CPU Comparison

The Intel Xeon 6505P and AMD EPYC 7313P are both 1P server/workstation processors aimed at similar sockets, but the benchmark data reveals they are tuned for very different workloads. The AMD EPYC 7313P wins the majority of head-to-head tests, taking 13 of 17 comparisons, while the Intel Xeon 6505P secures four decisive victories in specific instruction-heavy and floating-point tasks. Both CPUs sit at the 91st percentile among all tested processors, with the Xeon 6505P posting an average benchmark score of 53701 and the EPYC 7313P scoring 53206, making them near-peers in overall performance despite their divergent strengths.

Head-to-Head Benchmarks

The AMD EPYC 7313P dominates the Cinebench suite across the board, and the margin is remarkably consistent. In Cinebench R15, R20, and R23, the EPYC leads by exactly 6.5% in both single-core and multi-core tests. For example, the EPYC scores 34952 in Cinebench R23 multi-core versus 32687 for the Xeon, and 4934 versus 4614 in single-core. This uniform 6.5% delta across all six Cinebench runs suggests a fundamental per-thread efficiency advantage for the Zen 3 architecture in rendering workloads, rather than a scaling issue.

The EPYC's lead extends into PassMark's general-purpose tests. Data compression favors the EPYC by 9%, with scores of 528167 versus 480368. Integer math shows a 17.2% gap (145558 vs 120456), and random string sorting is 16.3% faster on the EPYC (62596 vs 52372). The most lopsided wins for AMD come in data encryption, where the EPYC scores 35727 against 24458, a 31.5% advantage, and in the find prime numbers test, where the EPYC's 346 crushes the Xeon's 217 by 37.3%. The physics test also heavily favors AMD, with the EPYC scoring 4229 versus 2991, a 29.3% difference.

The Intel Xeon 6505P, however, is not without its own territory. The most dramatic win for Intel is in the PassMark single-thread test, where it scores 3187 against the EPYC's 2634, a 21% advantage. This is a striking reversal from the Cinebench single-core results, which favored AMD. The Xeon also leads in floating-point math by 13% (92992 vs 82260) and in extended instructions by 14.4% (37515 vs 32784). These three wins point to a CPU that excels at vectorized, SIMD-style workloads and specific single-threaded operations, even if the EPYC wins the more mainstream rendering benchmarks.

Overall, the head-to-head tally is 13 wins for the EPYC 7313P and 4 for the Xeon 6505P. The average benchmark score difference is minimal, the Xeon edges ahead with 53701 vs 53206, but that aggregate number masks the very different performance profiles. The Xeon's nearest rival, the Intel Core i7-14700F, sits at 53620 (0.2% delta), while the EPYC's closest competitor is the AMD Ryzen 9 7900X at 53288 (-0.2% delta). These comparisons show both chips are competitive with high-end desktop parts, not just server processors.

FAQ

Q: Which CPU is faster in Cinebench R23 multi-core?

A: The AMD EPYC 7313P wins with a score of 34952, which is 6.5% higher than the Intel Xeon 6505P's 32687.

Q: Does the Intel Xeon 6505P win any benchmark by a large margin?

A: Yes, the Xeon wins the PassMark single-thread test by 21% (3187 vs 2634) and also leads in floating-point math by 13% (92992 vs 82260) and extended instructions by 14.4% (37515 vs 32784).

Q: How do the two compare in data encryption performance?

A: The EPYC 7313P is dramatically faster, scoring 35727 versus the Xeon's 24458, a 31.5% advantage. This is the second-largest performance gap in the head-to-head results.

Q: What is the average benchmark score for each processor?

A: The Intel Xeon 6505P has an average benchmark score of 53701, while the AMD EPYC 7313P scores 53206. Both are in the 91st percentile of all CPUs.

Q: Are both processors in the same performance tier?

A: Yes, the data shows they are near-peers. The Xeon's average score is only 0.9% higher than the EPYC's, and both rank at the 91st percentile, though the EPYC wins 13 of the 17 individual head-to-head tests.

Q: Which CPU has a higher boost clock?

A: The Intel Xeon 6505P has a boost clock of 4.10 GHz, which is higher than the EPYC 7313P's 3.70 GHz. This likely contributes to the Xeon's single-thread PassMark win.

Where Each One Wins

The AMD EPYC 7313P is the clear choice for rendering and general compute workloads. Its consistent 6.5% lead across all Cinebench versions, from R15 to R23, makes it the safer pick for 3D rendering, video encoding, and any task that scales with multi-threaded CPU performance. The 31.5% advantage in data encryption and 37.3% lead in prime number finding also make it superior for cryptography, hashing, and scientific computing that relies on integer-heavy operations. The EPYC's wins in integer math (17.2%) and random string sorting (16.3%) solidify its position as the better all-rounder for mixed server workloads.

The Intel Xeon 6505P carves out a narrower but important niche. Its 21% single-thread PassMark victory suggests it will feel snappier in lightly-threaded applications, database queries, or legacy software that doesn't scale well. The 13% floating-point math win and 14.4% extended instructions win point to superiority in scientific simulation, financial modeling, and any workload that uses AVX-512 style vector instructions. For users running specific engineering or analytics software that leverages these instruction sets, the Xeon could be decisively faster despite losing the overall benchmark war.

The multithread PassMark test shows the EPYC ahead by 6.5% (41121 vs 38456), which aligns with its Cinebench results. However, the Xeon's 4.10 GHz boost clock versus the EPYC's 3.70 GHz explains the single-thread discrepancy, Intel's chip simply has higher frequency headroom for bursty single-core tasks.

Specification Differences

The two processors differ substantially in their core configurations. The AMD EPYC 7313P has 16 cores and 32 threads, while the Intel Xeon 6505P has 12 cores and 24 threads. This 4-core advantage for AMD is the primary reason for its multi-threaded wins. The EPYC also has a higher base clock at 3.00 GHz versus the Xeon's 2.20 GHz, though the Xeon's boost clock is higher at 4.10 GHz versus 3.70 GHz. TDP is nearly identical at 155W for the EPYC and 150W for the Xeon.

Memory support is a major differentiator. The Xeon 6505P uses DDR5 with eight-channel support and a massive 409.6 GB/s memory bandwidth, double the EPYC's 204.8 GB/s with DDR4. This memory bandwidth advantage could benefit the Xeon in memory-intensive workloads, though the benchmark data does not show it overcoming the EPYC's core count advantage in most tests. Both support ECC memory. The Xeon offers PCIe Gen 5 with 88 lanes, while the EPYC provides PCIe Gen 4 with 128 lanes, a trade-off between newer generation and more total lanes.

The launch MSRP for the Intel Xeon 6505P is $563, while the AMD EPYC 7313P launched at $913. Both are server/workstation parts with active production status.

Architecture Differences

The Intel Xeon 6505P is built on Granite Rapids architecture using a 5 nm process manufactured by Intel, while the AMD EPYC 7313P uses Zen 3 (Milan) on a 7 nm process from TSMC. The Xeon's cache layout is distinct: 112 KB of L1 per core, 2 MB of L2 per core, and 48 MB of shared L3. The EPYC has 64 KB of L1 per core, 512 KB of L2 per core, and a much larger 128 MB of shared L3 cache. The EPYC's larger L3 cache likely contributes to its wins in data compression and random string sorting, where cache locality matters.

The EPYC 7313P has 16,600 million transistors across a die size of 4x 81 mm², a chiplet design that AMD uses for its server line. The Xeon 6505P does not have transistor or die size data in the records. The Xeon uses an Intel Socket 4710, while the EPYC uses AMD Socket SP3. The EPYC is part of the EPYC 7003 series and was released on March 14, 2021, while the Xeon 6505P is from the Xeon 6 (Granite Rapids-SP) generation, released on February 23, 2025, a four-year gap that explains Intel's newer process node.

The Xeon has no integrated graphics, and the EPYC's integrated graphics field is null, so neither offers an iGPU. Both have locked multipliers. The Xeon's part number is SRVU7, while the EPYC's is 100-000000339100-100000339WOF.

The Verdict

The data makes the choice workload-dependent. If you prioritize raw multi-threaded performance for rendering, encryption, or general server tasks, the AMD EPYC 7313P is the clear winner, it claims 13 of 17 head-to-head benchmarks, including all six Cinebench tests with a consistent 6.5% margin, and delivers 37.3% faster prime number finding. The EPYC's 16 cores versus 12, combined with its larger 128 MB L3 cache, give it a structural advantage that the Xeon cannot overcome in most real-world server applications.

However, if your primary workload relies on floating-point math, extended instruction sets, or specific single-threaded operations, the Intel Xeon 6505P is the better pick. Its 21% single-thread PassMark win, 13% floating-point advantage, and 14.4% extended instructions lead indicate that the Xeon will outperform in scientific computing, financial analytics, and software that can leverage its newer 5 nm process and higher 4.10 GHz boost clock. The Xeon's double memory bandwidth (409.6 GB/s vs 204.8 GB/s) also makes it the superior choice for memory-bandwidth-bound tasks, even if the benchmarks don't show it dominating across the board.

Both processors are tied at the 91st percentile, and their average benchmark scores are within 1% of each other (53701 vs 53206). The EPYC 7313P is the safer default for most buyers due to its broader benchmark wins, while the Xeon 6505P is a specialized tool for specific vectorized workloads. Choose based on your application mix, not the aggregate score.