EPYC 9555 vs EPYC 9845
EPYC 9555
EPYC 9845
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 9555
Performance Per Dollar EPYC 9845
Why is EPYC 9845 better than EPYC 9555?
The AMD EPYC 9845 outperforms the EPYC 9555 by approximately 15% in multi-threaded workloads, scoring 152,985 vs 133,253 in PassMark CPU Mark. With 160 cores and 320 threads compared to the 9555's 64 cores and 128 threads, the EPYC 9845 excels in highly parallelized data center workloads including virtualization, large-scale databases, and AI/ML applications.
However, the EPYC 9555 delivers 20% better single-threaded performance (3,759 vs 3,144 PassMark Single Thread) due to its higher clock speeds (3.2-4.4 GHz base-boost vs 2.1-3.7 GHz). This makes the 9555 better suited for workloads that benefit from faster individual core performance.
Both processors support DDR5-6000 across 12 channels and PCIe 5.0 x128. The EPYC 9845 benefits from a more advanced 3nm process versus the 9555's 4nm. For maximum core density and multi-threaded throughput, choose the EPYC 9845 ($11,411). For workloads favoring single-core speed, the EPYC 9555 ($9,826) offers better value.
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 9555 | EPYC 9845 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($7,973) | ⚠️ Higher cost ($8,670) |
| Longevity | ✨ Modern (Turin (2024) / 4 nm) | ✨ Modern (Turin (2024) / 3 nm) |
💎 Value Proposition
| Insight | EPYC 9555 | EPYC 9845 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+6%) |
| Upfront Cost | ✅ More affordable ($7,973) | ⚠️ Higher cost ($8,670) |
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 9555 and EPYC 9845
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 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.
Processing Power
The EPYC 9555 packs 64 cores / 128 threads, while the EPYC 9845 offers 160 cores / 320 threads — the EPYC 9845 has 96 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 3.7 GHz on the EPYC 9845 — a 17.3% clock advantage for the EPYC 9555 (base: 3.2 GHz vs 2.1 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 9845's 152,985 — a 13.8% lead for the EPYC 9845. L3 cache: 256 MB (total) on the EPYC 9555 vs 320 MB (total) on the EPYC 9845.
| Feature | EPYC 9555 | EPYC 9845 |
|---|---|---|
| Cores / Threads | 64 / 128 | 160 / 320+150% |
| Boost Clock | 4.4 GHz+19% | 3.7 GHz |
| Base Clock | 3.2 GHz+52% | 2.1 GHz |
| L3 Cache | 256 MB (total) | 320 MB (total)+25% |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 3 nm-25% |
| Architecture | Turin (2024) | Turin (2024) |
| PassMark | 133,253 | 152,985+15% |
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 9845).
| Feature | EPYC 9555 | EPYC 9845 |
|---|---|---|
| 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 9555 targets Data Center, EPYC 9845 targets Data Center / AI Training. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9845 rivals Xeon 6972P.
| Feature | EPYC 9555 | EPYC 9845 |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | AMD-V, SEV-SNP | AMD-V, SEV-SNP |
| Target Use | Data Center | Data Center / AI Training |
Value Analysis
The EPYC 9555 launched at $9826 MSRP, while the EPYC 9845 debuted at $13564. At current prices ($7973 vs $8670), the EPYC 9555 is $697 cheaper. In terms of value (PassMark points per dollar), the EPYC 9555 delivers 16.7 pts/$ vs 17.6 pts/$ for the EPYC 9845 — making the EPYC 9845 the 5.4% better value option.
| Feature | EPYC 9555 | EPYC 9845 |
|---|---|---|
| MSRP | $9826-28% | $13564 |
| Avg Price (30d) | $7973-8% | $8670 |
| Performance per Dollar | 16.7 | 17.6+5% |
| Release Date | 2024 | 2024 |
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