AMD EPYC 4565P vs Intel Xeon w7-3555 Comparison

The Verdict

The benchmark database presents a clear split between these two server/workstation processors, and the decision hinges on workload character. The Intel Xeon w7-3555 wins 13 of the 17 head-to-head comparisons, while the AMD EPYC 4565P takes 4. The Intel part is the safer choice for multithreaded, compute-heavy tasks where its core count and memory bandwidth dominate. The AMD EPYC 4565P, however, is the pick when single-thread responsiveness and raw integer throughput matter more than sheer core scaling.

Users prioritizing Cinebench rendering performance should choose the Intel Xeon w7-3555. Its scores lead in every Cinebench R15, R20, and R23 test, with margins between 5.8% and 5.9% across both single-core and multi-core. The Intel part also wins decisively in floating-point math, physics simulations, extended instructions, prime number finding, random string sorting, data compression, and the multithread PassMark test. The data suggests this is the processor for simulation, encryption workloads that rely on extended instruction sets, and rendering tasks.

The AMD EPYC 4565P is the choice for single-thread-heavy applications and integer math. It beats the Xeon by 24.7% in PassMark single-thread scores and by 2.4% in integer math. It also narrowly edges ahead in data encryption by 0.5%. For workloads that are latency-sensitive or depend on per-core speed, the AMD part has a measurable advantage. The EPYC also achieves this with a 170 W TDP compared to the Intel's 325 W, indicating higher efficiency per watt in its winning scenarios.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Xeon w7-3555 is built on Sapphire Rapids architecture, using a 10 nm process at Intel's foundry. It packs 28 cores and 56 threads, with a base clock of 2.70 GHz and a boost clock of 4.80 GHz. The die is composed of 4x 477 mm² chiplets. Its cache layout includes 80 KB of L1 per core, 2 MB of L2 per core, and 75 MB of L3.

The AMD EPYC 4565P belongs to the EPYC 4005 series, codenamed Grado, and uses Zen 5 architecture. It is fabricated on a 4 nm process at TSMC, with 16,630 million transistors spread across 2x 70.6 mm² dies. It offers 16 cores and 32 threads, with a much higher base clock of 4.30 GHz and a boost clock of 5.70 GHz. The cache hierarchy includes 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3.

Memory and I/O also differ sharply. The Intel Xeon supports DDR5 with an eight-channel memory bus and 307.2 GB/s of memory bandwidth. The AMD EPYC supports DDR5 on a dual-channel bus with 89.6 GB/s. The Intel part provides 112 PCIe Gen 5 lanes (CPU only), while the AMD part offers 24 PCIe Gen 5 lanes (CPU only). The AMD EPYC includes Radeon integrated graphics, whereas the Intel Xeon has no integrated graphics. Both support ECC memory. The Intel part uses Socket 4677; the AMD part uses Socket AM5.

Where Each One Wins

The Intel Xeon w7-3555 wins overwhelmingly in multi-core and floating-point scenarios. The largest single victory is in PassMark physics, where it scores 5802 against the AMD's 2976, a 95% lead. That gap suggests the Intel part is far better suited to physics simulation and similar floating-point-heavy compute. It also leads in prime number finding by 35.4%, floating-point math by 25.6%, extended instructions by 20.6%, and random string sorting by 18.2%. Data compression goes to Intel by 12.3%. The multithread PassMark score favors Intel by 6.7%.

The AMD EPYC 4565P wins where single-thread speed and integer operations are the priority. Its PassMark single-thread score of 4712 versus 3549 gives it a 24.7% advantage. Integer math also goes to AMD by 2.4%. Data encryption is a narrow AMD win by 0.5%. These results point toward workloads like interactive database queries, certain financial calculations, or any application that scales poorly across cores but rewards fast per-core execution.

The Cinebench suite is uniformly Intel territory. Across R15, R20, and R23, the Intel part leads both single-core and multi-core by nearly identical margins, all between 5.8% and 5.9%. This consistency indicates a stable architectural advantage in rendering workloads, regardless of the Cinebench version used.

FAQ

Q: Which processor has higher multi-core performance?

A: The Intel Xeon w7-3555. It wins all three multi-core Cinebench tests (R15, R20, R23) by 5.8% to 5.9%, and also leads the PassMark multithread test by 6.7%.

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

A: The AMD EPYC 4565P. It wins the PassMark single-thread test by 24.7%, scoring 4712 versus the Intel's 3549.

Q: Does the Intel Xeon have a memory bandwidth advantage?

A: Yes. The Intel Xeon w7-3555 supports eight-channel memory with 307.2 GB/s bandwidth, while the AMD EPYC 4565P uses dual-channel memory with 89.6 GB/s.

Q: What is the most significant benchmark gap between the two?

A: The largest margin is in PassMark physics, where the Intel Xeon w7-3555 scores 5802 against the AMD's 2976, a 95% difference.

Q: Does the AMD EPYC have any integrated graphics?

A: Yes, the AMD EPYC 4565P includes Radeon Graphics. The Intel Xeon w7-3555 has no integrated graphics.

Q: How do their core counts compare?

A: The Intel Xeon w7-3555 has 28 cores and 56 threads, while the AMD EPYC 4565P has 16 cores and 32 threads.

Head-to-Head Benchmarks

The Cinebench results establish a consistent pattern. In Cinebench R15 multi-core, the Intel Xeon scores 5804 against the AMD's 5484, a 5.8% lead. The single-core R15 test shows the same 5.8% margin, with scores of 819 and 774. Cinebench R20 multi-core gives Intel a 5.9% edge (24187 versus 22850), and R20 single-core also lands at 5.9% (3414 versus 3225). Cinebench R23 multi-core follows with 57590 versus 54405, again a 5.9% margin, and R23 single-core shows 8130 versus 7680, a 5.9% difference.

The PassMark suite reveals where AMD fights back. The single-thread test is the clearest AMD victory: 4712 versus 3549, a 24.7% swing. Integer math goes to AMD by a smaller margin, 250683 versus 244642, a 2.4% difference. Data encryption is nearly even, with AMD winning 48268 versus 48007, just 0.5% ahead.

Intel's dominance is most striking in physics and floating-point. The physics test shows a 95% lead (5802 versus 2976), the largest delta in the entire comparison. Floating-point math gives Intel a 25.6% advantage (190917 versus 152003). Prime number finding is 35.4% in Intel's favor (398 versus 294). Extended instructions swing 20.6% to Intel (77619 versus 64345). Random string sorting favors Intel by 18.2% (96112 versus 81318). Data compression is a 12.3% Intel win (966970 versus 860786). The multithread PassMark score gives Intel a 6.7% edge (67754 versus 63474).

The overall benchmark average tells a similar story: the Intel Xeon w7-3555 sits at an average score of 106192, while the AMD EPYC 4565P averages 95764. Both processors rank in the 96th and 97th percentiles of all CPUs, respectively.

Specification Differences

The two processors differ across nearly every major specification category. The Intel Xeon w7-3555 has 28 cores and 56 threads, while the AMD EPYC 4565P has 16 cores and 32 threads. The AMD part runs at a higher base clock (4.30 GHz versus 2.70 GHz) and a higher boost clock (5.70 GHz versus 4.80 GHz). The Intel part consumes 325 W of TDP, while the AMD part draws 170 W.

Process technology separates them clearly: Intel uses a 10 nm node at its own foundry, while AMD uses a 4 nm node at TSMC. The Intel die measures 4x 477 mm², and the AMD die measures 2x 70.6 mm². The AMD part lists 16,630 million transistors; the Intel part does not list a transistor count.

Cache configurations differ in L2 and L3. Both use 80 KB of L1 per core. Intel provides 2 MB of L2 per core, while AMD provides 1 MB per core. Intel's L3 is 75 MB, and AMD's L3 is 64 MB shared.

Memory and PCIe are major differentiators. The Intel Xeon uses an eight-channel memory bus with 307.2 GB/s bandwidth, while the AMD EPYC uses a dual-channel bus with 89.6 GB/s. The Intel part offers 112 PCIe Gen 5 lanes, compared to 24 on the AMD part. Both support DDR5 and ECC memory.

The AMD EPYC includes Radeon integrated graphics; the Intel Xeon has none. The socket types differ (Intel Socket 4677 versus AMD Socket AM5). The Intel part launched on 2024-08-23, while the AMD part launched on 2025-05-12. The Intel launch MSRP is $2339, and the AMD launch MSRP is $589. Neither processor has an unlocked multiplier.