EPYC 9555
EPYC 9745
EPYC 9555 vs EPYC 9745 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 9745 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 9745: 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: +18.6% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $2,315 less on MSRP ($9,826 MSRP vs $12,141 MSRP).
- ✅Delivers 26.0% more PassMark for each dollar spent, at 13.6 vs 10.8 PassMark/$ ($9,826 MSRP vs $12,141 MSRP).
- ✅Draws 360W instead of 400W, a 40W reduction.
Trade-offs
- ❌Fewer obvious downsides in this matchup outside of normal market pricing swings.
EPYC 9745
2024Why buy it
Trade-offs
- ❌Worse for gaming: lower average FPS than EPYC 9555 across 50 shared CPU benchmark tests.
- ❌Lower PassMark (130,698 vs 133,253).
- ❌Lower PassMark per dollar, at 10.8 vs 13.6 PassMark/$ ($12,141 MSRP vs $9,826 MSRP).
Quick Answers
So, is EPYC 9555 better than EPYC 9745?
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 9745 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 9745
The EPYC 9745 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 128 cores and 256 threads. Base frequency is 2.4 GHz, with boost up to 3.7 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 3 nm process technology. Socket: SP5. Thermal design power (TDP): 400 Watt. Memory support: DDR5. Passmark benchmark score: 130,698 points. Launch price was $12,141.
Processing Power
The EPYC 9555 packs 64 cores / 128 threads, while the EPYC 9745 offers 128 cores / 256 threads — the EPYC 9745 has 64 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 3.7 GHz on the EPYC 9745 — a 17.3% clock advantage for the EPYC 9555 (base: 3.2 GHz vs 2.4 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555 scores 133,253 against the EPYC 9745's 130,698 — a 1.9% lead for the EPYC 9555. Both processors carry 256 MB (total) of L3 cache.
| Feature | EPYC 9555 | EPYC 9745 |
|---|---|---|
| Cores / Threads | 64 / 128 | 128 / 256+100% |
| Boost Clock | 4.4 GHz+19% | 3.7 GHz |
| Base Clock | 3.2 GHz+33% | 2.4 GHz |
| L3 Cache | 256 MB (total) | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 3 nm-25% |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 133,253+2% | 130,698 |
Memory & Platform
Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 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 9555) and SP5 (EPYC 9745).
| Feature | EPYC 9555 | EPYC 9745 |
|---|---|---|
| Socket | SP5 | SP5 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-6000 | DDR5-6000 |
| 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 9745 targets Data Center / High Density. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9745 rivals Xeon 6980P.
| Feature | EPYC 9555 | EPYC 9745 |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center | Data Center / High Density |
Value Analysis
At launch, the EPYC 9555 was priced at $9826, while the EPYC 9745 came in at $12141. On launch pricing ($9826 vs $12141), EPYC 9555 was $2315 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 10.8 pts/$ for the EPYC 9745 — making the EPYC 9555 the 23% better value option.
| Feature | EPYC 9555 | EPYC 9745 |
|---|---|---|
| MSRP | $9826-19% | $12141 |
| Performance per Dollar | 13.6+26% | 10.8 |
| Release Date | 2024 | 2024 |
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