CPU Comparison
Intel Xeon w7-3555 vs Intel Xeon w9-3575X
A side-by-side comparison of specs, performance and value. The Intel Xeon w7-3555 is a 28-core, 56-thread workstation processor based on the Sapphire Rapids-WS (Golden Cove) architecture, delivering up to 4.8 GHz turbo on an LGA4677 platform with eight channels of DDR5-4800 ECC memory and 112 PCIe 5.0 lanes for high-end workstations and multi-GPU configurations.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Very strong multi‑threaded performance for professional applications; 28 P‑cores with high turbo frequencies and ample cache make short work of rendering, compiles, and data processing.
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.
Gaming
Competent at high refresh 1080p/1440p gaming thanks to strong single‑thread clocks, but not a rational choice for pure gaming builds due to high cost and power draw compared to mainstream CPUs.
Not a gaming CPU; capable of high refresh-rate gameplay but significantly outperformed by modern gaming-focused desktop CPUs at much lower power.
Virtualization
Excellent for workstation‑class virtualization with many vCPUs, thanks to 56 hardware threads, large memory support, and extensive I/O.
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.
Efficiency
325 W base and 390 W turbo power result in high energy use and cooling requirements; efficiency is acceptable only if the I/O and core count are fully utilized.
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.
Specialized Performance
AI / ML
- AMX and AVX‑512 provide strong CPU‑side matrix and inference acceleration.
- No dedicated NPU; AI workloads rely on CPU + GPU combination.
- Excellent for AI development and small‑scale training where multi‑GPU and large memory matter more than pure CPU TOPS.
- 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.
Content Creation
Gaming
- Strong single‑core turbo up to 4.8 GHz benefits high‑FPS gaming.
- Lack of hybrid E‑cores avoids scheduling oddities compared to client CPUs.
- Cost and power make it hard to recommend over gaming‑focused desktop CPUs.
- Best paired with high‑end GPU for GPU‑bound titles where CPU overhead matters.
- 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.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 28 P‑cores with 56 threads for heavy multi‑threaded workloads
- 112 PCIe 5.0 lanes for multi‑GPU and NVMe expansion
- 8‑channel DDR5‑4800 with ECC and up to 4 TB capacity
- Strong AVX‑512 and AMX acceleration for AI and HPC
- Robust RAS and vPro enterprise features
- Single‑socket simplicity with workstation‑class I/O
Cons
- Very high power draw (325 W base, 390 W turbo)
- Locked multiplier limits easy overclocking
- Expensive CPU and platform compared to consumer alternatives
- No integrated graphics requires discrete GPU
- Large LGA4677 socket and cooling requirements restrict case and cooler choices
Pros
- 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)
Cons
- 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
Competitors & Alternatives
Intel Xeon w7-3555
- AMD Ryzen Threadripper PRO 7965WXRival
Workstation
- AMD Ryzen Threadripper PRO 5975WXRival
Workstation
- AMD EPYC 9254Rival
Server / Workstation
- Compare head-to-headIntel Xeon w7-3565XRival
Workstation
- Intel Xeon w9-3475XRival
Workstation
Lower‑cost alternative with slightly fewer cores if 28 are not strictly necessary.
Compare head-to-head
Intel Xeon w9-3575X
- Intel Xeon w9-3475XRival
Workstation
- Intel Xeon w9-3495XRival
Workstation
- Compare head-to-headIntel Xeon w9-3595XRival
Workstation
- AMD Ryzen Threadripper PRO 7975WXRival
Workstation
- AMD Ryzen Threadripper PRO 7995WXRival
Workstation
- Intel Core Ultra 9 285K or similar high-end desktop CPUAlt
Much cheaper and more efficient for gaming and light content creation, but with fewer cores and fewer PCIe lanes; best when you don’t need workstation-class I/O.
Our Verdict on Each
A heavyweight workstation CPU with excellent multi-threaded throughput and massive I/O, best suited for users who actually need 28 cores and 112 PCIe 5.0 lanes, not for mainstream gaming or office builds.
Best for: Building a single‑socket workstation that must support multiple high‑end GPUs, large DDR5 ECC memory, and many PCIe 5.0 devices for rendering, simulation, or AI development.
Read the full reviewA 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.
Best for: 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.
Read the full reviewFrequently Asked Questions
Which is better, Intel Xeon w7-3555 or Intel Xeon w9-3575X?
Based on our editorial ratings, the Intel Xeon w9-3575X comes out ahead with a score of 8.7/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Xeon w7-3555 or Intel Xeon w9-3575X?
For gaming, the Intel Xeon w7-3555 leads with a gaming performance score of 72/100 among Intel Xeon w7-3555 and Intel Xeon w9-3575X.
Which uses less power?
The Intel Xeon w7-3555 has the lowest rated TDP. Power draw across these chips: Intel Xeon w7-3555 (325 W), Intel Xeon w9-3575X (340 W).
Do Intel Xeon w7-3555 and Intel Xeon w9-3575X use the same socket?
Yes — all of these CPUs use the FCLGA4677 socket, so they share compatible motherboards.
Which has more cores?
The Intel Xeon w9-3575X has the most cores. Core counts: Intel Xeon w7-3555 (28 cores), Intel Xeon w9-3575X (44 cores).
Which is faster in multi-core benchmarks?
The Intel Xeon w9-3575X posts the highest multi-core benchmark score. Multi-core results: Intel Xeon w7-3555 (17,120), Intel Xeon w9-3575X (85,000). Benchmark figures are approximate and workload-dependent.