Intel Xeon 6520P vs Intel Xeon w7-2595X Comparison

Where Each One Wins

The benchmark split between these two Intel Xeon parts is decisively lopsided, but the two wins for the Intel Xeon 6520P are not trivial. The Xeon w7-2595X takes 15 of 17 recorded head-to-head tests, while the Xeon 6520P wins only 2. However, the nature of those two victories reveals a clear workload division: the 6520P dominates in physics simulation and prime number finding, while the w7-2595X sweeps nearly everything else, from rendering to compression to encryption.

For single-threaded and lightly threaded tasks, the w7-2595X is the clear choice. It wins every Cinebench single-core test by 2.5% to 2.6%, and the PassMark single-thread test by 10.9%. The w7-2595X also leads in PassMark multithread by 2.7%, which is a narrower margin than its Cinebench multicore wins of 2.6% across R15, R20, and R23. This suggests that the w7-2595X's advantage grows when the workload is more complex or memory-sensitive, as seen in its larger wins in data compression (16.8%), data encryption (10.2%), floating point math (24.6%), integer math (22%), and extended instructions (20.2%).

The Xeon 6520P, by contrast, shows a striking specialization. Its PassMark physics score of 7209 versus 2759 for the w7-2595X is a 61.7% advantage, the largest delta in the entire comparison. Similarly, its prime number finding score of 526 versus 259 represents a 50.8% lead. These are not marginal wins; they are category-defining results. Any workload that heavily exercises physics calculations or prime-number algorithms should favor the 6520P despite its overall lower average benchmark score.

The average benchmark scores reflect the overall balance: the w7-2595X sits at 108663 average, while the 6520P sits at 93786, a difference of roughly 15.9%. The w7-2595X also holds a 97th percentile ranking versus the 6520P's 96th percentile among all CPUs. Yet the 6520P's 96th percentile is still a strong showing, and its physics and prime-number wins show that percentile rankings do not capture the full picture.

Architecture Differences

The two processors come from different Intel families and different manufacturing nodes. The Intel Xeon w7-2595X is a Sapphire Rapids part built on Intel's 10 nm process, while the Intel Xeon 6520P is a Granite Rapids part built on Intel's 5 nm process. The 6520P also carries a larger die size of 598 mm², a detail not recorded for the w7-2595X.

Core counts differ: the w7-2595X has 26 cores and 52 threads, while the 6520P has 24 cores and 48 threads. Both are high-core-count workstation or server parts, but the w7-2595X brings two additional cores and four additional threads to the table. Clock speeds also favor the w7-2595X, with a base clock of 2.80 GHz and a boost clock of 4.80 GHz, versus 2.40 GHz base and 4.00 GHz boost for the 6520P. The unlocked multiplier on the w7-2595X further distinguishes it as a more overclocking-friendly part, while the 6520P has a locked multiplier.

Cache configurations show a significant divergence. The w7-2595X has 80 KB of L1 per core, 2 MB of L2 per core, and 48.75 MB of L3. The 6520P has 112 KB of L1 per core, 2 MB of L2 per core, and a much larger 144 MB of shared L3. That 144 MB L3 is nearly three times the w7-2595X's L3, which likely contributes to the 6520P's strong physics and prime-number results, as those workloads can benefit from large, fast cache.

Memory subsystems also differ substantially. The w7-2595X supports DDR5 over a quad-channel bus with 153.6 GB/s of bandwidth. The 6520P supports DDR5 over an eight-channel bus with 409.6 GB/s of bandwidth, a 2.67x bandwidth advantage. Both support ECC memory. PCIe lanes also favor the 6520P: 88 Gen 5 lanes versus 64 Gen 5 lanes for the w7-2595X.

Sockets differ as well. The w7-2595X uses Intel Socket 4677, while the 6520P uses Intel Socket 4710. Both are active production parts with no integrated graphics. The w7-2595X was released on 2024-08-23, while the 6520P followed on 2025-02-23. The w7-2595X has a launch MSRP of $2039, and the 6520P has a launch MSRP of $1295. The w7-2595X's part number is SRN4C, and the 6520P's is SRVNQ.

Head-to-Head Benchmarks

The w7-2595X's cleanest sweep comes in Cinebench. Across R15, R20, and R23, it wins both multicore and single-core tests by 2.6% in all six cases, except for R15 single-core where the margin is 2.5%. The R23 multicore scores are 54863 for the w7-2595X and 53495 for the 6520P, a 2.6% gap. R23 single-core sees 7745 versus 7552, also 2.6%. These are consistent, if modest, leads.

The PassMark suite tells a more dramatic story. The w7-2595X leads by 16.8% in data compression (983046 versus 841518), by 10.2% in data encryption (49782 versus 45188), and by 20.2% in extended instructions (77613 versus 64557). Floating point math shows a 24.6% advantage (202906 versus 162862), and integer math shows a 22% advantage (261384 versus 214288). Random string sorting goes to the w7-2595X by 6.8% (102230 versus 95736). Single-thread PassMark scores favor the w7-2595X by 10.9% (3723 versus 3356), a larger single-threaded gap than Cinebench suggests.

The 6520P's wins are outliers in magnitude. Its PassMark physics score of 7209 is 61.7% higher than the w7-2595X's 2759. Its prime number finding score of 526 is 50.8% higher than 259. No other test in the entire comparison comes close to these margins. The 6520P also narrows the gap in PassMark multithread, losing by only 2.7% (62936 versus 64628), which is nearly identical to its Cinebench multicore deficits.

The delta pattern is telling: the w7-2595X wins most tests by single-digit or low-double-digit percentages, but its wins in floating point, integer, and extended instruction workloads exceed 20%. The 6520P's wins, while fewer, are far larger in relative terms. The combination suggests that the 6520P's architecture is highly optimized for specific computational patterns, while the w7-2595X offers broader, more consistent strength across general-purpose and content-creation workloads.

FAQ

Q: Which CPU wins more benchmark tests?

A: The Intel Xeon w7-2595X wins 15 of 17 head-to-head tests. The Intel Xeon 6520P wins 2.

Q: What are the biggest wins for the Intel Xeon w7-2595X?

A: The largest margins are in floating point math (24.6% ahead), integer math (22% ahead), and extended instructions (20.2% ahead). It also leads in data compression by 16.8% and data encryption by 10.2%.

Q: What are the biggest wins for the Intel Xeon 6520P?

A: The 6520P wins PassMark physics by 61.7% (7209 versus 2759) and PassMark find prime numbers by 50.8% (526 versus 259). These are the two largest deltas in either direction.

Q: How do the Cinebench scores compare?

A: The w7-2595X wins every Cinebench test. In R23 multicore, it scores 54863 versus 53495, a 2.6% lead. In R23 single-core, it scores 7745 versus 7552, also 2.6%. Margins are consistent at 2.5% to 2.6% across all Cinebench tests.

Q: Do the CPUs have different memory bandwidth?

A: Yes. The w7-2595X has quad-channel DDR5 with 153.6 GB/s bandwidth. The 6520P has eight-channel DDR5 with 409.6 GB/s bandwidth. Both support ECC memory.

Q: Which CPU has more cores and threads?

A: The w7-2595X has 26 cores and 52 threads. The 6520P has 24 cores and 48 threads. The w7-2595X also has higher base and boost clocks: 2.80 GHz and 4.80 GHz versus 2.40 GHz and 4.00 GHz.

The Verdict

The data points to a clear overall winner for most workloads: the Intel Xeon w7-2595X. It holds a 15-to-2 win record, a higher average benchmark score (108663 versus 93786), a higher percentile ranking (97th versus 96th), and it wins across rendering, compression, encryption, floating point, integer, and single-threaded tasks. Its two extra cores, four extra threads, and higher clock speeds give it a general-purpose advantage that shows up consistently across the Cinebench and PassMark suites.

The Intel Xeon 6520P is not a straightforward loser, however. Its 144 MB of shared L3 cache, eight-channel memory with 409.6 GB/s bandwidth, and 88 PCIe lanes make it a specialized part. The physics score of 7209 and prime number score of 526 are not just wins; they are dominant wins that no other test in this comparison approaches. For anyone running physics simulations or prime-number-heavy algorithms, the 6520P is the correct choice despite its lower overall average and lower core count.

The w7-2595X should be the default pick for general workstation use, content creation, data compression, encryption, and any mixed workload that does not specifically target the 6520P's physics and prime-number strengths. The 6520P should be chosen when the workload is known to be cache-hungry and physics or prime-number bound, or when the eight-channel memory bandwidth and 88 PCIe lanes matter more than raw core count and clock speed. The w7-2595X is also the only one of the two with an unlocked multiplier, making it the better fit for overclocking-oriented systems. The 6520P's locked multiplier and lower launch MSRP of $1295 versus $2039 for the w7-2595X further position it as a different kind of offering, but the benchmark record shows that the w7-2595X earns its higher price with broader performance.