Xeon W-2140B 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 W-2140B 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 W-2140B 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 W-2140B

2017

Why buy it

✅Costs $156 less on MSRP ($294 MSRP vs $450 MSRP).
✅Delivers 51.8% more PassMark for each dollar spent, at 58.9 vs 38.8 PassMark/$ ($294 MSRP vs $450 MSRP).

Trade-offs

❌Lower PassMark (17,319 vs 17,462).
❌Smaller total L3 cache (11 MB vs 18 MB).
❌242.9% higher power demand at 120W vs 35W.

Xeon W-11855M

2021

Why buy it

✅+63.6% larger total L3 cache (18 MB vs 11 MB).
✅Draws 35W instead of 120W, a 85W reduction.

Trade-offs

❌Lower PassMark per dollar, at 38.8 vs 58.9 PassMark/$ ($450 MSRP vs $294 MSRP).

Quick Answers

So, is Xeon W-11855M better than Xeon W-2140B?

Yes. Xeon W-11855M is the better all-around CPU here. It gives you a 0.5% average FPS lead across 50 shared CPU game tests in our data, 0.8% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon W-11855M is the better pick. According to our tests, it delivers 0.5% 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-11855M is the stronger fit. You are getting 0.8% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 63.6% larger total L3 cache (18 MB vs 11 MB).

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

Xeon W-11855M is still the faster CPU overall, but Xeon W-2140B is easier to justify if budget matters more than peak performance. Xeon W-11855M comes in 53.1% more expensive on MSRP at $450 MSRP versus $294 MSRP, and it still gives you a 0.5% average FPS lead across 50 shared CPU game tests in our data. Xeon W-2140B is also 51.8% better value on MSRP (58.9 vs 38.8 PassMark/$), which is why it can still make sense for tighter-budget builds 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), 63.6% larger total L3 cache (18 MB vs 11 MB), and more multi-core headroom with 6 cores / 12 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon W-2140B vs Xeon W-11855M Technical Specifications

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

Xeon W-2140B

The Xeon W-2140B is manufactured by Intel. It was released in 2015-01-01. It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 3.2 GHz, with boost up to 4.2 GHz. L3 cache: 11 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 120 Watt. Memory support: DDR4-2666. Passmark benchmark score: 17,319 points. Launch price was $800.

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 W-2140B packs 8 cores / 16 threads, while the Xeon W-11855M offers 6 cores / 12 threads — the Xeon W-2140B has 2 more cores. Boost clocks reach 4.2 GHz on the Xeon W-2140B versus 4.9 GHz on the Xeon W-11855M — a 15.4% clock advantage for the Xeon W-11855M (base: 3.2 GHz vs 3.2 GHz). The Xeon W-2140B 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 W-2140B scores 17,319 against the Xeon W-11855M's 17,462 — a 0.8% lead for the Xeon W-11855M. L3 cache: 11 MB (total) on the Xeon W-2140B vs 18 MB (total) on the Xeon W-11855M.

Feature	Xeon W-2140B	Xeon W-11855M
Cores / Threads	8 / 16+33%	6 / 12
Boost Clock	4.2 GHz	4.9 GHz+17%
Base Clock	3.2 GHz	3.2 GHz
L3 Cache	11 MB (total)	18 MB (total)+64%
L2 Cache	1 MB (per core)	1.25 MB (per core)+25%
Process	14 nm	10 nm SuperFin-29%
Architecture	Skylake (server) (2017−2018)	Tiger Lake-H (2021)
PassMark	17,319	17,462

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Memory & Platform

The Xeon W-2140B uses the LGA2066 socket (PCIe 3.0), while the Xeon W-11855M uses FCBGA1787 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Xeon W-2140B	Xeon W-11855M
Socket	LGA2066	FCBGA1787
PCIe Generation	PCIe 3.0	PCIe 5.0+67%

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Value Analysis

At launch, the Xeon W-2140B was priced at $294, while the Xeon W-11855M came in at $450. On launch pricing ($294 vs $450), Xeon W-2140B was $156 cheaper. In terms of value on MSRP (PassMark points per dollar), the Xeon W-2140B delivers 58.9 pts/$ vs 38.8 pts/$ for the Xeon W-11855M — making the Xeon W-2140B the 41.1% better value option.

Feature	Xeon W-2140B	Xeon W-11855M
MSRP	$294-35%	$450
Performance per Dollar	58.9+52%	38.8
Release Date	2017	2021

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