EPYC 9555
EPYC 9684X
EPYC 9555 vs EPYC 9684X 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 9555 vs EPYC 9684X 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 9555 vs EPYC 9684X: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 9555
2024Why buy it
- ✅Better for gaming: +16.0% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $4,930 less on MSRP ($9,826 MSRP vs $14,756 MSRP).
- ✅Delivers 64.0% more PassMark for each dollar spent, at 13.6 vs 8.3 PassMark/$ ($9,826 MSRP vs $14,756 MSRP).
- ✅Draws 360W instead of 400W, a 40W reduction.
Trade-offs
- ❌Smaller total L3 cache (256 MB vs 1.1 GB).
EPYC 9684X
2023Why buy it
- ✅+350% larger total L3 cache (1.1 GB vs 256 MB).
Trade-offs
- ❌Worse for gaming: lower average FPS than EPYC 9555 across 50 shared CPU benchmark tests.
- ❌Lower PassMark (122,017 vs 133,253).
- ❌Lower PassMark per dollar, at 8.3 vs 13.6 PassMark/$ ($14,756 MSRP vs $9,826 MSRP).
Quick Answers
So, is EPYC 9555 better than EPYC 9684X?
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 9555 vs EPYC 9684X Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 9555
The EPYC 9555 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: 133,253 points. Launch price was $9,826.
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.
Processing Power
The EPYC 9555 packs 64 cores / 128 threads, while the EPYC 9684X offers 96 cores / 192 threads — the EPYC 9684X has 32 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 3.7 GHz on the EPYC 9684X — a 17.3% clock advantage for the EPYC 9555 (base: 3.2 GHz vs 2.55 GHz). The EPYC 9555 uses the Turin (2024) architecture (4 nm), while the EPYC 9684X uses Genoa-X (2023) (5 nm). In PassMark, the EPYC 9555 scores 133,253 against the EPYC 9684X's 122,017 — a 8.8% lead for the EPYC 9555. L3 cache: 256 MB (total) on the EPYC 9555 vs 1152 MB (total) on the EPYC 9684X.
| Feature | EPYC 9555 | EPYC 9684X |
|---|---|---|
| Cores / Threads | 64 / 128 | 96 / 192+50% |
| Boost Clock | 4.4 GHz+19% | 3.7 GHz |
| Base Clock | 3.2 GHz+25% | 2.55 GHz |
| L3 Cache | 256 MB (total) | 1152 MB (total)+350% |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm-20% | 5 nm |
| Architecture | Turin (2024) | Genoa-X (2023) |
| PassMark | 133,253+9% | 122,017 |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Maximum memory speed reaches DDR5-6000 on the EPYC 9555 versus DDR5-4800 on the EPYC 9684X — the EPYC 9555 supports 25% faster memory, which can translate to measurable gains in memory-sensitive workloads. 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 9555) and SP5 (EPYC 9684X).
| Feature | EPYC 9555 | EPYC 9684X |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-6000+25% | DDR5-4800 |
| Max RAM Capacity | 6 TB | 6 TB |
| RAM Channels | 12 | 12 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128 | 128 |
Advanced Features
Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9555 targets Data Center, EPYC 9684X targets HPC / Cache Sensitive Workloads. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9684X rivals Xeon 6979P.
| Feature | EPYC 9555 | EPYC 9684X |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center | HPC / Cache Sensitive Workloads |
Value Analysis
At launch, the EPYC 9555 was priced at $9826, while the EPYC 9684X came in at $14756. On launch pricing ($9826 vs $14756), EPYC 9555 was $4930 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 8.3 pts/$ for the EPYC 9684X — making the EPYC 9555 the 48.5% better value option.
| Feature | EPYC 9555 | EPYC 9684X |
|---|---|---|
| MSRP | $9826-33% | $14756 |
| Performance per Dollar | 13.6+64% | 8.3 |
| Release Date | 2024 | 2023 |
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