Intel Xeon 6774P vs Intel Xeon w9-3595X Comparison

Head-to-Head Benchmarks

The benchmark data shows a decisive overall victory for the Intel Xeon 6774P, which wins 12 of the 14 recorded head-to-head tests. The margin is not uniform, however, and the single area where the Xeon w9-3595X strikes back is significant for certain workloads.

In multi-threaded rendering, the Xeon 6774P is consistently ahead. In Cinebench R15, R20, and R23 multicore tests, it scores 9660, 40251, and 95836 respectively, compared to 8497, 35407, and 84304 for the Xeon w9-3595X. That translates to a 13.7% lead in each of those three tests, a consistent advantage that points to a structural difference in core configuration rather than a clock-speed quirk.

The gap widens considerably in several Passmark workloads. The most dramatic difference appears in the physics test, where the Xeon 6774P scores 16023 versus 5842 for the w9-3595X, a 174.3% advantage. This is the single largest delta in the entire head-to-head set, and it suggests the 6774P has a substantially more efficient architecture for handling the complex, parallel calculations typical of physics simulations.

Prime number finding shows another massive disparity. The Xeon 6774P records 1264, while the Xeon w9-3595X manages only 580, a 117.9% lead. This is a raw integer throughput test that heavily favors the newer design. Similarly, random string sorting sees the 6774P at 262417 against 190745, a 37.6% edge, and data compression shows 2309868 versus 1831962, a 26.1% advantage.

Encryption and extended instruction workloads also favor the 6774P, with 24.7% and 24.2% leads respectively. Integer math shows a 25.3% advantage, and floating-point math a 22.8% lead. The multithread Passmark score is closer, with the 6774P at 112749 versus 99576, a 13.2% advantage.

The single bright spot for the Xeon w9-3595X is in single-threaded performance. In the Passmark single-thread test, it scores 3720 against 3047 for the 6774P, a delta of -18.1% from the 6774P's perspective, meaning the w9-3595X is 18.1% faster. This is a meaningful win for tasks that cannot be parallelized, and it reflects the w9-3595X's higher boost clock.

When looking at overall averages, the Xeon 6774P posts an average benchmark score of 300372, while the Xeon w9-3595X averages 209881. That is a substantial overall gap, roughly 43% higher for the 6774P, driven by its dominance in the majority of the workload mix.

Architecture Differences

The two processors come from different Intel server platforms, and the architectural split explains nearly every benchmark delta observed. The Xeon 6774P is built on Granite Rapids, a 5 nm process, while the Xeon w9-3595X uses Sapphire Rapids on a 10 nm node. This process advantage alone gives the 6774P a significant efficiency and density edge.

Core counts differ, with the 6774P offering 64 cores and 128 threads, versus 60 cores and 120 threads on the w9-3595X. That is a modest 4-core advantage for the 6774P, but it is paired with a much larger cache hierarchy. The 6774P has 112 KB of L1 per core, 2 MB of L2 per core, and a massive 336 MB of shared L3 cache. The w9-3595X has 80 KB of L1 per core, the same 2 MB of L2 per core, but only 112.5 MB of L3 cache total. The 6774P's L3 is roughly three times larger, which directly benefits data-heavy workloads and explains the large wins in compression, sorting, and encryption.

Die layout also differs. The 6774P uses a 2x 598 mm² die configuration, while the w9-3595X uses a 4x 477 mm² design. This reflects the newer, more integrated Granite Rapids design versus the older Sapphire Rapids multi-die approach.

Memory bandwidth is another clear differentiator. The 6774P supports eight-channel DDR5 with a peak bandwidth of 409.6 GB/s, while the w9-3595X also has eight-channel DDR5 but caps out at 307.2 GB/s. That 33% bandwidth advantage for the 6774P is critical for memory-bound server workloads.

PCIe lane counts also favor the 6774P, with 136 Gen 5 lanes available from the CPU, versus 112 lanes on the w9-3595X. Both support ECC memory and lack integrated graphics. The w9-3595X does have an unlocked multiplier, making it a workstation-oriented part for overclocking, while the 6774P is locked.

Clock speeds tell a different story. The w9-3595X has a base clock of 2.00 GHz but a boost clock of 4.80 GHz, significantly higher than the 6774P's 2.50 GHz base and 3.90 GHz boost. That higher boost clock is what drives the w9-3595X's single-thread win, but it comes at a cost: the w9-3595X has a TDP of 385 watts, higher than the 6774P's 350 watts, despite having fewer cores and a smaller cache.

The release dates also reflect the generational gap. The 6774P launched in May 2025, while the w9-3595X arrived in August 2024. The 6774P is part of the Xeon 6 family on Granite Rapids-SP, whereas the w9-3595X belongs to the Xeon W line on Sapphire Rapids.

Where Each One Wins

The Xeon 6774P is the clear choice for multi-threaded, data-intensive server workloads. Its 64 cores, 336 MB of L3 cache, and 409.6 GB/s memory bandwidth make it dominant in any task that scales across cores or relies heavily on cached data. The benchmark data supports this: it wins in physics simulation by a 174.3% margin, prime number finding by 117.9%, and random string sorting by 37.6%. For virtualization, database workloads, large-scale data processing, and scientific computing, the 6774P is the stronger part.

The Xeon w9-3595X wins in exactly one recorded category: single-threaded performance. Its 18.1% lead in the Passmark single-thread test, driven by the 4.80 GHz boost clock, makes it the better choice for workloads that are latency-sensitive or poorly parallelized. This includes many legacy applications, certain database operations that are inherently serial, and software development tasks like compilation stages that cannot fully utilize multiple cores. The unlocked multiplier also allows for manual overclocking, which could extend that single-thread lead further, though the data does not record any overclocked results.

For mixed workloads, the overall average score of 300372 for the 6774P versus 209881 for the w9-3595X suggests the 6774P is more versatile. The w9-3595X's advantage is narrow in scope, and even in multi-threaded Cinebench tests where the w9-3595X is respectable, it trails by 13.7% consistently. The w9-3595X does have a lower launch MSRP of $5889 compared to $6760 for the 6774P, which may factor into procurement decisions, but the performance spread is substantial.

The Verdict

The data points to a clear hierarchy. The Intel Xeon 6774P is the superior processor for nearly all measured workloads, winning 12 of 14 head-to-head tests and posting an average benchmark score 43% higher than the w9-3595X. Its architectural advantages, including a 5 nm process, 64 cores, 336 MB of L3 cache, and 409.6 GB/s memory bandwidth, translate directly into measurable performance gains across rendering, compression, encryption, and math-heavy tasks.

The Intel Xeon w9-3595X is not without merit, but its strengths are narrowly focused. The 18.1% single-thread lead makes it the better option for serial workloads, and its unlocked multiplier offers flexibility for enthusiasts. However, it does not match the 6774P in any multi-threaded benchmark, and its 385-watt TDP is higher despite delivering less overall performance.

Choosing between them depends on the workload profile. For data centers running parallel, memory-hungry applications, the 6774P is the clear pick. For workstation users who prioritize single-thread responsiveness and may benefit from overclocking, the w9-3595X has a role, but it is a niche one in the face of the 6774P's comprehensive lead.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon 6774P has 64 cores and 128 threads, while the Intel Xeon w9-3595X has 60 cores and 120 threads.

Q: What is the difference in single-threaded performance?

A: The Xeon w9-3595X wins the Passmark single-thread test with a score of 3720, which is 18.1% higher than the 3047 scored by the Xeon 6774P.

Q: How do the two processors compare in Cinebench R23 multicore?

A: The Xeon 6774P scores 95836, which is 13.7% higher than the 84304 scored by the Xeon w9-3595X.

Q: What is the largest performance gap in the head-to-head data?

A: The largest gap is in the Passmark physics test, where the Xeon 6774P scores 16023, which is 174.3% higher than the 5842 scored by the Xeon w9-3595X.

Q: Which processor has a higher boost clock?

A: The Xeon w9-3595X has a boost clock of 4.80 GHz, while the Xeon 6774P has a boost clock of 3.90 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the Xeon 6774P and the Xeon w9-3595X support ECC memory, and both use eight-channel DDR5.