Core i9-11900KF vs Xeon W-2170B

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.

Core i9-11900KF vs Xeon W-2170B 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.

Core i9-11900KF vs Xeon W-2170B: Pros, Cons & Final Verdict

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

Core i9-11900KF

2021

Why buy it

✅Better for gaming: +21.6% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 125W instead of 140W, a 15W reduction.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (16 MB vs 19 MB).
❌Less compelling for workstation-style loads than Xeon W-2170B, which brings 14 cores / 28 threads.
❌Launch MSRP is still $513 MSRP, while Xeon W-2170B mostly shows up through inconsistent older-market listings.

Xeon W-2170B

2017

Why buy it

✅+20.3% larger total L3 cache (19 MB vs 16 MB).
✅Better for workstations and heavier parallel workloads: 14 cores / 28 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-11900KF across 50 shared CPU benchmark tests.
❌Lower PassMark (24,448 vs 24,585).
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Quick Answers

So, is Core i9-11900KF better than Xeon W-2170B?

Not really, because they are built for different jobs. Xeon W-2170B makes more sense for workstation-style multi-core throughput, while Core i9-11900KF is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i9-11900KF is the better pick. According to our tests, it delivers 21.6% 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, Core i9-11900KF is the stronger fit. You are getting 0.6% better PassMark, backed by 8 cores and 16 threads.

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

Core i9-11900KF is the better buy right now. Core i9-11900KF comes in at an unclear MSRP at $513 MSRP versus unclear MSRP, and it still gives you a 21.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (47.9 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i9-11900KF makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2017), more multi-core headroom with 8 cores / 16 threads instead of 14/28, and AVX-512 support for heavier modern compute workloads. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-11900KF vs Xeon W-2170B Technical Specifications

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

Core i9-11900KF

The Core i9-11900KF is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.5 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4-3200. Passmark benchmark score: 24,585 points. Launch price was $299.

Xeon W-2170B

The Xeon W-2170B is manufactured by Intel. It was released in 2015-01-01. It is based on the Skylake (server) (2017−2018) architecture. It features 14 cores and 28 threads. Base frequency is 2.5 GHz, with boost up to 4.3 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,448 points. Launch price was $800.

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Processing Power

The Core i9-11900KF packs 8 cores / 16 threads, while the Xeon W-2170B offers 14 cores / 28 threads — the Xeon W-2170B has 6 more cores. Boost clocks reach 5.2 GHz on the Core i9-11900KF versus 4.3 GHz on the Xeon W-2170B — a 18.9% clock advantage for the Core i9-11900KF (base: 3.5 GHz vs 2.5 GHz). The Core i9-11900KF uses the Rocket Lake (2021) architecture (14 nm), while the Xeon W-2170B uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i9-11900KF scores 24,585 against the Xeon W-2170B's 24,448 — a 0.6% lead for the Core i9-11900KF. L3 cache: 16 MB (total) on the Core i9-11900KF vs 19.25 MB (total) on the Xeon W-2170B.

Feature	Core i9-11900KF	Xeon W-2170B
Cores / Threads	8 / 16	14 / 28+75%
Boost Clock	5.2 GHz+21%	4.3 GHz
Base Clock	3.5 GHz+40%	2.5 GHz
L3 Cache	16 MB (total)	19.25 MB (total)+20%
L2 Cache	256K (per core)+25500%	1 MB (per core)
Process	14 nm	14 nm
Architecture	Rocket Lake (2021)	Skylake (server) (2017−2018)
PassMark	24,585	24,448
Cinebench R23 Multi	15,500	—

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Memory & Platform

The Core i9-11900KF uses the LGA1200 socket (PCIe 4.0), while the Xeon W-2170B uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i9-11900KF	Xeon W-2170B
Socket	LGA1200	LGA2066
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	20	—