Xeon Gold 6126 vs Xeon W-11855M

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Xeon Gold 6126 vs Xeon W-11855M FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Xeon Gold 6126 vs Xeon W-11855M: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Xeon Gold 6126

2017

Why buy it

✅+0.2% higher PassMark.
✅100+% more PCIe lanes (48 vs 0) for storage and expansion-heavy builds.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon W-11855M across 50 shared CPU benchmark tests.
❌257.1% higher power demand at 125W vs 35W.

Xeon W-11855M

2021

Why buy it

✅Better for gaming: +3.6% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 35W instead of 125W, a 90W reduction.

Trade-offs

❌Lower PassMark (17,462 vs 17,492).
❌Launch MSRP is still $450 MSRP, while Xeon Gold 6126 mostly shows up through inconsistent older-market listings.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Quick Answers

So, is Xeon W-11855M better than Xeon Gold 6126?

It depends on what you want from the system. For gaming, Xeon W-11855M is ahead with a 3.6% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon Gold 6126 pulls ahead with 0.2% better PassMark.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon Gold 6126 is the stronger fit. You are getting 0.2% better PassMark, backed by 12 cores and 24 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Xeon W-11855M is the better buy right now. Xeon W-11855M comes in at an unclear MSRP at $450 MSRP versus unclear MSRP, and it still gives you a 3.6% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Xeon Gold 6126 is still stronger for heavier multi-core work with 0.2% better PassMark. It is also 100.0% better value on MSRP (38.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

Xeon W-11855M makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2017). That makes it the safer long-term bet.

Xeon Gold 6126 vs Xeon W-11855M Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Xeon Gold 6126

The Xeon Gold 6126 is manufactured by Intel. It was released in 25 April 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2.6 GHz, with boost up to 3.7 GHz. L3 cache: 19.25 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2666. Passmark benchmark score: 17,492 points. Launch price was $1,776.

Xeon W-11855M

The Xeon W-11855M is manufactured by Intel. It was released in 11 May 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 6 cores and 12 threads. Base frequency is 3.2 GHz, with boost up to 4.9 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1787. Thermal design power (TDP): 35 Watt. Memory support: DDR4. Passmark benchmark score: 17,462 points. Launch price was $450.

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Processing Power

The Xeon Gold 6126 packs 12 cores / 24 threads, while the Xeon W-11855M offers 6 cores / 12 threads — the Xeon Gold 6126 has 6 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6126 versus 4.9 GHz on the Xeon W-11855M — a 27.9% clock advantage for the Xeon W-11855M (base: 2.6 GHz vs 3.2 GHz). The Xeon Gold 6126 uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon W-11855M uses Tiger Lake-H (2021) (10 nm SuperFin). In PassMark, the Xeon Gold 6126 scores 17,492 against the Xeon W-11855M's 17,462 — a 0.2% lead for the Xeon Gold 6126. L3 cache: 19.25 MB on the Xeon Gold 6126 vs 18 MB (total) on the Xeon W-11855M.

Feature	Xeon Gold 6126	Xeon W-11855M
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	3.7 GHz	4.9 GHz+32%
Base Clock	2.6 GHz	3.2 GHz+23%
L3 Cache	19.25 MB+7%	18 MB (total)
L2 Cache	12 MB+860%	1.25 MB (per core)
Process	14 nm	10 nm SuperFin-29%
Architecture	Skylake (server) (2017−2018)	Tiger Lake-H (2021)
PassMark	17,492	17,462

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Memory & Platform

The Xeon Gold 6126 uses the LGA3647 socket (PCIe 3.0), while the Xeon W-11855M uses FCBGA1787 (PCIe 5.0) — making them incompatible on the same motherboard.