Intel Xeon w9-3575X

The Intel Xeon w9-3575X is a 44-core, 88-thread workstation processor built on the Sapphire Rapids architecture, occupying the 98th percentile of all CPUs in the benchmark database. It is a top-tier part with an average benchmark score of 144,323, placing it in direct competition with the highest-performing server and workstation chips available today. The data indicates a processor engineered for extreme multi-threaded throughput, though its single-thread capabilities are also notably strong.

Benchmark Performance

Benchmark results position the Xeon w9-3575X at the absolute apex of the performance curve. In the database, it achieves a 98th percentile ranking across all CPUs, indicating that it outperforms 98% of all tested processors. Its average benchmark score of 144,323 is the central reference point for comparison.

The processor demonstrates exceptional scaling in multi-threaded workloads. In Cinebench R23, it scores 70,837 points in the multi-core test, a figure that highlights its ability to sustain high throughput across all 44 cores. The Cinebench R20 multi-core score of 29,751 and the R15 multi-core score of 7,140 follow the same trend, showing strong performance across different versions of the benchmark. PassMark multi-thread testing yields a score of 83,338, further corroborating its multi-core dominance.

Specific computational tasks reveal the processor's strengths. In PassMark integer math, it scores 298,224, while floating-point math reaches 273,398. Extended instruction set performance is also substantial at 109,843. Data encryption and compression scores are 62,258 and 1,219,584, respectively, indicating robust capabilities for security-related and data-heavy workloads. The physics score of 6,836 and prime number finding score of 687 are also high, reflecting strong computational throughput.

Single-thread performance is not neglected. Cinebench R23 single-core is not listed in the data, but Cinebench R20 single-core scores 4,200, and R15 single-core scores 1,008. PassMark single-thread testing yields 3,672. These scores indicate a high-frequency design that can handle lightly-threaded tasks effectively, a key advantage for a workstation processor that must run a mix of legacy and modern applications.

The data shows that the w9-3575X is not merely a server part with high core counts; it is a balanced performer. The gap between its multi-core and single-core scores is consistent with a processor that uses a high boost clock of 4.80 GHz to maintain responsiveness in single-threaded tasks, while the 44 cores provide immense parallel throughput. This combination ensures that it excels in both rendering and interactive workloads.

Power and Thermals

The Xeon w9-3575X carries a TDP of 340 watts. This thermal design power classification places it firmly in the high-performance workstation segment, requiring substantial cooling infrastructure. The data does not specify a cooler size, but a 340W TDP implies that a capable air cooler or a robust liquid cooling solution is necessary to maintain sustained performance under full load.

The base clock of 2.20 GHz and boost clock of 4.80 GHz span a wide frequency range. The large delta between base and boost suggests that the processor can aggressively scale frequency for burst workloads, but the 340W TDP is the binding constraint for sustained multi-threaded operation. In long-duration rendering or simulation tasks, the processor will likely settle near its base clock to stay within the power envelope, while shorter bursts can hit the 4.80 GHz boost ceiling.

For a system integrator, the 340W TDP dictates the power delivery and cooling design. The motherboard must support the power draw, and the chassis must be able to dissipate the heat generated. The data does not provide specific thermal measurements, but the TDP class is a clear indicator that this is not a mainstream desktop processor; it is a part for professional workstations where power and cooling are not primary constraints.

The process node is 10 nm, fabricated by Intel. This manufacturing technology is a factor in the processor's power efficiency, though the high core count and clock speeds still result in the 340W TDP. The die size is 4x 477 mm², a large multi-die design that contributes to the overall power characteristics. Users should plan for a system that can handle the thermal output of a 340W processor, which typically means high-end tower coolers or liquid cooling loops.

How It Compares

AMD EPYC 7643P: The w9-3575X trails the EPYC 7643P by a razor-thin margin of 0.3% in average benchmark score. This is effectively a statistical tie. The EPYC 7643P scores 144,824, while the Xeon scores 144,323. In practice, the performance difference between these two processors is negligible, and the choice will come down to platform features and software compatibility rather than raw speed.

AMD Ryzen 9 PRO 9965X3D: The Xeon w9-3575X leads this AMD part by 0.4%. The Ryzen 9 PRO 9965X3D scores 143,735 against the Xeon's 144,323. The Xeon's advantage is small but consistent. This comparison is notable because the Ryzen part includes 3D V-Cache technology, which typically boosts gaming performance; the fact that the Xeon still edges ahead in average score suggests that its 44 cores provide a broader performance base across all benchmark types.

Intel Xeon 6732P: The w9-3575X is 0.6% ahead of this Intel rival. The Xeon 6732P scores 143,444. This is a close intra-Intel comparison, showing that the w9-3575X holds a slight edge in the average of all tested workloads. The performance delta is small enough that differences in specific application optimizations could swing the result either way.

Intel Xeon 674X: The w9-3575X leads the Xeon 674X by 0.9%. The 674X scores 143,103. This is the largest margin among the nearest rivals, but it remains a single-digit percentage difference. The data suggests that the w9-3575X is at the top of a very tightly clustered group of high-end processors, where the average score difference between first and fourth place is less than 2%.

FAQ

Q: What is the launch MSRP of the Intel Xeon w9-3575X?

A: The launch MSRP is $3789.

Q: How many cores and threads does the processor have?

A: It has 44 cores and 88 threads, enabling 88 concurrent processing threads.

Q: What is the maximum memory bandwidth supported?

A: The processor supports eight-channel DDR5 memory with a bandwidth of 307.2 GB/s.

Q: Does the processor have integrated graphics?

A: No, the integrated graphics is listed as N/A, meaning a discrete GPU is required for display output.

Q: What is the boost clock speed?

A: The boost clock speed is 4.80 GHz, with a base clock of 2.20 GHz.

Q: What socket does this processor use?

A: It uses Intel Socket 4677, which is specific to the Xeon W workstation platform.

Single-Thread vs Multi-Thread Behavior

The performance split between single-threaded and multi-threaded workloads is a defining characteristic of the Xeon w9-3575X. The data shows a processor that is exceptionally strong in both domains, but the multi-thread performance is the headline feature. With 44 cores and 88 threads, the processor can execute a massive number of parallel tasks simultaneously. Cinebench R23 multi-core score of 70,837 is roughly 17 times higher than the R15 single-core score of 1,008, though these are different benchmark versions.

For real-world workloads, this means that applications which can utilize many threads will see enormous performance gains. Video rendering, 3D simulation, scientific computing, and code compilation are all workloads that scale well with core count. The PassMark multi-thread score of 83,338 versus the single-thread score of 3,672 illustrates the scaling potential; the multi-thread score is over 22 times higher, indicating that the processor is effectively utilizing nearly all of its 44 cores in this test.

However, single-thread performance is not a weak point. The Cinebench R20 single-core score of 4,200 and PassMark single-thread score of 3,672 are strong numbers for any processor. This is important because many applications, including some professional tools, are still single-threaded or lightly-threaded. The high boost clock of 4.80 GHz ensures that these workloads run at competitive speeds. The result is a processor that does not force a compromise: it leads in multi-threaded tasks while remaining highly capable in single-threaded scenarios.

The practical implication is that the w9-3575X is a versatile processor. A user can run a complex simulation across all 88 threads and then switch to a single-threaded legacy application without experiencing a slowdown. The data indicates that the processor's architecture—combining a high core count with a high boost clock—is designed to handle mixed workloads efficiently.

Platform and Compatibility

The Xeon w9-3575X is built for the Intel Socket 4677 platform, which is the company's workstation-grade socket for the Sapphire Rapids generation. This platform is distinct from mainstream desktop sockets, requiring a motherboard specifically designed for Xeon W processors. The socket supports the processor's 340W TDP, which is higher than any mainstream desktop chip.

Memory support is extensive. The processor features eight-channel DDR5 memory, providing a theoretical bandwidth of 307.2 GB/s. This high bandwidth is crucial for memory-intensive workloads such as large data sets, virtual machines, and high-resolution rendering. ECC memory is supported, which is essential for workstation and server environments where data integrity is paramount.

PCIe connectivity is a major strength. The processor provides 112 PCIe Gen 5 lanes (CPU only). This allows for a massive number of high-speed expansion cards, including multiple GPUs, NVMe storage arrays, and network cards. The Gen 5 specification doubles the bandwidth per lane compared to Gen 4, ensuring that the platform is not a bottleneck for the fastest available peripherals.

The upgrade path is defined by the LGA 4677 socket. The production status is listed as "Active," meaning the processor is currently in production. The unlocked multiplier (multiplierUnlocked: true) indicates that the processor supports overclocking, a feature that is somewhat unusual for a server-class chip. This allows users to push the boost clock beyond the factory 4.80 GHz if their cooling solution permits. The platform is designed for professional workstations, and the combination of eight-channel DDR5, 112 PCIe Gen 5 lanes, and ECC support positions it as a top-tier platform for high-end computing.

Who Should Consider It

The Xeon w9-3575X is aimed squarely at professionals who require maximum multi-threaded performance. The data shows that it is a leader in this regard, sitting at the 98th percentile of all CPUs. For users whose work involves rendering, simulation, or data processing, the 44 cores and 88 threads will deliver substantial reductions in compute time compared to lower-core-count processors.

Content creators working with video editing, 3D animation, or visual effects will benefit from the high multi-core scores. Cinebench R23 multi-core score of 70,837 indicates strong performance in 3D rendering applications. The PassMark integer and floating-point math scores of 298,224 and 273,398, respectively, are also strong indicators for scientific computing and financial modeling tasks.

For gaming, the single-thread score is relevant. The PassMark single-thread score of 3,672 and the high boost clock of 4.80 GHz mean that gaming performance will be competitive, though the primary market is not gaming. The processor's high core count does not hinder gaming, but the lack of integrated graphics means a discrete GPU is mandatory. The 112 PCIe Gen 5 lanes allow for multiple GPUs, which is beneficial for gaming setups that also require capturing or streaming.

Office and general productivity workloads will not fully utilize the processor's capabilities, but the high single-thread performance ensures that such tasks are handled with ease. The data does not suggest this is an efficient choice for basic office work, as the 340W TDP and platform costs imply a professional use case. The processor is best suited for users who can consistently leverage its 88 threads, such as engineers running simulations, data scientists processing large datasets, or animators rendering complex scenes. The high memory bandwidth of 307.2 GB/s further supports these memory-intensive workloads.

Architecture and Design

The Xeon w9-3575X is built on the Sapphire Rapids architecture, which is Intel's server and workstation platform for the 10 nm process node. The processor is manufactured by Intel at the 10 nm node, a mature process that balances performance and power efficiency. The die size is substantial at 4x 477 mm², indicating a multi-die design with four separate chiplets. This modular approach allows Intel to produce high-core-count processors efficiently.

The core layout features 44 cores and 88 threads, with hyper-threading enabled on each core. The cache hierarchy is deep: each core has 80 KB of L1 cache and 2 MB of L2 cache, while a shared L3 cache of 97.5 MB spans the entire processor. The large L3 cache is critical for workloads that access large data sets, as it reduces the need to fetch data from system memory.

The memory controller supports eight-channel DDR5 memory, yielding a bandwidth of 307.2 GB/s. This is a key architectural feature, as the memory bandwidth is often a bottleneck for high-core-count processors. The 112 PCIe Gen 5 lanes are provided directly by the CPU, ensuring high-speed connectivity to GPUs and storage without needing a separate chipset.

The processor's part number is SRN72, and it was released on 2024-08-23. The production status is "Active," confirming that it is a current product. The codename, Sapphire Rapids, is the architectural generation, which is the basis for the Xeon W series. The 10 nm process node and the large die size are the most significant physical characteristics, and they directly influence the 340W TDP. The unlocked multiplier is an architectural feature, as it allows the base clock to be adjusted, though the boost clock is already high at 4.80 GHz. Overall, the architecture is designed for maximum throughput, and the data confirms that it delivers on that promise.