AMD EPYC 7513 vs AMD Ryzen 9 PRO 9955 Comparison

The AMD Ryzen 9 PRO 9955 and AMD EPYC 7513 represent two very different approaches to high-core-count computing. The Ryzen 9 PRO 9955 is a 12-core Granite Ridge part built on a 4 nm process, while the EPYC 7513 is a 32-core Milan chip on 7 nm. Benchmark results show a clear split: the EPYC 7513 dominates in raw multi-threaded throughput, winning 8 of 11 head-to-head tests, but the Ryzen 9 PRO 9955 delivers a massive single-thread advantage, with an 85.4% higher score in PassMark's single-thread test. This is a classic trade-off between core count and per-core efficiency.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7513 has 32 cores and 64 threads, while the AMD Ryzen 9 PRO 9955 has 12 cores and 24 threads. The EPYC 7513 offers nearly three times the core count.

Q: How do their single-thread performances compare?

A: The Ryzen 9 PRO 9955 scores 4597 in PassMark's single-thread test, which is 85.4% higher than the EPYC 7513's 2479. The Ryzen's 5.40 GHz boost clock, compared to the EPYC's 3.65 GHz, explains much of this gap.

Q: Which processor wins in multi-threaded workloads?

A: The EPYC 7513 wins the PassMark multithread test with a score of 59331, beating the Ryzen 9 PRO 9955's 54866 by 7.5%. The EPYC also wins integer math by 33% and physics by 34.9%.

Q: What are the memory architecture differences?

A: The Ryzen 9 PRO 9955 supports DDR5 on a dual-channel bus with 89.6 GB/s bandwidth. The EPYC 7513 uses DDR4 on an eight-channel bus with 204.8 GB/s bandwidth, providing over twice the memory bandwidth.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 9 PRO 9955 and the AMD EPYC 7513 have ECC memory support enabled, making both suitable for workstation and server environments where data integrity matters.

Q: What is the production status and launch MSRP of the EPYC 7513?

A: The EPYC 7513 has a production status of "Active" and a launch MSRP of $2840. The Ryzen 9 PRO 9955 also has an "Active" production status but no launch MSRP is provided.

Architecture Differences

The Ryzen 9 PRO 9955 is built on a 4 nm process at TSMC, codenamed Granite Ridge, and belongs to the Zen 5 generation. It uses a chiplet design with a die size of 2x 70.6 mm² and contains 16,630 million transistors. The EPYC 7513 is a Zen 3 part codenamed Milan, fabricated on a 7 nm process with 8x 81 mm² dies and 33,200 million transistors. The process node difference gives the Ryzen a significant efficiency advantage, though the EPYC compensates with far more silicon area.

Cache hierarchies differ substantially. The Ryzen 9 PRO 9955 has 80 KB L1 and 1 MB L2 per core, with 64 MB of L3. The EPYC 7513 has 64 KB L1 and 512 KB L2 per core, but its L3 is 128 MB shared. The EPYC's larger L3 pool benefits workloads that reuse data across many threads.

Memory support is a major differentiator. The Ryzen 9 PRO 9955 uses dual-channel DDR5 with 89.6 GB/s bandwidth, while the EPYC 7513 uses eight-channel DDR4 with 204.8 GB/s. The EPYC's memory bandwidth is 128.6% higher, which is crucial for memory-bound server workloads. PCIe connectivity also differs: the Ryzen offers Gen 5 with 24 CPU lanes, while the EPYC offers Gen 4 with 128 lanes. The EPYC's massive lane count is designed for expansion in server chassis.

The Ryzen 9 PRO 9955 includes integrated Radeon Graphics, while the EPYC 7513 has no integrated graphics. Both processors have locked multipliers and target the server/workstation market segment. The Ryzen is rated at 120W TDP, while the EPYC is rated at 200W.

Head-to-Head Benchmarks

The EPYC 7513 wins the majority of the head-to-head benchmarks, and several victories are by wide margins. In data encryption, the EPYC scores 63628 against the Ryzen's 33754, a 47% advantage. Data compression shows a 26.6% lead for the EPYC with a score of 932240 versus 684470. Integer math is another decisive win: the EPYC scores 272145, which is 33% higher than the Ryzen's 182312. The physics test shows a 34.9% gap, with the EPYC at 5118 and the Ryzen at 3332. Random string sorting goes to the EPYC by 31.3%, with scores of 104660 and 71928 respectively. Floating point math is 19.9% in favor of the EPYC, scoring 151713 versus 121509.

The multithread test is closer, with the EPYC winning 59331 to 54866, a 7.5% margin. Extended instructions show a narrow EPYC win at 56451 versus 54903, just 2.7% apart. These two results suggest that the Ryzen's per-core efficiency can partially offset the EPYC's core count advantage in certain workloads.

The Ryzen 9 PRO 9955 wins the remaining three tests. Its single-thread score of 4597 crushes the EPYC's 2479, an 85.4% lead. In find prime numbers, the Ryzen scores 461 against the EPYC's 380, a 21.3% advantage. The Ryzen also wins the second single-thread listing by the same 85.4% margin.

The average benchmark score tells a similar story at a higher level: the Ryzen 9 PRO 9955 has an average score of 110612, while the EPYC 7513 averages 102244. This puts the Ryzen 8.2% ahead on average, despite losing most individual tests. Both processors rank in the 97th percentile versus all CPUs.

The Verdict

The data points to a clear choice for different workloads. The AMD EPYC 7513 is the right pick for multithreaded, memory-intensive server tasks. Its 47% lead in data encryption, 33% lead in integer math, and 34.9% lead in physics make it the superior choice for database operations, virtualization, and scientific computing. The eight-channel DDR4 memory with 204.8 GB/s bandwidth is a decisive advantage for workloads that stream large datasets.

The AMD Ryzen 9 PRO 9955 is the better choice for single-threaded performance and general workstation use. Its 85.4% single-thread advantage is enormous, and its higher average benchmark score of 110612 indicates better overall balance. The 5.40 GHz boost clock and Zen 5 architecture deliver responsiveness that the EPYC 7513 cannot match, despite the EPYC's higher core count.

For a system that needs maximum core throughput, the EPYC 7513 is the data-driven winner. For a workstation that must handle both interactive single-threaded tasks and occasional multi-threaded loads, the Ryzen 9 PRO 9955 provides a compelling package with its 4 nm efficiency and integrated graphics. The EPYC's 200W TDP also demands more robust cooling than the Ryzen's 120W rating.

Specification Differences

| Specification | AMD Ryzen 9 PRO 9955 | AMD EPYC 7513 |

|---|---|---|

| Cores | 12 | 32 |

| Threads | 24 | 64 |

| Base Clock | 3.40 GHz | 2.60 GHz |

| Boost Clock | 5.40 GHz | 3.65 GHz |

| TDP | 120 W | 200 W |

| Socket | AMD Socket AM5 | AMD Socket SP3 |

| Codename | Granite Ridge | Milan |

| Generation | Ryzen 9 (Zen 5) | EPYC (Zen 3) |

| Process Node | 4 nm | 7 nm |

| Transistors | 16,630 million | 33,200 million |

| Die Size | 2x 70.6 mm² | 8x 81 mm² |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| L2 Cache | 1 MB (per core) | 512 KB (per core) |

| L3 Cache | 64 MB | 128 MB (shared) |

| Memory Support | DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 89.6 GB/s | 204.8 GB/s |

| PCIe | Gen 5, 24 Lanes | Gen 4, 128 Lanes |

| Integrated Graphics | Radeon Graphics | None |

| Release Date | 2026-06-29 | 2021-03-14 |

| Part Number | 100-000001971 | 100-000000334100-100000334WOF |

Where Each One Wins

The EPYC 7513 wins in all core-count-sensitive workloads. The data shows decisive victories in integer math, physics, data compression, and data encryption. Its 128 MB of shared L3 and 204.8 GB/s memory bandwidth make it ideal for server virtualization, large-scale database transactions, and heavy scientific simulations. The 128 PCIe Gen 4 lanes allow for massive storage and network expansion that the Ryzen cannot support. The EPYC also wins the multithread test and extended instructions, making it the safer choice for any workload that can use more than 24 threads.

The Ryzen 9 PRO 9955 wins where per-core speed matters most. Its 85.4% single-thread lead makes it superior for application compilation, spreadsheet calculations, and any software with a serial bottleneck. The 21.3% win in find prime numbers suggests strong performance in algorithmic and cryptographic-adjacent workloads that rely on integer iteration. The Ryzen also benefits from DDR5 support and a 4 nm process, which translates to lower power draw at 120W versus 200W. Its integrated Radeon Graphics eliminates the need for a discrete GPU in basic display output scenarios.

The Ryzen 9 PRO 9955 also has a higher average benchmark score of 110612 versus 102244, indicating that for a typical mixed workload, the Ryzen may deliver better overall responsiveness. However, the EPYC's 8 wins out of 11 head-to-head tests make it the clear winner in pure throughput. Choose the EPYC 7513 for maximum parallel compute, choose the Ryzen 9 PRO 9955 for maximum single-thread speed and efficiency.