EPYC 9845 vs EPYC 9555P
EPYC 9845
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 9845
Performance Per Dollar EPYC 9555P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9845 | EPYC 9555P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($8,670) | ✅ More affordable ($6,130) |
| Longevity | ✨ Modern (Turin (2024) / 3 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | EPYC 9845 | EPYC 9555P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+25%) |
| Upfront Cost | ⚠️ Higher cost ($8,670) | ✅ 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 9845 and EPYC 9555P
EPYC 9845
The EPYC 9845 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 160 cores and 320 threads. Base frequency is 2.1 GHz, with boost up to 3.7 GHz. L3 cache: 320 MB (total). L2 cache: 1 MB (per core). Built on 3 nm process technology. Socket: SP5. Thermal design power (TDP): 390 Watt. Memory support: DDR5. Passmark benchmark score: 152,985 points. Launch price was $13,564.
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 9845 packs 160 cores / 320 threads, while the EPYC 9555P offers 64 cores / 128 threads — the EPYC 9845 has 96 more cores. Boost clocks reach 3.7 GHz on the EPYC 9845 versus 4.4 GHz on the EPYC 9555P — a 17.3% clock advantage for the EPYC 9555P (base: 2.1 GHz vs 3.2 GHz). Both are built on the Turin (2024) architecture using a 3 nm process. In PassMark, the EPYC 9845 scores 152,985 against the EPYC 9555P's 135,441 — a 12.2% lead for the EPYC 9845. L3 cache: 320 MB (total) on the EPYC 9845 vs 256 MB (total) on the EPYC 9555P.
| Feature | EPYC 9845 | EPYC 9555P |
|---|---|---|
| Cores / Threads | 160 / 320+150% | 64 / 128 |
| Boost Clock | 3.7 GHz | 4.4 GHz+19% |
| Base Clock | 2.1 GHz | 3.2 GHz+52% |
| L3 Cache | 320 MB (total)+25% | 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 | 152,985+13% | 135,441 |
| 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 DDR5-6000 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 9845) and SP5 (EPYC 9555P).
| Feature | EPYC 9845 | EPYC 9555P |
|---|---|---|
| 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 9845 targets Data Center / AI Training, EPYC 9555P targets Data Center / Single Socket. Direct competitor: EPYC 9845 rivals Xeon 6972P; EPYC 9555P rivals Xeon 6979P.
| Feature | EPYC 9845 | EPYC 9555P |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center / AI Training | Data Center / Single Socket |
Value Analysis
The EPYC 9845 launched at $13564 MSRP, while the EPYC 9555P debuted at $7983. At current prices ($8670 vs $6130), the EPYC 9555P is $2540 cheaper. In terms of value (PassMark points per dollar), the EPYC 9845 delivers 17.6 pts/$ vs 22.1 pts/$ for the EPYC 9555P — making the EPYC 9555P the 22.4% better value option.
| Feature | EPYC 9845 | EPYC 9555P |
|---|---|---|
| MSRP | $13564 | $7983-41% |
| Avg Price (30d) | $8670 | $6130-29% |
| Performance per Dollar | 17.6 | 22.1+26% |
| Release Date | 2024 | 2024 |
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