AMD EPYC 9275F vs Intel Xeon w9-3575X Comparison

The Intel Xeon w9-3575X and AMD EPYC 9275F are both flagship server/workstation processors aimed at heavy compute loads, but the data shows they have very distinct personalities. The AMD EPYC 9275F claims the overall win tally at 13 benchmark victories against the Intel chip’s 3, yet the magnitude of Intel’s wins in specific workloads reveals a more nuanced picture than the raw scoreboard suggests. This analysis breaks down the head-to-head results, architecture differences, and the practical use-case implications of each processor’s strengths.

Head-to-Head Benchmarks

The most striking result in the entire comparison is the passmark_floating_point_math test, where the Intel Xeon w9-3575X delivers a 35.4% victory over the EPYC 9275F. Intel scores 273398 against AMD’s 201888, a massive gap that indicates the Xeon’s raw floating-point throughput is in a different class entirely. This is not a marginal lead; it’s a decisive advantage that will matter for scientific computing, financial modeling, and any workload dominated by FPU operations.

Intel’s second major win comes in passmark_extended_instructions, where it leads by 15.8% with a score of 109843 versus 94889. This benchmark typically reflects AVX-512 and similar vectorized instruction throughput, and the 15.8% delta suggests the Xeon’s implementation is significantly more efficient for these specialized tasks. The third Intel victory is narrower: passmark_data_compression shows the Xeon ahead by just 0.6% (1219584 vs 1212560), a statistical tie in practical terms but still a win on the scoreboard.

The AMD EPYC 9275F’s wins are more numerous but often smaller in magnitude. Its largest margin is a 43.5% blowout in passmark_physics (12089 vs 6836), followed by a 30.7% lead in passmark_find_prime_numbers (991 vs 687). These are substantial, workload-specific wins that point to a fundamentally different compute strength. In the Cinebench suite, AMD consistently edges out Intel by 1.5% across all tests — R15 multicore (7250 vs 7140), R15 single-core (1023 vs 1008), R20 multicore (30209 vs 29751), R20 single-core (4264 vs 4200), and R23 multicore (71927 vs 70837). The consistency of that 1.5% delta is notable; it suggests a uniform per-core advantage rather than a workload-specific quirk.

AMD also wins passmark_integer_math by 6.2% (317777 vs 298224) and passmark_random_string_sorting by 6.5% (144037 vs 134723). Its single-thread lead is 3.6% in PassMark (3810 vs 3672), and it takes passmark_multithread by 1.5% (84620 vs 83338). The passmark_data_encryption margin is razor-thin at 0.6% (62664 vs 62258), favoring AMD. Overall, AMD’s 13 wins are spread across a wide range of workloads, but the average magnitude of its victories is far smaller than Intel’s two dominant wins. The average benchmark score confirms this: Intel’s 144323 sits at the 98th percentile, while AMD’s 133174 is at the 97th percentile.

The Verdict

Choose the Intel Xeon w9-3575X if your primary workloads are floating-point heavy or depend on extended instruction sets. The 35.4% lead in floating-point math and 15.8% advantage in extended instructions are not incremental improvements — they are category-level differences that will translate directly into faster simulation times, quicker rendering, and more efficient vectorized code execution. The Xeon’s data compression win, while small, adds another positive data point for archival or database workloads. Its 98th percentile standing and average score of 144323, which is 0.9% higher than its closest rival (Intel Xeon 674X at 143103), confirm it belongs at the top tier.

Choose the AMD EPYC 9275F if you need a balanced processor that wins more individual benchmarks and excels in integer-heavy, physics-based, or prime-number-finding tasks. The 43.5% physics win and 30.7% prime number advantage are enormous, and the consistent 1.5% Cinebench lead across all tests shows it’s no slouch in rendering either. AMD’s single-thread performance is also better, and its 97th percentile ranking with an average score of 133174 puts it 2.5% ahead of its nearest rival (Intel Xeon 6710E at 129930). The EPYC also demonstrates a clear integer math advantage (6.2%) that matters for general server workloads, database operations, and code compilation.

For most mixed-use server environments, AMD’s broader win distribution makes it the safer default choice. But for specialized compute nodes where floating-point or AVX-512-style throughput is the bottleneck, Intel’s wins are so large that they outweigh the loss in other areas. The data does not support a single “best” processor; it supports two distinct bests for two distinct job descriptions.

FAQ

Q: Which processor has the higher average benchmark score?

A: Intel’s Xeon w9-3575X has an average benchmark score of 144323, while AMD’s EPYC 9275F scores 133174. Intel’s average places it at the 98th percentile versus AMD’s 97th.

Q: What is the largest single-benchmark margin between the two?

A: The biggest delta is in passmark_physics, where AMD wins by 43.5% (12089 vs 6836). Intel’s largest win is 35.4% in passmark_floating_point_math (273398 vs 201888).

Q: How do the two compare in single-core performance?

A: AMD leads in both single-core benchmarks. In Cinebench R15 single-core, AMD scores 1023 versus Intel’s 1008 (a 1.5% lead), and in PassMark single-thread, AMD scores 3810 versus Intel’s 3672 (a 3.6% lead).

Q: Are both processors equally capable in memory bandwidth?

A: No. AMD supports twelve-channel memory with a bandwidth of 576.0 GB/s, while Intel uses eight-channel memory with 307.2 GB/s. AMD’s memory bandwidth is substantially higher.

Q: Which processor has more cores and threads?

A: Intel has 44 cores and 88 threads, while AMD has 24 cores and 48 threads. Intel has nearly twice as many cores, yet AMD wins the majority of benchmarks, indicating a significant per-core performance advantage.

Q: What is the difference in the process node?

A: Intel is fabricated on a 10 nm process at Intel’s own foundry, while AMD uses a 4 nm process at TSMC. AMD’s process node is smaller, which contributes to its higher base clock of 4.10 GHz versus Intel’s 2.20 GHz.

Specification Differences

The core count difference is the most obvious spec gap: Intel’s Xeon w9-3575X has 44 cores and 88 threads, while AMD’s EPYC 9275F has 24 cores and 48 threads. Intel’s base clock is 2.20 GHz versus AMD’s 4.10 GHz, but both boost to 4.80 GHz. Thermal design power differs, with Intel rated at 340 and AMD at 320. Intel uses an LGA 4677 socket, while AMD uses SP5. The memory bus is another split: Intel runs eight-channel DDR5, AMD runs twelve-channel DDR5, resulting in bandwidth of 307.2 GB/s for Intel and 576.0 GB/s for AMD. PCIe lane counts also differ: Intel provides 112 Gen 5 lanes, AMD provides 128 Gen 5 lanes. AMD’s multiplier is locked; Intel’s is unlocked. The launch MSRP for Intel is $3789, while AMD’s is $3439. Intel’s part number is SRN72, AMD’s is 100-000001144. Release dates differ as well, with Intel launching on 2024-08-23 and AMD on 2024-10-09.

Architecture Differences

The architectural divide is stark. Intel’s Xeon w9-3575X uses the Sapphire Rapids codename on a 10 nm process fabricated by Intel, with a die size of 4x 477 mm². AMD’s EPYC 9275F is based on Zen 5 architecture, codenamed Turin, built on a 4 nm process at TSMC, with a die size of 8x 70.6 mm² and 66,520 million transistors. Cache hierarchies diverge significantly: both have 80 KB of L1 per core, but Intel’s L2 is 2 MB per core versus AMD’s 1 MB per core. The L3 cache is where AMD dominates: 256 MB shared versus Intel’s 97.5 MB. Both support DDR5 and ECC memory, and neither has integrated graphics. Intel’s generation is listed as "Xeon W (Sapphire Rapids)" while AMD’s is "EPYC (Zen 5 (Turin))". AMD’s EPYC 9005 series designation is noted, while Intel’s series is null.

Where Each One Wins

Intel’s Xeon w9-3575X is the clear choice for floating-point intensive applications. The 35.4% advantage in floating-point math and 15.8% lead in extended instructions make it the superior option for scientific simulations, engineering analysis, financial risk modeling, and any workload that relies on heavy FPU or vectorized instruction execution. Its data compression win (0.6%) adds a minor edge for storage or database compression tasks. The unlocked multiplier also gives it flexibility for overclocking, though the data does not quantify that benefit.

AMD’s EPYC 9275F wins in physics simulations (43.5% lead) and prime number finding (30.7% lead), making it ideal for computational physics, cryptography, and number theory applications. Its integer math advantage (6.2%) and random string sorting lead (6.5%) point to strength in data processing, sorting algorithms, and general server-side logic. The consistent 1.5% Cinebench lead across all versions indicates better per-core performance for rendering and multi-threaded creative workloads. The 3.6% single-thread lead means snappier response for lightly-threaded tasks. AMD’s higher memory bandwidth (576.0 GB/s) and more PCIe lanes (128) make it the better foundation for memory-hungry virtualized environments or multi-GPU compute nodes, though the benchmark data does not directly test these capabilities.