AMD EPYC 9275F vs AMD Ryzen 9 PRO 9965X3D Comparison

Head-to-Head Benchmarks

The PassMark suite paints a clear picture of two very different processors. The AMD EPYC 9275F wins nine of the eleven head-to-head benchmarks, and it does so by substantial margins. The Ryzen 9 PRO 9965X3D wins the remaining two, with a single-thread advantage that is equally decisive. The largest gap is in the physics test, where the EPYC 9275F scores 12,089 against the Ryzen's 4,801 — a delta of -60.3% from the Ryzen's perspective. That is not a marginal lead; it is a near-tripling of throughput.

The EPYC 9275F also dominates in the integer and floating-point math workloads. In integer math, it posts 317,777 versus 237,955, a 25.1% advantage. Floating-point math shows a similar pattern: 201,888 versus 157,123, a 22.2% lead. Prime number finding is another rout, with the EPYC at 991 against the Ryzen's 599, a 39.6% gap. The EPYC's 24 cores and 48 threads are clearly doing heavy lifting in these parallel workloads, whereas the Ryzen's 16 cores and 32 threads fall behind.

Data compression and encryption follow the same trend. The EPYC scores 1,212,560 in data compression, 26.1% ahead of the Ryzen's 895,563. In encryption, the EPYC's 62,664 beats the Ryzen's 43,905 by 29.9%. Random string sorting, a test sensitive to memory hierarchy and cache, shows a 35.5% EPYC lead (144,037 versus 92,886). Extended instruction throughput is also EPYC-favored, with 94,889 versus 70,797, a 25.4% delta.

The multithread score is the aggregate measure of parallel capability, and here the EPYC wins 84,620 to 68,225, a 19.4% margin. That is significant, but notably smaller than the deltas in more specific parallel tests like physics or prime numbers. The Ryzen's higher boost clock of 5.50 GHz versus the EPYC's 4.80 GHz helps it close the gap in mixed workloads.

The Ryzen's two wins are both in single-thread tests, and they are identical scores: 4,614 in both `passmark_single_thread` and `passmark_singlethread`. The EPYC scores 3,810 in both. That is a 21.1% advantage for the Ryzen. This is the one area where the Ryzen's architecture — a Granite Ridge part with a 4.30 GHz base and 5.50 GHz boost — clearly outpaces the EPYC's Turin design with its 4.10 GHz base and 4.80 GHz boost. The Ryzen's higher clock ceiling translates directly into faster single-threaded execution.

The average benchmark scores tell a slightly different story. The Ryzen 9 PRO 9965X3D has an average benchmark score of 143,735, while the EPYC 9275F averages 133,174. That seems contradictory given the head-to-head results, but it reflects the different benchmark suites each processor was tested with. The Ryzen's average is based on a PassMark-only set, while the EPYC's includes Cinebench R15, R20, and R23 scores. The EPYC's Cinebench R23 multi-core score of 71,927 and single-core of 10,154 are strong, but its PassMark single-thread of 3,810 drags its overall average down relative to the Ryzen's consistently high PassMark results.

The Ryzen's percentile ranking is 98, against the EPYC's 97. Both are elite parts, but the Ryzen sits one percentile higher despite losing most head-to-head tests. This is because the Ryzen's nearest rivals — the Intel Xeon 6732P at 143,444 (0.2% delta) and the Intel Xeon w9-3575X at 144,323 (-0.4% delta) — are extremely close, whereas the EPYC's nearest rivals are more spread out. The EPYC 9275F leads the Intel Xeon 6710E by 2.5% and the AMD EPYC 9354 by 5%, but trails the Intel Xeon 6737P by 5.3%.

The Verdict

The data is unambiguous for parallel-heavy server workloads: the AMD EPYC 9275F is the superior processor. Its 9-to-2 win record in head-to-head benchmarks, combined with margins of 20-60% in compute-intensive tests, makes it the obvious choice for multi-threaded throughput. The EPYC's 24 cores, 48 threads, and 256 MB of shared L3 cache provide the raw resources needed for database queries, scientific computing, and virtualization. Its twelve-channel memory bus with 576.0 GB/s bandwidth is a massive advantage over the Ryzen's dual-channel 89.6 GB/s, which explains its dominance in memory-sensitive workloads like random string sorting.

The Ryzen 9 PRO 9965X3D is the pick for single-threaded performance and for workloads that do not scale perfectly across many cores. Its 21.1% lead in single-thread tests is substantial and cannot be ignored. If the application is latency-sensitive, runs on one or two threads, or demands the highest possible clock speeds, the Ryzen is the better fit. Its 128 MB of L3 cache and Radeon integrated graphics also make it a more self-contained workstation part, whereas the EPYC requires a discrete GPU (it has no integrated graphics).

For a server socket, the EPYC wins outright. Its SP5 platform with 128 PCIe Gen 5 lanes dwarfs the Ryzen's 24 lanes, and its twelve-channel memory architecture is designed for data center scale. The Ryzen's AM5 socket and dual-channel memory are workstation-oriented, suited for a professional desktop or a compact workstation where single-thread responsiveness matters more than raw parallel throughput.

The launch MSRP of the EPYC 9275F is $3439, a figure that reflects its server positioning. The Ryzen has no launch MSRP listed, but its market segment is also listed as Server/Workstation, so both target the same broad category. The choice hinges on workload, not price.

Where Each One Wins

The EPYC 9275F is the clear winner in every parallel PassMark test. Data compression, encryption, extended instructions, prime number finding, floating-point math, integer math, multithread, physics, and random string sorting all go to the EPYC. The physics test is its largest win at 60.3%, and the multithread test is its smallest at 19.4%. If a workload can use more than 16 cores, the EPYC's 24-core design will almost certainly deliver more throughput.

The Ryzen 9 PRO 9965X3D wins only in single-threaded tests, but it wins them decisively. A 21.1% lead in single-thread performance is the kind of margin that matters for interactive applications, front-end web servers, or any code path that is inherently serial. The Ryzen's 5.50 GHz boost clock is the key differentiator here, and it shows in the numbers.

For memory bandwidth, the EPYC's twelve-channel bus is the clear winner, but the Ryzen's dual-channel setup is adequate for its core count. The EPYC's 576.0 GB/s versus the Ryzen's 89.6 GB/s is a 6.4x difference, which explains why the EPYC wins memory-intensive tests like random string sorting by 35.5%. The Ryzen's 128 MB L3 cache helps, but it cannot overcome the bandwidth deficit.

FAQ

Q: Which processor has a higher single-thread score?

A: The AMD Ryzen 9 PRO 9965X3D scores 4,614 in both single-thread PassMark tests, which is 21.1% higher than the AMD EPYC 9275F's 3,810.

Q: What is the biggest performance gap between the two in any benchmark?

A: The largest gap is in the physics test, where the AMD EPYC 9275F scores 12,089 versus the Ryzen's 4,801, a 60.3% difference.

Q: How many cores and threads does each processor have?

A: The AMD EPYC 9275F has 24 cores and 48 threads, while the AMD Ryzen 9 PRO 9965X3D has 16 cores and 32 threads.

Q: Which processor has more L3 cache?

A: The AMD EPYC 9275F has 256 MB of shared L3 cache, while the AMD Ryzen 9 PRO 9965X3D has 128 MB of L3 cache.

Q: What is the memory bandwidth difference?

A: The AMD EPYC 9275F has a twelve-channel memory bus with 576.0 GB/s bandwidth, versus the Ryzen's dual-channel 89.6 GB/s.

Q: Which processor has a higher average benchmark score?

A: The AMD Ryzen 9 PRO 9965X3D has an average benchmark score of 143,735, which is higher than the EPYC's 133,174, though the EPYC's average includes Cinebench results that the Ryzen lacks.

Architecture Differences

The two processors share a common foundation: both are built by AMD on a 4 nm TSMC process node, and both use the Zen 5 architecture. The Ryzen 9 PRO 9965X3D is codenamed Granite Ridge, while the EPYC 9275F is codenamed Turin. The core design is the same, with 80 KB of L1 cache per core and 1 MB of L2 per core on both parts.

The transistor counts and die sizes diverge sharply. The Ryzen uses 16,630 million transistors across a 2x 70.6 mm² die configuration. The EPYC uses 66,520 million transistors across an 8x 70.6 mm² die setup. That is a 4x difference in die count and a 4x difference in transistor budget, reflecting the EPYC's larger core count and memory controllers.

Cache is another major split. The Ryzen has 128 MB of L3 cache, while the EPYC has 256 MB of shared L3 cache. The EPYC's cache is double the Ryzen's, which is critical for workloads with large working sets. The Ryzen's L3 is still substantial, but the EPYC's larger pool gives it an edge in data-heavy applications.

Memory support is identical in type — both support DDR5 — but the memory bus is where the architectures diverge. The Ryzen has a dual-channel bus with 89.6 GB/s bandwidth, while the EPYC has a twelve-channel bus with 576.0 GB/s. This is the single largest architectural difference and explains many of the benchmark deltas. The EPYC's memory system is designed for server-scale throughput, while the Ryzen's is more modest.

PCIe connectivity also differs. The Ryzen offers 24 PCIe Gen 5 lanes, while the EPYC offers 128 PCIe Gen 5 lanes. The EPYC's 128 lanes are a server-class feature, enabling many NVMe drives, GPUs, or network cards. The Ryzen's 24 lanes are sufficient for a workstation with one or two expansion cards.

Both processors support ECC memory and have locked multipliers. The Ryzen includes Radeon integrated graphics, while the EPYC has no integrated graphics. The Ryzen's iGPU makes it a self-contained workstation processor, while the EPYC requires a discrete GPU for display output.

The sockets are incompatible: the Ryzen uses AMD Socket AM5, and the EPYC uses AMD Socket SP5. This is a fundamental platform difference. The Ryzen's release date is 2026-06-29, while the EPYC's is 2024-10-09. The EPYC is the older part, but its server-class architecture remains competitive. The Ryzen's newer release date aligns with its higher single-thread performance, but the EPYC's older design still dominates in parallel workloads.