EPYC 9745 vs EPYC 9555
EPYC 9745
EPYC 9555
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 9745
Performance Per Dollar EPYC 9555
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9745 | EPYC 9555 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($10,588) | ✅ More affordable ($7,973) |
| Longevity | ✨ Modern (Turin (2024) / 3 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | EPYC 9745 | EPYC 9555 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+35%) |
| Upfront Cost | ⚠️ Higher cost ($10,588) | ✅ More affordable ($7,973) |
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 9745 and EPYC 9555
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.
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.
Processing Power
The EPYC 9745 packs 128 cores / 256 threads, while the EPYC 9555 offers 64 cores / 128 threads — the EPYC 9745 has 64 more cores. Boost clocks reach 3.7 GHz on the EPYC 9745 versus 4.4 GHz on the EPYC 9555 — a 17.3% clock advantage for the EPYC 9555 (base: 2.4 GHz vs 3.2 GHz). Both are built on the Turin (2024) architecture using a 3 nm process. In PassMark, the EPYC 9745 scores 130,698 against the EPYC 9555's 133,253 — a 1.9% lead for the EPYC 9555. Both processors carry 256 MB (total) of L3 cache.
| Feature | EPYC 9745 | EPYC 9555 |
|---|---|---|
| Cores / Threads | 128 / 256+100% | 64 / 128 |
| Boost Clock | 3.7 GHz | 4.4 GHz+19% |
| Base Clock | 2.4 GHz | 3.2 GHz+33% |
| L3 Cache | 256 MB (total) | 256 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 3 nm-25% | 4 nm |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 130,698 | 133,253+2% |
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 9745) and SP5 (EPYC 9555).
| Feature | EPYC 9745 | EPYC 9555 |
|---|---|---|
| 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 | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9745 targets Data Center / High Density, EPYC 9555 targets Data Center. Direct competitor: EPYC 9745 rivals Xeon 6980P; EPYC 9555 rivals Xeon 6972P.
| Feature | EPYC 9745 | EPYC 9555 |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center / High Density | Data Center |
Value Analysis
The EPYC 9745 launched at $12141 MSRP, while the EPYC 9555 debuted at $9826. At current prices ($10588 vs $7973), the EPYC 9555 is $2615 cheaper. In terms of value (PassMark points per dollar), the EPYC 9745 delivers 12.3 pts/$ vs 16.7 pts/$ for the EPYC 9555 — making the EPYC 9555 the 30.1% better value option.
| Feature | EPYC 9745 | EPYC 9555 |
|---|---|---|
| MSRP | $12141 | $9826-19% |
| Avg Price (30d) | $10588 | $7973-25% |
| Performance per Dollar | 12.3 | 16.7+36% |
| Release Date | 2024 | 2024 |
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