AMD EPYC 7763 vs Intel Xeon 6745P Comparison

Head-to-Head Benchmarks

The recorded head-to-head data for the AMD EPYC 7763 and Intel Xeon 6745P reveals a clear pattern: the AMD part dominates the aggregate workload metrics, while the Intel part claims the single-threaded and specific instruction-set tests. Across the sixteen benchmark entries, the AMD EPYC 7763 wins twelve, while the Intel Xeon 6745P wins four.

The most decisive AMD victories come in the PassMark workloads that scale with core count and cache. In data encryption, the EPYC 7763 scores 121001 against 66665 for the Xeon 6745P, a margin of 81.5%. This is the largest delta in the entire comparison. Integer math shows a 53.4% advantage (516920 versus 336926), and random string sorting is 36.8% ahead (182676 versus 133528). Data compression also favors the AMD chip by 20.4% (1628973 versus 1352801). The physics test adds another 25.5% win (7708 versus 6144), and floating point math is 7.7% ahead (287919 versus 267438).

The Cinebench suite tells a different story in terms of magnitude. Across R15, R20, and R23, the EPYC 7763 wins every multicore and singlecore test, but by very narrow margins. The multicore deltas are consistently 0.5% (7247 versus 7214 in R15, 30198 versus 30062 in R20, 71902 versus 71578 in R23). The singlecore tests are similarly tight: 1023 versus 1018 in R15 (0.5%), 4263 versus 4244 in R20 (0.4%). The PassMark multithread score shows the same pattern, with the AMD part winning 84591 to 84210, a 0.5% edge.

The Intel Xeon 6745P claims its wins in two distinct areas. The PassMark single-thread test (listed twice as single_thread and singlethread) shows the Intel part at 3450 versus 2518, a 27% advantage. The extended instructions test goes to Intel by 9.3% (108326 versus 98294). The find prime numbers test is a narrow Intel win at 681 versus 668, a 1.9% margin.

What the overall benchmark averages reflect is that the EPYC 7763 carries a much higher aggregate score. Its average benchmark score is 179916, while the Xeon 6745P sits at 154858. Both processors place in the 98th percentile among all CPUs in the database. The nearest rivals for the EPYC 7763 include the AMD Ryzen Threadripper PRO 9975WX (average score 182700, 1.5% higher), the AMD EPYC 8534P (185092, 2.8% higher), and the Intel Xeon 6740E (187718, 4.2% higher). The Intel Xeon 6740P sits just below at 176227, which is 2.1% lower. For the Xeon 6745P, the closest competition includes the Intel Xeon 676X (158540, 2.3% higher), the AMD EPYC 9355P (160358, 3.4% higher), and two AMD EPYC parts: the 7663 at 161973 (4.4% higher) and the 9375F at 162497 (4.7% higher). This places the Xeon 6745P at the lower end of its immediate competitive cluster.

Where Each One Wins

The split between the two processors is straightforward when categorized by workload type. The AMD EPYC 7763 is the clear choice for throughput-oriented, multi-threaded, and data-heavy tasks. Its wins in data encryption, integer math, random string sorting, and data compression indicate that it handles cryptographic operations, large integer workloads, and sorting algorithms with substantially higher efficiency. The physics test, which often reflects simulation and constraint-heavy workloads, also favors the AMD part by a wide margin. For users running Cinebench-style rendering or general multithreaded productivity, the EPYC 7763 wins, though the margin is small enough that the difference may be within run-to-run variance.

The Intel Xeon 6745P wins the single-threaded performance category outright. The 27% advantage in the PassMark single-thread test is substantial and suggests that applications relying on low-latency, single-core execution will see a noticeable benefit. The extended instructions win (9.3%) points to workloads that utilize advanced vector or specialized instruction sets, where the newer Intel architecture appears more efficient. Prime number finding, a test that often stresses integer throughput per core, also goes to Intel, but the 1.9% margin is minor.

The data therefore suggests a usage split: AMD for heavily parallel, memory-bandwidth-intensive, and encryption-heavy server workloads; Intel for single-threaded responsiveness and workloads that depend on extended instruction efficiency. The Cinebench results, which are nearly identical, indicate that general rendering performance is not a differentiator between these two parts.

Architecture Differences

The fundamental architectural gap between the two processors is significant. The AMD EPYC 7763 is built on the Zen 3 architecture, codenamed Milan, using a 7 nm process from TSMC. It packs 64 cores and 128 threads. The Intel Xeon 6745P uses the Granite Rapids architecture, also the codename for the generation, on a 5 nm process from Intel, with 32 cores and 64 threads. The core count difference is exactly double in favor of AMD.

Cache configurations differ sharply. The EPYC 7763 has 64 KB of L1 per core, 512 KB of L2 per core, and a shared L3 of 256 MB. The Xeon 6745P has 112 KB of L1 per core, 2 MB of L2 per core, and a shared L3 of 336 MB. On a per-core basis, the Intel part has more L1 and L2, but the AMD part provides a larger shared L3 pool. The die layout also differs: the EPYC 7763 uses eight chiplets of 81 mm² each, while the Xeon 6745P uses two dies of 598 mm² each. The AMD chip packs 33,200 million transistors, while the Intel figure is not recorded in the database.

Memory support is another major split. The EPYC 7763 uses DDR4 with an eight-channel bus and 204.8 GB/s of bandwidth. The Xeon 6745P uses DDR5 with eight channels and 409.6 GB/s of bandwidth, exactly double the AMD figure. Both support ECC memory. PCIe connectivity differs as well: the AMD part offers Gen 4 with 128 lanes (CPU only), while the Intel part offers Gen 5 with 88 lanes (CPU only). The Intel part has no integrated graphics (listed as N/A), and the AMD part also lists none.

Clock speeds favor Intel. The Xeon 6745P has a base clock of 3.10 GHz and a boost clock of 4.30 GHz. The EPYC 7763 has a base of 2.45 GHz and a boost of 3.50 GHz. This explains the Intel single-thread advantage. Power envelopes are close: the AMD part is rated at 280 W TDP, the Intel part at 300 W TDP. The sockets are incompatible (AMD Socket SP3 versus Intel Socket 4710), and neither processor has an unlocked multiplier.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7763 has 64 cores and 128 threads. The Intel Xeon 6745P has 32 cores and 64 threads. The AMD part offers exactly double the core and thread count.

Q: Is the Intel Xeon 6745P faster in single-threaded tests?

A: Yes. The PassMark single-thread score for the Intel part is 3450 versus 2518 for the AMD part, a 27% advantage. This aligns with the Intel part's higher base and boost clocks (3.10 GHz and 4.30 GHz versus 2.45 GHz and 3.50 GHz).

Q: Which processor has higher memory bandwidth?

A: The Intel Xeon 6745P. It supports DDR5 with 409.6 GB/s of bandwidth over an eight-channel bus. The AMD EPYC 7763 supports DDR4 with 204.8 GB/s over eight channels.

Q: How close are the Cinebench multicore scores?

A: They are nearly identical. In Cinebench R23 multicore, the AMD part scores 71902 and the Intel part scores 71578, a 0.5% difference. The same 0.5% margin appears in R15 and R20 multicore tests.

Q: Which processor wins in data encryption?

A: The AMD EPYC 7763 wins decisively. It scores 121001 versus 66665 for the Intel Xeon 6745P, an 81.5% advantage.

Q: What is the average benchmark score difference?

A: The AMD EPYC 7763 has an average benchmark score of 179916, while the Intel Xeon 6745P has an average of 154858. The AMD part is roughly 16% higher in this aggregate metric.

The Verdict

The benchmark data points to a clear recommendation based on workload profile. For server environments that run heavily parallel tasks, encryption, compression, integer math, and sorting operations, the AMD EPYC 7763 is the superior choice. Its wins in these categories are often large, ranging from 20.4% to 81.5%. The 64-core configuration, combined with 256 MB of shared L3 cache, drives these results. The near-tie in Cinebench multicore tests (0.5% margins) suggests that rendering workloads will not differentiate the two, but the AMD part still wins every one of those tests.

For workloads that are latency-sensitive or dependent on single-thread performance, the Intel Xeon 6745P is the better option. The 27% single-thread advantage is substantial and directly attributable to its higher clock speeds. The extended instructions win (9.3%) also indicates a benefit for specialized vectorized code. The higher memory bandwidth (409.6 GB/s versus 204.8 GB/s) is a notable advantage for memory-bound applications, even though the benchmark suite does not show a direct test for that metric.

The production status for both is active. The AMD EPYC 7763 has a launch MSRP of $7890, while the Intel Xeon 6745P has a launch MSRP of $5250. The release dates differ significantly: the AMD part launched in March 2021, and the Intel part launched in February 2025. The database places both in the 98th percentile of all CPUs.

Specification Differences

| Specification | AMD EPYC 7763 | Intel Xeon 6745P |

|---|---|---|

| Cores | 64 | 32 |

| Threads | 128 | 64 |

| Base Clock | 2.45 GHz | 3.10 GHz |

| Boost Clock | 3.50 GHz | 4.30 GHz |

| TDP | 280 W | 300 W |

| Socket | AMD Socket SP3 | Intel Socket 4710 |

| Architecture | Zen 3 | Granite Rapids |

| Process Node | 7 nm | 5 nm |

| Foundry | TSMC | Intel |

| Die Size | 8x 81 mm² | 2x 598 mm² |

| L1 Cache | 64 KB (per core) | 112 KB (per core) |

| L2 Cache | 512 KB (per core) | 2 MB (per core) |

| L3 Cache | 256 MB (shared) | 336 MB (shared) |

| Memory Support | DDR4 | DDR5 |

| Memory Bandwidth | 204.8 GB/s | 409.6 GB/s |

| PCIe | Gen 4, 128 Lanes | Gen 5, 88 Lanes |

| Launch MSRP | $7890 | $5250 |

| Release Date | 2021-03-14 | 2025-02-23 |