SMC EPYC 9555P 64-core AMD Socket SP5
The 64-core EPYC 9555P on the 4nm Turin architecture delivers a 135,990 PassMark multi-thread score and 4.4GHz boost, making it a strong fit for CPU-based AI inference. Its CXL 2.0 support and 256MB of L3 cache provide a smooth path for memory-intensive, complex machine-learning workloads. This processor is best for data centers running highly parallelized inferencing applications where raw core count and memory bandwidth outweigh power efficiency concerns.
Cores 64
Threads 128
Boost Clock 4400 MHz
L3 Cache 256 MB
TDP 360 W
Socket AMD Socket SP5
76 Overall Score
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong multi thread (100th percentile) 100th
- Strong ai (99th percentile) 99th
- Strong platform (97th percentile) 97th
- Strong efficiency (91st percentile) 91st
Cons
- Below average social proof (2nd percentile)
The proof
Performance
Specifications
Full Specifications
Processor
| Brand | AMD |
| Series | EPYC |
| Model | 9555P |
| Codename | Turin |
| Class | server |
| Process | 4 |
Cores & Clocks
| Cores | 64 |
| P-cores | 64 |
| Threads | 128 |
| Base Clock | 3200 |
| Boost Clock | 4400 |
Cache
| L2 Cache | 64 |
| L3 Cache | 256 MB |
Performance
| PassMark Multi | 135217 |
| PassMark Single | 3756 |
Memory
| Memory Type | DDR5 |
| Max Speed | 6000 |
| ECC | Yes |
Platform & Power
| Socket | AMD Socket SP5 |
| PCIe | 5 |
| PCIe Lanes | 128 |
| TDP | 360 |
| Max Turbo Power | 400 |
| Unlocked | No |
vs Competition
| Spec | SMC EPYC 9555P | AMD Ryzen 7 9800X3D | Intel Core Ultra 9 285K | Dell Inspiron 7700 | fosa1 fosa4ycn78izud | MSI MAG X870E Tomahawk WiFi |
|---|---|---|---|---|---|---|
| Cores | 64 | 8 | 24 | 10 | 6 | - |
| Threads | 128 | 16 | 24 | 12 | 12 | - |
| Boost Clock Mhz | 4400 | 5200 | 5700 | 4700 | 3060 | - |
| L3 Cache Mb | 256 | 96 | 36 | 12 | 12 | - |
| Tdp W | 360 | 120 | 125 | 15 | 95 | - |
| Socket | AMD Socket SP5 | AM5 | LGA 1851 | Intel BGA 1744 | LGA1366 | AM5 |
| Integrated Graphics | - | AMD Radeon Graphics | Intel Graphics | Iris Xe 96EU | - | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | Efficiency | Multi Thread | Social Proof | Single Thread |
|---|---|---|---|---|---|---|---|
| SMC EPYC 9555P | 99.3 | 76.8 | 96.7 | 90.6 | 99.5 | 1.5 | 88.7 |
| AMD Ryzen 7 9800X3D Compare | 91.2 | 98.4 | 95.1 | 87.5 | 90 | 96.5 | 95.6 |
| Intel Core Ultra 9 285K Compare | 96.2 | 99.8 | 95.9 | 97 | 96.6 | 90.7 | 99.8 |
| Dell Inspiron 7700 Compare | 62.3 | 69.4 | 70.8 | 99.4 | 66.4 | 27.4 | 82 |
| fosa1 fosa4ycn78izud Compare | 25.7 | 20.1 | 64.8 | 24.5 | 24.5 | 65 | 36.1 |
| MSI MAG X870E Tomahawk WiFi Compare | 3.3 | 20.1 | 90.9 | 3.9 | 3.9 | 90.7 | 3.1 |
Price
Value & Pricing
We started tracking prices for this product on Jun 15, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
