AMD EPYC 7763 vs AMD Ryzen Threadripper PRO 9965WX Comparison

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7763 has 64 cores and 128 threads, while the AMD Ryzen Threadripper PRO 9965WX has 24 cores and 48 threads. The EPYC 7763 offers significantly more parallel throughput capacity on paper.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Threadripper PRO 9965WX has a boost clock of 5.40 GHz, compared to the EPYC 7763's 3.50 GHz. The Threadripper also has a higher base clock at 4.20 GHz versus 2.45 GHz.

Q: Which CPU wins in Cinebench R23 multi-core?

A: The AMD Ryzen Threadripper PRO 9965WX scores 80,976 in Cinebench R23 multi-core, which is 11.2% ahead of the EPYC 7763's 71,902. Despite having fewer cores, the Threadripper leads in this rendering workload.

Q: Which processor has the larger L3 cache?

A: The AMD EPYC 7763 has 256 MB of shared L3 cache, while the AMD Ryzen Threadripper PRO 9965WX has 128 MB. The EPYC has double the L3 capacity.

Q: What memory types do these processors support?

A: The AMD EPYC 7763 supports DDR4 memory with an eight-channel bus and 204.8 GB/s of bandwidth. The AMD Ryzen Threadripper PRO 9965WX supports DDR5 memory, also with an eight-channel bus, but with 409.6 GB/s of bandwidth, exactly double the EPYC's throughput.

Q: Which processor is newer and what architecture does each use?

A: The AMD Ryzen Threadripper PRO 9965WX is built on the Zen 5 architecture (codenamed Shimada Peak) on a 4 nm process, released in 2025. The AMD EPYC 7763 uses the Zen 3 architecture (codenamed Milan) on a 7 nm process, released in 2021.

Architecture Differences

The two processors represent entirely different generations of AMD silicon. The EPYC 7763 is a Milan part built on the Zen 3 architecture at TSMC's 7 nm node, while the Threadripper PRO 9965WX is a Shimada Peak part using Zen 5 on a 4 nm process. This generational gap explains many of the performance characteristics observed in the benchmark data.

The core counts diverge sharply. The EPYC 7763 packs 64 cores and 128 threads, while the Threadripper PRO 9965WX offers 24 cores and 48 threads. The EPYC's massive core count is its primary architectural weapon, whereas the Threadripper relies on higher clocks and newer IPC to compensate for its lower core count.

Clock speeds tell a clear story. The EPYC 7763 runs at a 2.45 GHz base clock and 3.50 GHz boost, while the Threadripper PRO 9965WX operates at a 4.20 GHz base and 5.40 GHz boost. That is a substantial clock advantage for the Threadripper, especially in single-threaded scenarios.

Cache hierarchies also differ. The EPYC 7763 has 64 KB of L1 per core and 512 KB of L2 per core, with 256 MB of shared L3. The Threadripper PRO 9965WX also has 64 KB of L1 per core but doubles the L2 to 1 MB per core, while its L3 is 128 MB total. The EPYC's larger L3 reflects its server-oriented design with more cores sharing a massive pool.

Both processors use eight-channel memory buses, but the memory generations differ. The EPYC 7763 supports DDR4 with 204.8 GB/s of bandwidth, while the Threadripper PRO 9965WX supports DDR5 with 409.6 GB/s. The Threadripper has exactly double the memory bandwidth.

PCIe support also differs. The EPYC 7763 provides Gen 4 with 128 lanes (CPU only), while the Threadripper PRO 9965WX provides Gen 5 with 128 lanes (CPU only). Both offer the same lane count, but the Threadripper's newer PCIe standard doubles the per-lane bandwidth potential.

The transistor counts are nearly identical: 33,200 million for the EPYC and 33,260 million for the Threadripper. However, the die layouts differ, with the EPYC using 8x 81 mm² dies and the Threadripper using 4x 70.6 mm² dies. The Threadripper achieves comparable transistor density on a smaller total die area thanks to the 4 nm node.

The Threadripper PRO 9965WX has an unlocked multiplier, while the EPYC 7763 does not. This makes the Threadripper more flexible for overclocking scenarios, though the EPYC's server positioning typically prioritizes stability and power efficiency over overclocking headroom.

Head-to-Head Benchmarks

The benchmark data reveals a split personality between these two processors. The Threadripper PRO 9965WX dominates in rendering workloads and single-threaded tests, while the EPYC 7763 wins in several math and data-processing benchmarks.

Starting with Cinebench, the Threadripper wins every single test. In Cinebench R15 multi-core, it scores 8,162 versus the EPYC's 7,247, an 11.2% advantage. The same 11.2% delta appears in Cinebench R15 single-core (1,152 vs 1,023), R20 multi-core (34,009 vs 30,198), R20 single-core (4,801 vs 4,263), R23 multi-core (80,976 vs 71,902), and R23 single-core (11,431 vs 10,150). The consistency of this 11.2% margin across all six Cinebench tests is remarkable. It suggests that the Threadripper's architectural and clock advantages translate uniformly across both single and multi-threaded rendering workloads.

PassMark tests tell a different story. The EPYC 7763 wins 6 of the 10 PassMark tests, and some by very large margins. The biggest win is in data encryption, where the EPYC scores 121,001 against the Threadripper's 66,155, a massive 82.9% advantage. This is the largest delta in the entire comparison. Integer math also favors the EPYC heavily: 516,920 versus 349,195, a 48% lead. Floating point math goes to the EPYC at 287,919 versus 229,685, a 25.4% margin. Data compression favors the EPYC at 1,628,973 versus 1,345,230, a 21.1% lead. Random string sorting also goes to the EPYC: 182,676 versus 149,617, a 22.1% advantage. The physics test is the closest result of all, with the EPYC winning narrowly at 7,708 versus 7,529, just 2.4% ahead.

The Threadripper wins the remaining PassMark tests. Single-thread performance is a dominant win for the Threadripper: 4,551 versus 2,518, a 44.7% advantage. This is the second-largest delta in the comparison and reflects the Threadripper's high clocks and newer Zen 5 architecture. Extended instructions go to the Threadripper at 108,753 versus 98,294, a 9.6% lead. Find prime numbers favors the Threadripper at 752 versus 668, an 11.2% margin. PassMark multi-thread goes to the Threadripper at 92,604 versus 84,591, an 8.7% lead.

The overall win count stands at 6 for the EPYC and 11 for the Threadripper across all 17 head-to-head benchmarks. However, the magnitude of the EPYC's wins in encryption and integer math is substantial. The average benchmark score tells a different story: the EPYC 7763 has an average benchmark score of 179,916, while the Threadripper PRO 9965WX sits at 147,009. The EPYC's average is dragged up by its enormous data compression and encryption scores.

The Verdict

The data paints a clear picture of two processors built for different priorities. The AMD Ryzen Threadripper PRO 9965WX is the better choice for workloads that depend on rendering performance and single-threaded responsiveness. Its consistent 11.2% lead across every Cinebench test, combined with a 44.7% single-thread advantage in PassMark, makes it the stronger option for creative professionals, 3D artists, and anyone running software that scales well with high clocks and modern IPC.

The AMD EPYC 7763 is the better choice for data-heavy server workloads. Its 82.9% lead in data encryption, 48% lead in integer math, and 25.4% lead in floating point math indicate that it excels at cryptographic operations, financial modeling, and scientific computing. Its 21.1% advantage in data compression and 22.1% lead in random string sorting also make it well-suited for database and storage-related tasks.

The EPYC's 64 cores and 128 threads provide raw parallel capacity that the Threadripper cannot match in core-count-limited scenarios. The Threadripper's 24 cores, however, are individually far more powerful, and its 409.6 GB/s of DDR5 bandwidth doubles the EPYC's 204.8 GB/s DDR4 throughput.

For users who need a workstation processor for interactive work, rendering, and mixed single/multi-threaded productivity, the Threadripper PRO 9965WX is the data-backed choice. For server deployments focused on encryption, heavy integer math, and data processing at scale, the EPYC 7763 remains highly competitive despite its older architecture.

Specification Differences

The following specifications differ between the two processors:

• Cores: 64 (EPYC 7763) vs 24 (Threadripper PRO 9965WX)
• Threads: 128 (EPYC 7763) vs 48 (Threadripper PRO 9965WX)
• Base clock: 2.45 GHz (EPYC 7763) vs 4.20 GHz (Threadripper PRO 9965WX)
• Boost clock: 3.50 GHz (EPYC 7763) vs 5.40 GHz (Threadripper PRO 9965WX)
• TDP: 280 W (EPYC 7763) vs 350 W (Threadripper PRO 9965WX)
• Socket: AMD Socket SP3 (EPYC 7763) vs AMD Socket sTR5 (Threadripper PRO 9965WX)
• Architecture: Zen 3 (EPYC 7763) vs Zen 5 (Threadripper PRO 9965WX)
• Codename: Milan (EPYC 7763) vs Shimada Peak (Threadripper PRO 9965WX)
• Process node: 7 nm (EPYC 7763) vs 4 nm (Threadripper PRO 9965WX)
• Die size: 8x 81 mm² (EPYC 7763) vs 4x 70.6 mm² (Threadripper PRO 9965WX)
• L2 cache: 512 KB per core (EPYC 7763) vs 1 MB per core (Threadripper PRO 9965WX)
• L3 cache: 256 MB shared (EPYC 7763) vs 128 MB (Threadripper PRO 9965WX)
• Memory support: DDR4 (EPYC 7763) vs DDR5 (Threadripper PRO 9965WX)
• Memory bandwidth: 204.8 GB/s (EPYC 7763) vs 409.6 GB/s (Threadripper PRO 9965WX)
• PCIe: Gen 4, 128 lanes (EPYC 7763) vs Gen 5, 128 lanes (Threadripper PRO 9965WX)
• Integrated graphics: None (EPYC 7763) vs N/A (Threadripper PRO 9965WX)
• Release date: 2021-03-14 (EPYC 7763) vs 2025-07-22 (Threadripper PRO 9965WX)
• Launch MSRP: $7890 (EPYC 7763) vs $2899 (Threadripper PRO 9965WX)
• Multiplier unlocked: No (EPYC 7763) vs Yes (Threadripper PRO 9965WX)

Where Each One Wins

The EPYC 7763 wins decisively in data encryption, scoring 121,001 against the Threadripper's 66,155. This makes it the stronger choice for secure communications, VPN gateways, and any workload involving cryptographic operations. Its 48% lead in integer math (516,920 vs 349,195) points to strength in financial calculations, database indexing, and general server-side computation. The 25.4% floating point advantage (287,919 vs 229,685) favors scientific simulations and engineering analysis. Data compression at 1,628,973 versus 1,345,230 and random string sorting at 182,676 versus 149,617 indicate strong performance in storage systems, backup pipelines, and data warehousing. The narrow 2.4% physics win (7,708 vs 7,529) rounds out the EPYC's profile as a well-rounded server processor.

The Threadripper PRO 9965WX wins every Cinebench test by 11.2%, covering both single and multi-core rendering. Its 44.7% single-thread advantage in PassMark (4,551 vs 2,518) makes it the clear choice for responsive desktop use, code compilation, and workloads that rely on single-threaded performance. The 9.6% lead in extended instructions (108,753 vs 98,294) suggests advantages in SIMD-heavy workloads. The 11.2% margin in prime number finding (752 vs 668) indicates better performance in certain mathematical workloads. The 8.7% multi-thread win (92,604 vs 84,591) shows that even with fewer cores, the Threadripper can outpace the EPYC in general multi-threaded throughput.

In summary, the EPYC 7763 is the data-processing specialist with massive wins in encryption and integer math, while the Threadripper PRO 9965WX is the rendering and single-thread champion with consistent wins across all Cinebench tests and a dominant single-thread score. The choice between them depends entirely on workload type: server-side data processing favors the EPYC, while workstation rendering and interactive performance favor the Threadripper.