AMD EPYC 9475F vs Intel Xeon 6781P Comparison

The AMD EPYC 9475F and Intel Xeon 6781P represent two distinct philosophies in the server CPU space: one prioritizing high clock speeds and efficiency, the other maximizing core counts for throughput. The benchmark data reveals a clear split between single-thread dominance and multi-thread volume. The EPYC 9475F, with its Zen 5 architecture, posts a commanding lead in single-threaded performance, while the Xeon 6781P leverages its 80 cores to sweep most multi-threaded workloads. This analysis quantifies those differences, showing exactly where each processor excels and which user should select each part.

Head-to-Head Benchmarks

The most decisive advantage belongs to the AMD EPYC 9475F in single-threaded performance. In the PassMark single-thread test, the AMD scores 3,779 against Intel's 3,152, a 19.9% delta. This is the largest percentage gap in either direction across all benchmarks. The same 19.9% delta appears in the duplicate passmark_singlethread test, confirming the consistency of this result. This superiority stems from the AMD's 4.80 GHz boost clock versus Intel's 3.80 GHz, a difference that directly translates into faster per-core execution.

However, the Intel Xeon 6781P dominates in raw compute throughput. The largest single-score margin comes in floating-point math, where Intel scores 507,406 against AMD's 406,524, a 19.9% deficit for the AMD part. Data compression shows a similar story: Intel's 2,441,690 crushes AMD's 2,156,305, an 11.7% gap. Extended instructions follow suit, with Intel at 199,048 versus AMD's 173,169, a 13% difference. Prime number finding also favors Intel, scoring 1,687 to AMD's 1,507, a 10.7% margin.

The pattern holds in several other multi-threaded tests. Physics simulation goes to Intel at 17,753 against 16,443, a 7.4% lead. Random string sorting also favors Intel, 268,573 to 253,936, a 5.4% advantage. Even data encryption, typically a strong suit for AMD, goes narrowly to Intel at 119,623 versus 116,648, a 2.5% margin. These seven wins for Intel are not trivial; they represent a broad sweep of integer, floating-point, and memory-latency-sensitive workloads.

Yet the AMD EPYC 9475F claws back two critical multi-threaded wins. Integer math goes to AMD at 605,696 versus Intel's 584,834, a 3.6% lead. More importantly, the PassMark multithread score—an aggregate of many operations—favors AMD at 122,476 against 117,946, a 3.8% win. This suggests that despite Intel's core-count advantage, AMD's higher clock speeds and per-core efficiency keep it competitive in mixed workloads that do not scale perfectly with core count.

The overall head-to-head tally stands at 7 wins for Intel and 4 for AMD. However, the average benchmark scores tell a slightly different story: AMD's average is 350,933, while Intel's is 315,524. This discrepancy arises because the AMD part's single-thread win is so large, and because the head-to-head list omits several of Intel's Cinebench results. Intel's Cinebench R23 multi-core score of 100,254, for instance, is not part of the head-to-head comparison but indicates strong sustained multi-thread performance. The data shows a classic trade-off: Intel wins raw throughput in most specialized tests, while AMD wins in per-core speed and the aggregate multithread metric.

The Verdict

The data points to a clear recommendation based on workload type. The AMD EPYC 9475F is the superior choice for applications that are latency-sensitive or depend heavily on single-threaded performance. Its 19.9% lead in single-thread tests and 3.8% win in the multithread aggregate make it the stronger all-rounder for databases, real-time analytics, and any workload where a single fast core matters more than many slower ones. The 4.80 GHz boost clock is the highest in this comparison, and the data shows it pays off directly in integer math and the multithread metric.

The Intel Xeon 6781P is the pick for embarrassingly parallel, throughput-oriented workloads. Its 80 cores and 160 threads allow it to win floating-point math by 19.9%, data compression by 11.7%, and extended instructions by 13%. If the application can utilize all cores, Intel's 19.9% lead in floating-point is a decisive factor. The 336 MB of shared L3 cache also helps in memory-bound scenarios, as evidenced by the win in random string sorting.

For a mixed environment, the AMD part's 3.8% win in the multithread aggregate suggests it may be the safer default. But for a dedicated compute cluster running simulation or compression tasks, Intel's raw math throughput is unmatched in this pairing. The choice is not about which is "better" but which matches the workload's scaling characteristics. AMD wins on efficiency per core; Intel wins on total core count. The 4-core count difference (48 vs 80) is the fundamental driver, but the data shows AMD's higher clocks can compensate in some tests.

FAQ

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

A: The AMD EPYC 9475F scores 3,779 in the PassMark single-thread test, while the Intel Xeon 6781P scores 3,152. This gives AMD a 19.9% lead, the largest benchmark delta in this comparison.

Q: How does the Intel Xeon 6781P perform in floating-point math?

A: The Intel part scores 507,406 in PassMark floating-point math, beating the AMD EPYC 9475F's 406,524 by 19.9%. This is Intel's largest win in the head-to-head benchmarks.

Q: Which processor has more cores and threads?

A: The Intel Xeon 6781P has 80 cores and 160 threads, while the AMD EPYC 9475F has 48 cores and 96 threads. Intel has 32 more cores and 64 more threads.

Q: What is the average benchmark score difference?

A: The AMD EPYC 9475F has an average benchmark score of 350,933, while the Intel Xeon 6781P averages 315,524. AMD's average is higher despite Intel winning more head-to-head tests.

Q: Does the Intel part win the multithread test?

A: No, the AMD EPYC 9475F wins the PassMark multithread test with a score of 122,476, against Intel's 117,946. This is a 3.8% margin in AMD's favor.

Q: Which processor has a higher boost clock?

A: The AMD EPYC 9475F boosts to 4.80 GHz, while the Intel Xeon 6781P tops out at 3.80 GHz. AMD's 1.00 GHz higher boost clock correlates with its single-thread advantage.

Specification Differences

The core count disparity is the most obvious difference: AMD offers 48 cores and 96 threads, while Intel provides 80 cores and 160 threads. This 32-core advantage for Intel directly explains its wins in parallel workloads. Clock speeds also differ significantly. The AMD EPYC 9475F has a base clock of 3.65 GHz and a boost clock of 4.80 GHz, while the Intel Xeon 6781P runs at a 2.00 GHz base and 3.80 GHz boost. AMD's 0.85 GHz higher base and 1.00 GHz higher boost are substantial.

Thermal design power (TDP) also differs, with AMD rated at 400 W and Intel at 350 W. Despite having fewer cores, AMD draws more power, reflecting its higher clock speeds. Memory configuration varies: AMD uses a twelve-channel memory bus with 576.0 GB/s bandwidth, while Intel uses an eight-channel bus with 409.6 GB/s. AMD offers 166.4 GB/s more memory bandwidth. PCIe lanes are close but not equal: Intel provides 136 Gen 5 lanes versus AMD's 128 Gen 5 lanes.

The launch MSRP differs as well: AMD is listed at $7592, while Intel is at $8960. Socket compatibility is completely different: AMD uses Socket SP5, Intel uses Socket 4710. The process nodes differ too, with AMD on TSMC's 4 nm process and Intel on its own 5 nm process. Finally, part numbers and release dates differ, with AMD released on October 9, 2024, and Intel on February 23, 2025.

Architecture Differences

The fundamental architectural split is between AMD's Zen 5 and Intel's Granite Rapids. AMD's codename is "Turin," part of the EPYC 9005 series, while Intel's codename is "Granite Rapids," part of the Xeon 6 generation. The process node favors AMD: 4 nm from TSMC versus Intel's 5 nm. AMD also discloses 66,520 million transistors across 8x 70.6 mm² dies, while Intel's transistor count is not provided, but its die size is listed as 2x 598 mm²—a much larger physical footprint.

Cache hierarchies differ notably. AMD allocates 80 KB of L1 cache per core, while Intel offers 112 KB per core. L2 cache is 1 MB per core for AMD and 2 MB per core for Intel. The shared L3 cache is where Intel pulls ahead: 336 MB for Intel versus 256 MB for AMD. This 80 MB difference in L3 can be significant for large working sets. Neither processor has V-cache 3D, so that feature is absent from both.

Memory support is DDR5 for both, but the channel count and bandwidth differ as detailed above. Both support ECC memory, which is expected for server parts. Integrated graphics are N/A for both, confirming their server-only positioning. Both have locked multipliers, meaning no overclocking. The market segment is identical: Server/Workstation. The production status is "Active" for both, but AMD's release date precedes Intel's by about 4.5 months. Intel's architecture uses a dual-die design (2x 598 mm²), while AMD uses eight smaller dies (8x 70.6 mm²).

Where Each One Wins

The Intel Xeon 6781P wins in seven of eleven head-to-head tests, making it the throughput champion. It takes floating-point math by 19.9%, data compression by 11.7%, and extended instructions by 13%. These wins point to workloads like scientific computing, financial modeling, and heavy number-crunching. The 80 cores and 160 threads, combined with 336 MB of L3 cache, make it ideal for virtualization with many VMs or containerized workloads. The 136 PCIe lanes also offer slightly more I/O expansion headroom. For batch processing, video encoding, or any task that can saturate all cores, Intel's 80-core count is the deciding factor.

The AMD EPYC 9475F wins the remaining four tests, but the wins are strategically placed. Its 19.9% single-thread lead is the largest margin of any test, making it the clear choice for latency-critical applications like real-time trading, database query processing, or web serving where each request must be handled quickly. The 3.8% multithread aggregate win is surprising given Intel's core advantage, suggesting AMD's higher clocks compensate well in mixed workloads. The 576.0 GB/s memory bandwidth, which is 40% higher than Intel's, benefits memory-bound applications. The 4.80 GHz boost clock is the highest available in this comparison, making it excellent for single-threaded legacy software that does not scale across cores. For users running a mix of workloads, the AMD part's balanced performance and higher average benchmark score (350,933 vs 315,524) make it the more versatile option, despite Intel's raw core-count advantage.