Avg Price (30d) | $14756 | $6130-58% |
| Performance per Dollar | 8.3 | 22.1+166% |
| Release Date | 2023 | 2024 |
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