Intel Xeon W-3175X

Intel Xeon W-3175X: An Extreme Platform for Professionals
Relevant as of April 2025
Key Features: Architecture and Performance
The Intel Xeon W-3175X processor, released in late 2018, remains a niche solution for tasks requiring extreme multi-threaded performance. Despite its age, it continues to be relevant in specific scenarios due to its unique features.
Architecture and Process Technology
- Codename: Skylake (modified version for Xeon).
- Process Technology: 14 nm (Intel 14nm++), which is considered outdated by 2025 but provides stability.
- Cores/Threads: 28 cores, 56 threads — the maximum for the desktop segment at the time of release.
- Frequencies: Base — 3.1 GHz, maximum in Turbo Boost — 4.3 GHz (single core).
- Cache: L3 — 38.5 MB (1.375 MB per core).
- TDP: 255 W — requires serious cooling.
Performance
- Geekbench 6:
- Single-Core: 1467 (comparable to Intel Core i9-10900K).
- Multi-Core: 13646 (close to AMD Ryzen Threadripper 3970X).
- Strengths:
- Optimization for parallel tasks (rendering, simulations).
- Support for AVX-512 — acceleration of scientific computations.
- Key Features:
- Unlocked multiplier for overclocking (a rarity among Xeon).
- Supports up to 512 GB DDR4 and 68 PCIe 3.0 lanes.
Compatible Motherboards: Socket and Chipsets
The Xeon W-3175X uses an exclusive LGA 3647 socket, limiting motherboard choices.
Recommended Models
- ASUS ROG Dominus Extreme: The only gaming-oriented board for this processor (price in 2025: ~$800–$1000 on the second-hand market).
- Gigabyte C621 AORUS XTREME: Focus on stability and VRM cooling.
- Supermicro MBD-X11SPA-T: For workstations with ECC memory support.
Selection Considerations
- Chipset: Intel C621 — optimized for server tasks.
- Requirements:
- Powerful power supply system (24-phase VRM).
- Support for 6–8 memory channels.
- Advanced cooling options (heatsinks on MOSFETs).
Supported Memory: DDR4 and Its Configurations
- Type: Only DDR4 (DDR5 not supported).
- Frequencies: Up to 2666 MHz (officially), but some boards allow overclocking to 3000–3200 MHz.
- Configurations:
- 6-channel mode (minimum 6 modules).
- Maximum capacity — 512 GB (using 64 GB modules).
- Tip: Use kits with low timings (CL14–16) to reduce latency.
Power Supplies: Power Calculation
With a TDP of 255 W and peak consumption up to 400 W (when overclocked), the choice of PSU is critical.
Recommendations
- Minimum: 850 W (for systems without multiple graphics cards).
- Optimal: 1000–1200 W with an 80+ Platinum/Titanium certification.
- Examples:
- Corsair AX1200i (digital control, efficiency 92%).
- Seasonic PRIME TX-1000 (12 years warranty).
- Nuances:
- Avoid cheap PSUs — possible voltage drops.
- Use thicker cables (16 AWG).
Pros and Cons of Xeon W-3175X
Advantages
1. Multi-threaded Power: 56 threads are relevant for rendering in Blender or compiling code.
2. Overclocking Potential: With good cooling, it can achieve 4.5 GHz on all cores.
3. ECC Memory Support: Reliability for workstations.
Disadvantages
1. Platform Cost: Motherboards and PSUs will cost between $1500 and $2000.
2. Energy Consumption: Electricity bills will increase, especially under load 24/7.
3. Outdated Standards: PCIe 3.0 and DDR4 versus PCIe 5.0 and DDR5 in modern CPUs.
Use Cases: Where W-3175X is Still Relevant
Work Tasks
- 3D Rendering: In Maya or Cinema 4D, the processor performs at the level of the Threadripper 3970X.
- Scientific Calculations: AVX-512 accelerates tasks in MATLAB or ANSYS.
- Virtualization: Running dozens of VMs without slowdowns.
Gaming
- Streaming: 56 threads handle encoding in OBS + gaming.
- Multi-threaded Projects: For example, Microsoft Flight Simulator 2024 at maximum settings.
Multimedia
- Video Editing: Rendering 8K in DaVinci Resolve is 1.5 times faster on 28 cores than with the Core i9-14900K.
Comparison with Competitors
AMD Threadripper 2970WX (24 cores/48 threads)
- Cheaper (~$1200 in 2025 compared to $3000 for a new W-3175X), but weaker in single-threaded tasks.
- The TRX40 platform supports PCIe 4.0.
Intel Core i9-14900KS (8P+16E cores)
- Higher IPC and frequency (up to 6.2 GHz), but the 28 Xeon cores win in parallel tasks.
Modern Alternatives (2025)
- AMD Ryzen Threadripper 7970X (64 cores): 3 times more expensive, but 2.5 times more powerful.
- Intel Xeon W9-3595X (56 cores): Based on Golden Cove, with DDR5 and PCIe 5.0.
Practical Assembly Tips
1. Cooling:
- Liquid Cooling: Arctic Liquid Freezer III 420 or a custom water loop.
- Thermal Paste: Thermal Grizzly Kryonaut.
2. Case: Full-Tower (for example, Lian Li PC-O11 Dynamic XL) with 8+ fans.
3. Drives: NVMe SSD (Samsung 990 Pro 4TB) to reduce bottlenecks.
Conclusion: Who is the Xeon W-3175X Suitable For?
This processor is worth considering only in two cases:
1. Upgrading an Old System: If you already have a compatible motherboard and RAM.
2. Budget Alternative: When maximum multi-threading is needed but there is no $5000 for a modern Threadripper.
Final Verdict: The W-3175X in 2025 is a choice for enthusiasts and professionals willing to overlook platform shortcomings for unique advantages. For most users, modern CPUs will be more practical.