Xeon Gold 6126T vs Xeon W-2155

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 6126T vs Xeon W-2155 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 6126T vs Xeon W-2155: 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 6126T

2017

Why buy it

✅+40% larger total L3 cache (19 MB vs 14 MB).
✅Draws 125W instead of 140W, a 15W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon W-2155 across 50 shared CPU benchmark tests.
❌Lower PassMark (20,821 vs 20,858).

Xeon W-2155

2017

Why buy it

✅Better for gaming: +12.6% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (14 MB vs 19 MB).
❌Launch MSRP is still $1,440 MSRP, while Xeon Gold 6126T mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Xeon W-2155 better than Xeon Gold 6126T?

Yes. Xeon W-2155 is the better all-around CPU here. It gives you a 12.6% average FPS lead across 50 shared CPU game tests in our data and 0.2% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon W-2155 is the better pick. According to our tests, it delivers 12.6% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon W-2155 is the stronger fit. You are getting 0.2% better PassMark, backed by 10 cores and 20 threads.

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

Xeon W-2155 is the better buy right now. Xeon W-2155 comes in at an unclear MSRP at $1,440 MSRP versus unclear MSRP, and it still gives you a 12.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (14.5 vs 0.0 PassMark/$), 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-2155 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Xeon Gold 6126T vs Xeon W-2155 Technical Specifications

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

Xeon Gold 6126T

The Xeon Gold 6126T 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: 20,821 points. Launch price was $1,865.

Xeon W-2155

The Xeon W-2155 is manufactured by Intel. It was released in 29 August 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 10 cores and 20 threads. Base frequency is 3.3 GHz, with boost up to 4.5 GHz. L3 cache: 13.75 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400, DDR4-2666. Passmark benchmark score: 20,858 points. Launch price was $1,440.

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Processing Power

The Xeon Gold 6126T packs 12 cores / 24 threads, while the Xeon W-2155 offers 10 cores / 20 threads — the Xeon Gold 6126T has 2 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6126T versus 4.5 GHz on the Xeon W-2155 — a 19.5% clock advantage for the Xeon W-2155 (base: 2.6 GHz vs 3.3 GHz). Both are built on the Skylake (server) (2017−2018) architecture using a 14 nm process. In PassMark, the Xeon Gold 6126T scores 20,821 against the Xeon W-2155's 20,858 — a 0.2% lead for the Xeon W-2155. L3 cache: 19.25 MB on the Xeon Gold 6126T vs 13.75 MB (total) on the Xeon W-2155.

Feature	Xeon Gold 6126T	Xeon W-2155
Cores / Threads	12 / 24+20%	10 / 20
Boost Clock	3.7 GHz	4.5 GHz+22%
Base Clock	2.6 GHz	3.3 GHz+27%
L3 Cache	19.25 MB+40%	13.75 MB (total)
L2 Cache	12 MB+1100%	1 MB (per core)
Process	14 nm	14 nm
Architecture	Skylake (server) (2017−2018)	Skylake (server) (2017−2018)
PassMark	20,821	20,858

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Memory & Platform

The Xeon Gold 6126T uses the LGA3647 socket (PCIe 3.0), while the Xeon W-2155 uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.