AMD EPYC 7642 vs Intel Xeon 6527P Comparison

The AMD EPYC 7642 and Intel Xeon 6527P represent two distinct approaches to server processing: the AMD part leverages a 48-core, 96-thread Zen 2 design from the EPYC 7002 series, while the Intel chip is a 24-core, 48-thread Granite Rapids-SP part from the Xeon 6 family. Benchmark results show a clear split: Intel wins 14 of the 17 head-to-head tests, but AMD takes decisive victories in specific data-handling workloads. The EPYC 7642 posts an average benchmark score of 124,006 against the Xeon 6527P’s 115,190, yet the Intel part’s wins are often by large margins. Both CPUs sit in the 97th percentile of all processors, indicating top-tier placement, but their respective strengths dictate very different deployment scenarios.

Where Each One Wins

The Intel Xeon 6527P dominates the Cinebench suite across the board. In Cinebench R15 multicore, it scores 6,378 against the EPYC’s 5,037, a 21% advantage. The same 21% delta appears in R20 multicore (26,576 vs 20,989) and R23 multicore (63,278 vs 49,975). Single-core results are even more lopsided: the Xeon leads by 21% in R15 (900 vs 711), R20 (3,751 vs 2,963), and R23 (8,933 vs 7,055). This pattern extends to PassMark multithread, where Intel wins 74,445 to 58,795 (21% ahead), and PassMark physics, where the 8,037 score crushes AMD’s 5,098 by 36.6%. The Xeon also takes PassMark single-thread with 3,539 versus 2,052, a 42% margin that reflects its higher base clock of 3.00 GHz and boost of 4.20 GHz.

The AMD EPYC 7642 wins where its core count and cache architecture shine. PassMark data compression shows AMD at 1,195,584 versus Intel’s 1,030,818, a 16% lead. Data encryption is the biggest AMD victory: 86,397 against 60,333, a 43.2% gap. Integer math also favors AMD, 305,303 to 268,985 (13.5% ahead). These three wins align with the EPYC’s 48 cores, 96 threads, and 256 MB shared L3 cache. The Xeon counters with 144 MB L3 and 2 MB L2 per core, but that does not compensate in these specific workloads.

For the remaining tests, Intel edges ahead. Extended instructions go to Intel 71,600 to 68,841 (3.9% ahead). Prime numbers are close: Intel 508 vs AMD 496 (2.4% lead). Floating-point math favors Intel 195,005 to 181,887 (6.7% ahead). Random string sorting goes to Intel 131,597 vs 114,871 (12.7% lead). The overall win count—14 for Intel, 3 for AMD—tells the story of a processor that wins most tests, but the magnitude of AMD’s encryption and compression wins suggests they matter more in specific server roles.

The Verdict

Choose the Intel Xeon 6527P for general-purpose compute, rendering, and single-threaded or lightly threaded workloads. Its Cinebench R23 multicore score of 63,278 is 21% higher than the EPYC’s 49,975, and the 42% single-thread advantage (3,539 vs 2,052 in PassMark) makes it the better fit for latency-sensitive tasks. The 255 W TDP and 4.20 GHz boost clock support this profile, though the EPYC’s 225 W TDP offers lower peak power. The Xeon’s 409.6 GB/s memory bandwidth, double the EPYC’s 204.8 GB/s, further aids memory-bound applications. Its launch MSRP is $2878.

Choose the AMD EPYC 7642 for data compression, encryption, and integer-heavy workloads. The 43.2% lead in data encryption (86,397 vs 60,333) and 16% lead in compression (1,195,584 vs 1,030,818) are substantial. The 48 cores and 96 threads provide more parallel capacity than the Xeon’s 24 cores and 48 threads, which matters for high-concurrency database or analytics tasks. The EPYC’s 256 MB L3 cache is 78% larger than the Xeon’s 144 MB, explaining its integer math advantage (305,303 vs 268,985). For environments where encryption and compression dominate, the AMD part is the clear pick despite losing most other benchmarks.

The data does not support a universal winner. The Xeon 6527P wins more tests, but the EPYC 7642 wins the tests that matter for specific data-centric workloads. The Xeon’s 42% single-thread lead and 21% multicore lead in Cinebench make it the safer general-purpose choice, while the EPYC’s encryption and compression wins make it specialized but powerful.

Head-to-Head Benchmarks

The largest Intel wins are in PassMark single-thread and physics. The Xeon scores 3,539 in single-thread against AMD’s 2,052, a 42% delta. This aligns with its higher clocks—3.00 GHz base and 4.20 GHz boost versus AMD’s 2.40 GHz base and 3.40 GHz boost. In PassMark physics, Intel leads 8,037 to 5,098, a 36.6% margin, reflecting better per-core efficiency. Cinebench tests show consistent 21% deltas: R15 multicore (6,378 vs 5,037), R20 multicore (26,576 vs 20,989), and R23 multicore (63,278 vs 49,975). The same 21% appears in every single-core Cinebench test.

The AMD wins are concentrated in data processing. Data encryption shows the biggest gap: 86,397 vs 60,333, a 43.2% lead. This is likely due to the EPYC’s 48 cores handling parallel encryption algorithms more effectively. Data compression follows with 1,195,584 vs 1,030,818 (16% ahead). Integer math rounds out the wins at 305,303 vs 268,985 (13.5% ahead). These three victories are not marginal—they are substantial enough to justify the EPYC in encryption-heavy server roles.

The close tests reveal nuances. Extended instructions go to Intel by just 3.9% (71,600 vs 68,841), and prime numbers by 2.4% (508 vs 496). Floating-point math favors Intel by 6.7% (195,005 vs 181,887). Random string sorting shows Intel ahead by 12.7% (131,597 vs 114,871). These smaller deltas indicate that for mixed workloads, the Xeon holds a modest but consistent edge, while the EPYC’s advantages are more pronounced in its niche areas.

FAQ

Q: Which CPU has better single-core performance?

A: The Intel Xeon 6527P wins every single-core test by 21% to 42%. PassMark single-thread shows 3,539 vs 2,052 (42% ahead), while Cinebench R23 single-core shows 8,933 vs 7,055 (21% ahead).

Q: What causes the EPYC 7642’s large lead in data encryption?

A: The EPYC 7642 scores 86,397 in PassMark data encryption versus the Xeon’s 60,333, a 43.2% advantage. This correlates with its 48 cores and 96 threads versus the Xeon’s 24 cores and 48 threads, allowing more parallel encryption operations.

Q: How do the two CPUs compare in memory bandwidth?

A: The Intel Xeon 6527P supports DDR5 with 409.6 GB/s bandwidth, while the AMD EPYC 7642 uses DDR4 with 204.8 GB/s. The Xeon offers exactly double the memory bandwidth.

Q: Which CPU has more cache?

A: The AMD EPYC 7642 has 256 MB shared L3 cache, compared to the Intel Xeon 6527P’s 144 MB shared L3. The Xeon has larger per-core L2 cache (2 MB vs 512 KB) and L1 cache (112 KB vs 96 KB per core).

Q: What are the core and thread counts?

A: The AMD EPYC 7642 has 48 cores and 96 threads. The Intel Xeon 6527P has 24 cores and 48 threads. The AMD part has exactly double the cores and threads.

Q: Which processor has a higher boost clock?

A: The Intel Xeon 6527P boosts to 4.20 GHz, while the AMD EPYC 7642 boosts to 3.40 GHz. The Xeon’s base clock is also higher at 3.00 GHz versus 2.40 GHz.

Architecture Differences

The two processors come from different foundries and process nodes. The AMD EPYC 7642 uses a 7 nm process from TSMC, while the Intel Xeon 6527P uses a 5 nm process from Intel. The AMD chip is built on Zen 2 architecture (codename Rome) from the EPYC 7002 series, whereas the Intel part uses Granite Rapids architecture from the Xeon 6 family. These architectural choices drive the performance differences.

Core and cache configurations differ significantly. The AMD part packs 48 cores and 96 threads, with 96 KB L1 and 512 KB L2 per core, plus a 256 MB shared L3. The Intel part has 24 cores and 48 threads, with 112 KB L1 and 2 MB L2 per core, plus 144 MB shared L3. The AMD’s larger L3 (256 MB vs 144 MB) supports its wins in data compression and integer math, while the Intel’s larger per-core L2 (2 MB vs 512 KB) helps single-thread performance.

Memory and I/O also diverge. The EPYC 7642 supports DDR4 memory with an eight-channel bus and 204.8 GB/s bandwidth. The Xeon 6527P supports DDR5 with an eight-channel bus and 409.6 GB/s bandwidth, doubling the AMD part’s bandwidth. PCIe generations differ: the AMD uses Gen 4, while the Intel uses Gen 5 with 88 lanes (CPU only). Both support ECC memory, but the Xeon has no integrated graphics while the EPYC also lacks integrated graphics.

Socket and power specifications differ. The AMD uses AMD Socket SP3, while the Intel uses Intel Socket 4710. The EPYC has a 225 W TDP, while the Xeon has a 255 W TDP. The Intel part has a higher die size (598 mm²) compared to the AMD’s 74 mm², though the AMD’s transistor count is listed at 3,800 million. Release dates show the EPYC launched in August 2019, while the Xeon launched in February 2025, a gap that explains the newer process node and DDR5 support on the Intel side.