AMD EPYC 7642 vs AMD Ryzen Threadripper PRO 9965WX Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive victory for the AMD Ryzen Threadripper PRO 9965WX, which wins 16 of 17 recorded comparisons against the AMD EPYC 7642. The most striking result is in single-thread performance, where the Threadripper PRO 9965WX achieves a 121.8% advantage in PassMark single-thread testing, scoring 4551 against the EPYC 7642's 2052. This is not a marginal gap; it represents more than double the throughput for lightly threaded workloads.

The Cinebench suite reinforces this dominance with remarkable consistency. Across all six Cinebench tests, the Threadripper PRO 9965WX leads by exactly 62%. In Cinebench R23 multicore, the Threadripper PRO 9965WX scores 80976 versus 49975 for the EPYC 7642, a gap that will be felt immediately in rendering and simulation workloads. The single-core results tell the same story: Cinebench R23 single-core shows 11431 for the Threadripper PRO 9965WX against 7055 for the EPYC 7642.

The EPYC 7642's sole victory comes in PassMark data encryption, where it scores 86397 against the Threadripper PRO 9965WX's 66155, a 23.4% advantage. This is a notable exception and suggests that the older EPYC architecture retains specific strengths in cryptographic workloads, likely due to its higher core count and different instruction scheduling.

Beyond the headline numbers, the Threadripper PRO 9965WX shows substantial wins in several other PassMark subtests. In extended instructions, it leads by 58% (108753 versus 68841). PassMark multithread shows a 57.5% advantage (92604 versus 58795). Find prime numbers yields a 51.6% lead (752 versus 496). Physics testing shows 47.7% superiority (7529 versus 5098). Even in areas where the EPYC 7642 has more physical cores, the Threadripper PRO 9965WX maintains clear advantages: floating point math is 26.3% higher (229685 versus 181887), random string sorting is 30.2% higher (149617 versus 114871), and integer math is 14.4% higher (349195 versus 305303). Data compression shows a narrower but still meaningful 12.5% lead (1345230 versus 1195584).

The average benchmark score reflects this overall trend: the Threadripper PRO 9965WX records an average of 147009 across its benchmark suite, placing it at the 98th percentile versus all CPUs. The EPYC 7642 averages 124006, which still ranks at the 97th percentile, but the gap between the two is substantial in absolute terms.

FAQ

Q: Which processor is faster in single-threaded workloads?

A: The AMD Ryzen Threadripper PRO 9965WX is dramatically faster. In PassMark single-thread testing, it scores 4551 versus 2052 for the AMD EPYC 7642, a 121.8% advantage. Cinebench R23 single-core confirms this with 11431 versus 7055, a 62% lead.

Q: Does the EPYC 7642 win in any benchmark category?

A: Yes, the EPYC 7642 wins in PassMark data encryption, scoring 86397 against the Threadripper PRO 9965WX's 66155, a 23.4% margin. This is the only test out of 17 where the EPYC 7642 comes out ahead.

Q: How do the two processors compare in multicore rendering?

A: The Threadripper PRO 9965WX leads by 62% across all Cinebench multicore tests. Cinebench R23 multicore shows 80976 versus 49975, while Cinebench R20 multicore shows 34009 versus 20989.

Q: What is the average benchmark score difference between the two?

A: The Threadripper PRO 9965WX has an average benchmark score of 147009, while the EPYC 7642 averages 124006. The Threadripper PRO 9965WX sits at the 98th percentile versus all CPUs, and the EPYC 7642 sits at the 97th percentile.

Q: Which processor has more cores?

A: The EPYC 7642 has 48 cores and 96 threads, while the Threadripper PRO 9965WX has 24 cores and 48 threads. Despite having half the core count, the Threadripper PRO 9965WX still wins the vast majority of benchmarks.

Q: Are both processors currently in production?

A: Yes, both the AMD Ryzen Threadripper PRO 9965WX and the AMD EPYC 7642 are listed as active production units in the database.

Architecture Differences

The two processors come from different architectural generations. The Threadripper PRO 9965WX is built on Zen 5 architecture with the codename Shimada Peak, fabricated on a 4 nm process at TSMC. The EPYC 7642 uses Zen 2 architecture with the codename Rome, fabricated on a 7 nm process, also at TSMC. This process difference alone explains much of the performance disparity: the newer 4 nm node allows for significantly higher clock speeds and better power efficiency.

The Threadripper PRO 9965WX has a base clock of 4.20 GHz and a boost clock of 5.40 GHz. The EPYC 7642 runs at a base clock of 2.40 GHz and a boost clock of 3.40 GHz. The 2 GHz boost clock advantage for the Threadripper PRO 9965WX is enormous and directly translates to the single-thread performance gap observed in benchmarks.

Cache configurations differ substantially. The Threadripper PRO 9965WX has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 128 MB of L3 cache. The EPYC 7642 has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 256 MB of shared L3 cache. The EPYC 7642's larger L3 cache reflects its server-oriented design with more cores sharing a larger pool.

Memory support is another major divergence. The Threadripper PRO 9965WX uses DDR5 memory with an eight-channel memory bus and a memory bandwidth of 409.6 GB/s. The EPYC 7642 uses DDR4 memory, also with an eight-channel bus, but with a memory bandwidth of 204.8 GB/s. The Threadripper PRO 9965WX offers exactly double the memory bandwidth, which benefits memory-intensive workloads.

PCIe capabilities also differ. The Threadripper PRO 9965WX supports PCIe Gen 5 with 128 lanes (CPU only). The EPYC 7642 supports PCIe Gen 4 without a specified lane count in the database. The Threadripper PRO 9965WX also has an unlocked multiplier, while the EPYC 7642's multiplier is locked, and the Threadripper PRO 9965WX uses Socket sTR5 while the EPYC 7642 uses Socket SP3.

The Threadripper PRO 9965WX has a TDP of 350 watts, while the EPYC 7642 has a TDP of 225 watts. The Threadripper PRO 9965WX was released on 2025-07-22, while the EPYC 7642 was released on 2019-08-06, reflecting a six-year gap in design and manufacturing technology.

The Verdict

The data points to a clear conclusion: the AMD Ryzen Threadripper PRO 9965WX is the superior processor for virtually every workload category represented in the benchmark suite. It wins 16 of 17 head-to-head comparisons, including all Cinebench tests, all PassMark math and sorting tests, and all PassMark single-thread and multithread tests. The only exception is PassMark data encryption, where the EPYC 7642 holds a 23.4% edge.

For users prioritizing single-thread performance, the choice is unambiguous. The Threadripper PRO 9965WX's 121.8% lead in PassMark single-thread testing and 62% lead in Cinebench single-core tests make it the obvious selection for applications that rely on high clock speeds and modern architecture efficiency.

For multicore workloads, the Threadripper PRO 9965WX also wins despite having 24 fewer cores and 48 fewer threads than the EPYC 7642. The 62% advantage in Cinebench R23 multicore (80976 versus 49975) demonstrates that architectural efficiency and higher clocks can overcome a significant core-count deficit.

The EPYC 7642 remains relevant only for specific encryption workloads, where its 86397 score in PassMark data encryption outperforms the Threadripper PRO 9965WX's 66155. Any system builder whose primary workload is data encryption might consider the EPYC 7642, but for all other measured tasks, the Threadripper PRO 9965WX is the better choice.

The Threadripper PRO 9965WX also offers double the memory bandwidth (409.6 GB/s versus 204.8 GB/s) and newer PCIe Gen 5 support, which future-proofs the platform for high-bandwidth peripherals. Its 98th percentile ranking versus all CPUs, compared to the EPYC 7642's 97th percentile, reflects its position as a top-tier processor in the database's overall rankings.

Specification Differences

| Specification | AMD Ryzen Threadripper PRO 9965WX | AMD EPYC 7642 |

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

| Cores | 24 | 48 |

| Threads | 48 | 96 |

| Base Clock | 4.20 GHz | 2.40 GHz |

| Boost Clock | 5.40 GHz | 3.40 GHz |

| TDP | 350 W | 225 W |

| Socket | AMD Socket sTR5 | AMD Socket SP3 |

| Architecture | Zen 5 | Zen 2 |

| Codename | Shimada Peak | Rome |

| Process Node | 4 nm | 7 nm |

| Transistors | 33,260 million | 3,800 million |

| Die Size | 4x 70.6 mm² | 74 mm² |

| L1 Cache | 64 KB (per core) | 96 KB (per core) |

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

| L3 Cache | 128 MB | 256 MB (shared) |

| Memory Support | DDR5 | DDR4 |

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

| Memory Bandwidth | 409.6 GB/s | 204.8 GB/s |

| PCIe | Gen 5, 128 Lanes (CPU only) | Gen 4 |

| Multiplier Unlocked | Yes | No |

| Release Date | 2025-07-22 | 2019-08-06 |

Where Each One Wins

The AMD Ryzen Threadripper PRO 9965WX wins in the following benchmark categories with exact margins: Cinebench R15 multicore (8162 versus 5037, 62% lead), Cinebench R15 single-core (1152 versus 711, 62% lead), Cinebench R20 multicore (34009 versus 20989, 62% lead), Cinebench R20 single-core (4801 versus 2963, 62% lead), Cinebench R23 multicore (80976 versus 49975, 62% lead), Cinebench R23 single-core (11431 versus 7055, 62% lead), PassMark data compression (1345230 versus 1195584, 12.5% lead), PassMark extended instructions (108753 versus 68841, 58% lead), PassMark find prime numbers (752 versus 496, 51.6% lead), PassMark floating point math (229685 versus 181887, 26.3% lead), PassMark integer math (349195 versus 305303, 14.4% lead), PassMark multithread (92604 versus 58795, 57.5% lead), PassMark physics (7529 versus 5098, 47.7% lead), PassMark random string sorting (149617 versus 114871, 30.2% lead), PassMark single-thread (4551 versus 2052, 121.8% lead), and PassMark singlethread (4551 versus 2052, 121.8% lead).

The AMD EPYC 7642 wins in exactly one category: PassMark data encryption (86397 versus 66155, 23.4% lead).

For use-case planning, the Threadripper PRO 9965WX is the clear choice for rendering, simulation, scientific computing, software compilation, and any workload that benefits from high single-thread performance combined with strong multicore throughput. Its 409.6 GB/s memory bandwidth and PCIe Gen 5 support make it well-suited for data-intensive workstation tasks.

The EPYC 7642 should be considered only for environments where data encryption throughput is the dominant requirement. Its 48 cores and 96 threads provide raw parallelism that, combined with its 256 MB of shared L3 cache, appears to give it an edge in cryptographic processing. For all other measured workloads, the Threadripper PRO 9965WX's architectural advantages and higher clock speeds deliver superior results.

The Threadripper PRO 9965WX also carries a launch MSRP of $2899, which the database records without further pricing commentary. The EPYC 7642 has no recorded launch MSRP in the database.