Quick Verdict
A potent workstation CPU with excellent multi-threaded performance and massive I/O, but high power consumption and cost limit its appeal to users who genuinely need 44 cores and 112 PCIe lanes.
Overview
Launch
2024
Status
LaunchedGeneration
Xeon W-3500 (Sapphire Rapids Refresh)
Market
Workstation
The Intel Xeon w9-3575X is a 44-core, 88-thread workstation processor based on the Sapphire Rapids Refresh architecture, offering 112 PCIe 5.0 lanes, 8-channel DDR5-4800 memory, and up to 4.8 GHz turbo clocks for heavily threaded professional workloads.
With 44 cores and 88 threads, 112 PCIe 5.0 lanes, 8-channel DDR5-4800, and up to 4.8 GHz turbo, the Xeon w9-3575X targets heavy workloads like 3D rendering, simulation, and multi-GPU configurations.
It sits below the 56- and 60-core W9 models but above the earlier W9-3475X, offering a balance of core count, clock speed, and power for high-end single-socket workstations.
Specifications
Performance
Very strong multi-threaded performance for content creation and engineering workloads, with Puget’s W-3500 review showing ~10–15% gains over previous-generation Xeon W-3400 in many heavily threaded tasks.
Excellent for multi-VM workloads thanks to 44 cores, 8-channel memory, and VT-x/VT-d/VT-rp support, though AMD Threadripper PRO often leads at the top end.
Not a gaming CPU; capable of high refresh-rate gameplay but significantly outperformed by modern gaming-focused desktop CPUs at much lower power.
High power consumption (340 W base, up to 408 W turbo) makes it relatively inefficient compared to newer architectures, requiring robust cooling and power delivery.
- •Single-thread performance is good, but not class-leading compared to modern gaming CPUs.
- •Very high power and platform cost for a gaming-focused build.
- •Best used as a workstation CPU that also games, not the reverse.
- •Intel AMX and AVX-512 provide strong CPU-based AI inference and HPC potential.
- •No dedicated AI accelerator like a discrete GPU or NPU, so large-scale training still requires GPUs.
- •Well-suited for inference, scientific computing, and some HPC workloads that can leverage AMX/BF16.
Architecture
Intel 7 (10nm-class Enhanced SuperFin)
Process Node
Sapphire Rapids Refresh
Codename
44C / 88T
Core Config
97.5 MB
L3 Cache
340 W
TDP
Architecture Overview
The Xeon w9-3575X uses the Sapphire Rapids Refresh architecture, an evolution of the original Sapphire Rapids server platform optimized for single-socket workstations. It keeps the same compute and I/O tile design but increases core counts and cache compared to the earlier W-3400 series, while maintaining the 112-lane PCIe 5.0 and 8-channel DDR5 memory subsystem.
CPU Design
The CPU is a multi-chiplet package using four XCC (extreme core count) compute tiles connected via 2.5D Embedded Multi-die Interconnect Bridges. Each tile contains up to 15 Golden Cove P-cores, and the w9-3575X exposes 44 of them as a homogeneous core array with no E-cores, resulting in 88 threads with Hyper-Threading.
Memory Subsystem
An integrated memory controller supports 8 channels of DDR5 ECC RDIMMs at up to 4800 MT/s, with up to 2 DIMMs per channel and a maximum capacity of 4 TB. This configuration is identical to the W-3400 generation and is validated for high reliability and RAS features in workstation and server environments.
PCIe & I/O
The processor provides up to 112 PCIe 5.0 lanes from the CPU, with one PCIe controller typically reserved for DMI 4.0 to the W790 chipset. This allows multiple x16 GPUs, high-speed NVMe storage, and network cards without running out of lanes, a key advantage over mainstream desktop platforms.
Overclocking
Like other Xeon W-3400/3500 X-series parts, the w9-3575X is unlocked for overclocking on Intel W790 motherboards. This allows adjusting multipliers, power limits, and memory timings beyond stock settings, though in practice overclocking is limited by the already high base power and thermal output of 44 cores.
- 8 additional cores and 16 more threads (36C/72T → 44C/88T)
- 15 MB more L3 cache (82.5 MB → 97.5 MB)
- Higher base power (300 W → 340 W) and turbo power (360 W → 408 W) for increased multi-thread headroom
- Same 112 PCIe 5.0 lanes and 8-channel DDR5-4800, but with better multi-threaded performance
Key Highlights
- 44 cores and 88 threads for heavily parallel workloads
- 112 PCIe 5.0 lanes for multi-GPU and high-speed storage
- 8-channel DDR5-4800 with up to 4 TB capacity
- Intel AMX and AVX-512 for AI and HPC
- Unlocked multiplier for overclocking on W790
- Strong workstation RAS features (ECC, vPro Enterprise, VT-rp)
- Very high power consumption (340 W base, up to 408 W turbo)
- Expensive CPU and platform (W790 motherboard, 8-channel DDR5)
- No integrated graphics; discrete GPU required
- Outperformed by AMD Threadripper PRO 7000 WX in many multi-threaded workloads
- Limited upgrade path beyond the Xeon W-3500 family on this platform
History
The Xeon w9-3575X launched in August 2024 as part of Intel’s Xeon W-3500 workstation refresh, codenamed Sapphire Rapids Refresh. This family updated the existing Xeon W-3400 platform by adding more cores and cache while keeping the same LGA4677 socket and W790 chipset, allowing existing workstation vendors to upgrade their CPU offerings without a full platform redesign.</br>Intel’s launch materials emphasize that the W-3500 series is tailored for content creators, engineers, and AI developers, with the w9-3575X positioned below the 56- and 60-core flagships.
Compared to the earlier W-3400 generation, the W-3500 parts offer roughly 10–15% higher performance in many multi-threaded content creation workloads, according to Puget Systems’ review, though they consume more power and still trail AMD’s Threadripper PRO 7000 WX-series in the heaviest multi-threaded scenarios.</br>The introduction of X-series unlocked Xeon SKUs also marks a shift for Intel, bringing overclocking features traditionally reserved for the Extreme Edition desktop parts into the workstation line. This gives enthusiasts and power users more control over the w9-3575X’s clocks and power limits, though in practice the already high 340 W base power means overclocking headroom is limited without robust cooling.
Improvements over Previous Generation
- 8 additional cores and 16 more threads (36C/72T → 44C/88T)
- 15 MB more L3 cache (82.5 MB → 97.5 MB)
- Higher base power (300 W → 340 W) and turbo power (360 W → 408 W) for increased multi-thread headroom
- Same 112 PCIe 5.0 lanes and 8-channel DDR5-4800, but with better multi-threaded performance
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
High-end single-socket workstation for 3D rendering, engineering simulation, or AI inference where you need 44+ cores and 112 PCIe lanes but not the absolute top core count.
Avoid if…
- You are building a gaming-only PC
- Your workloads are lightly threaded and would benefit more from higher clocks and lower power
- You need the maximum multi-threaded performance and can afford Threadripper PRO 7000 WX-series
- You want a more power-efficient platform with a longer upgrade path
Use Cases
Interesting Facts
The w9-3575X is part of Intel’s first Xeon workstation family with an X-suffix and unlocked multiplier, allowing overclocking on what is traditionally a locked server line.
Sapphire Rapids Refresh keeps the same basic tile architecture as the original Xeon W-3400 but increases core counts and cache, making the W-3500 series a straightforward refresh rather than a new architecture.
With 112 PCIe 5.0 lanes, the w9-3575X can drive four x16 GPUs plus multiple NVMe drives without running out of lanes, a key selling point for GPU-heavy render farms and AI workstations.
Intel’s own product brief highlights that the W-3500 series maintains 8-channel DDR5-4800 and 4 TB memory support, exactly matching the W-3400 generation but at higher core counts and TDP.
The XCC multi-die design used in this SKU is the same packaging approach as Intel’s high-core-count server processors, brought into a single-socket workstation form factor.
PassMark’s comparison data shows the w9-3575X around 32% faster in multi-threaded CPU Mark and about 12% faster in single-thread than the w9-3475X, reflecting the impact of 8 extra cores and slightly higher power.
Intel positions the W-3500 series specifically for content creation and engineering workstations, with the w9-3575X sitting in the middle of the stack below the 56-core and 60-core parts.
Unlike some high-end desktop CPUs, the w9-3575X lacks any form of integrated graphics, which is typical for Xeon workstation parts but requires at least one discrete GPU.
The processor’s turbo behavior is asymmetric: it can hit up to 4.8 GHz on a single core via Turbo Boost Max 3.0, but all-core turbo is lower and constrained by the 340 W base power and 408 W maximum turbo power.
Although primarily a workstation CPU, the w9-3575X’s combination of AMX and AVX-512 makes it interesting for CPU-based AI inference and scientific computing, areas where Intel claims strong HPL performance for Sapphire Rapids.
People Also Ask
Is the Intel Xeon w9-3575X good for gaming?
It can game well at high refresh rates thanks to good single-thread clocks, but it is not optimized for gaming. Mainstream desktop CPUs deliver similar or better gaming performance with much lower power and cost.
Does the Xeon w9-3575X have integrated graphics?
No, it does not have integrated graphics. You must use a discrete GPU for any display output, which is typical for Xeon workstation processors.
How many PCIe lanes does the Xeon w9-3575X have?
It provides 112 PCIe 5.0 lanes from the CPU, making it suitable for multi-GPU and high-speed storage configurations in workstations.
What memory does the Xeon w9-3575X support?
It supports 8-channel DDR5-4800 ECC RDIMMs, with a maximum capacity of 4 TB, validated for workstation reliability.
Can you overclock the Xeon w9-3575X?
Yes, it is an unlocked X-series processor and can be overclocked on Intel W790 motherboards that support overclocking, though thermal and power constraints are significant.
What is the difference between Xeon w9-3575X and w9-3475X?
The w9-3575X has 8 more cores (44 vs 36), 16 more threads, 15 MB more L3 cache, and higher power limits (340 W base vs 300 W), giving it a clear multi-threaded advantage at similar clocks.
Is the Xeon w9-3575X overkill for content creation?
For many content creators, 44 cores is more than necessary unless you work with very heavy 3D scenes, complex simulations, or multi-project workflows. Lighter workloads may be better served by fewer, faster cores.
Does the Xeon w9-3575X support ECC memory?
Yes, it supports DDR5 ECC RDIMMs, which is important for data integrity in professional workstations and servers.
What socket does the Xeon w9-3575X use?
It uses the LGA4677 socket (FCLGA4677), paired with Intel W790 chipset motherboards.
How does the Xeon w9-3575X compare to AMD Threadripper PRO?
It offers competitive core counts and I/O, but AMD Threadripper PRO 7000 WX-series CPUs often lead in multi-threaded performance and efficiency, especially at the 64- and 96-core end, while Intel may have advantages in AMX/AVX-512-optimized workloads and platform cost for certain configurations.
Frequently Asked Questions
What is the Xeon w9-3575X’s base and turbo power?
The processor base power is 340 W, with a maximum turbo power of 408 W, as listed in Intel’s official specifications.
Does the Xeon w9-3575X have integrated graphics?
No, it does not. A discrete GPU is required for graphical output, which is standard for Xeon workstation CPUs.
Can the Xeon w9-3575X be overclocked?
Yes, it is an unlocked X-series CPU and can be overclocked on compatible W790 motherboards, though cooling and power delivery must be carefully designed.
What memory speeds and capacity does the Xeon w9-3575X support?
It supports 8-channel DDR5-4800 ECC RDIMMs, up to 4 TB total capacity, according to Intel’s product documentation.
How many PCIe 5.0 lanes does the Xeon w9-3575X provide?
It provides 112 PCIe 5.0 lanes from the CPU, which is consistent across the Xeon W9-3400 and W9-3500 families.
Is the Xeon w9-3575X suitable for gaming?
It can game reasonably well but is not designed as a gaming CPU. Modern desktop CPUs offer better gaming performance per dollar and per watt.
What architecture does the Xeon w9-3575X use?
It uses the Sapphire Rapids Refresh architecture, an updated version of the Sapphire Rapids Xeon platform with higher core counts and cache for workstations.
Does the Xeon w9-3575X support Intel vPro?
Yes, it supports Intel vPro Enterprise, providing enterprise-level management and security features for business workstations.
Is the Xeon w9-3575X a good choice for a home lab server?
It can work well in a home lab with heavy virtualization or storage workloads, but its high power and cost may be hard to justify compared to used server or workstation platforms.
What process node is the Xeon w9-3575X built on?
It is built on Intel’s Intel 7 process, which is a 10nm-class Enhanced SuperFin node previously used for Sapphire Rapids and Alder Lake.