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 i9-12900E vs Xeon W-2191B 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 i9-12900E vs Xeon W-2191B: Pros, Cons & Final Verdict

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

Core i9-12900E

2022

Why buy it

✅Better for gaming: +19.1% higher average FPS across 50 shared CPU benchmark tests.
✅+21.2% larger total L3 cache (30 MB vs 25 MB).
✅Costs $833 less on MSRP ($500 MSRP vs $1,333 MSRP).
✅Delivers 164.8% more PassMark for each dollar spent, at 56.3 vs 21.3 PassMark/$ ($500 MSRP vs $1,333 MSRP).
✅Draws 65W instead of 140W, a 75W reduction.

Trade-offs

❌Lower PassMark (28,170 vs 28,362).
❌Less compelling for workstation-style loads than Xeon W-2191B, which brings 18 cores / 36 threads and 48 PCIe lanes.

Xeon W-2191B

2017

Why buy it

✅+0.7% higher PassMark.
✅Better for workstations and heavier parallel workloads: 18 cores / 36 threads, plus 48 PCIe lanes vs 20.
✅140% more PCIe lanes (48 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-12900E across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (25 MB vs 30 MB).
❌Lower PassMark per dollar, at 21.3 vs 56.3 PassMark/$ ($1,333 MSRP vs $500 MSRP).
❌115.4% higher power demand at 140W vs 65W.
❌Older platform position on LGA2066 with DDR4, while Core i9-12900E moves to LGA1700 and DDR5.

Quick Answers

So, is Core i9-12900E better than Xeon W-2191B?

Not really, because they are built for different jobs. Xeon W-2191B makes more sense for workstation-style multi-core throughput, while Core i9-12900E is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Xeon W-2191B is the stronger fit. You are getting 0.7% better PassMark, backed by 18 cores and 36 threads.

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

Core i9-12900E is the better buy right now. Core i9-12900E comes in $833 cheaper on MSRP at $500 MSRP versus $1,333 MSRP, and it still gives you a 19.1% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Xeon W-2191B is still stronger for heavier multi-core work with 0.7% better PassMark. It is also 164.8% better value on MSRP (56.3 vs 21.3 PassMark/$), 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 i9-12900E makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2017), a healthier platform with LGA1700 and DDR5 instead of LGA2066, and 21.2% larger total L3 cache (30 MB vs 25 MB). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-12900E vs Xeon W-2191B Technical Specifications

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

Core i9-12900E

The Core i9-12900E is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 16 cores and 24 threads. Base frequency is 2.3 GHz, with boost up to 5 GHz. L3 cache: 30 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR4, DDR5 Dual-channel. Passmark benchmark score: 28,170 points. Launch price was $299.

Xeon W-2191B

The Xeon W-2191B is manufactured by Intel. It was released in 2015-01-01. It is based on the Skylake (server) (2017−2018) architecture. It features 18 cores and 36 threads. Base frequency is 2.3 GHz, with boost up to 4.3 GHz. L3 cache: 24.75 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 28,362 points. Launch price was $800.

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Processing Power

The Core i9-12900E packs 16 cores / 24 threads, while the Xeon W-2191B offers 18 cores / 36 threads — the Xeon W-2191B has 2 more cores. Boost clocks reach 5 GHz on the Core i9-12900E versus 4.3 GHz on the Xeon W-2191B — a 15.1% clock advantage for the Core i9-12900E (base: 2.3 GHz vs 2.3 GHz). The Core i9-12900E uses the Alder Lake-S (2022) architecture (10 nm), while the Xeon W-2191B uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i9-12900E scores 28,170 against the Xeon W-2191B's 28,362 — a 0.7% lead for the Xeon W-2191B. L3 cache: 30 MB (total) on the Core i9-12900E vs 24.75 MB (total) on the Xeon W-2191B.

Feature	Core i9-12900E	Xeon W-2191B
Cores / Threads	16 / 24	18 / 36+13%
Boost Clock	5 GHz+16%	4.3 GHz
Base Clock	2.3 GHz	2.3 GHz
L3 Cache	30 MB (total)+21%	24.75 MB (total)
L2 Cache	1.25 MB (per core)+25%	1 MB (per core)
Process	10 nm-29%	14 nm
Architecture	Alder Lake-S (2022)	Skylake (server) (2017−2018)
PassMark	28,170	28,362
Cinebench R23 Multi	13,420	—
Geekbench 6 Multi	13,107	—

🧠

Memory & Platform

The Core i9-12900E uses the LGA1700 socket (PCIe 5.0), while the Xeon W-2191B uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Core i9-12900E versus DDR4-2666 on the Xeon W-2191B — the Core i9-12900E supports 80% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon W-2191B supports up to 512 GB of RAM compared to 128 GB — 300% more capacity for professional workloads. Memory channels: 2 (Core i9-12900E) vs 4 (Xeon W-2191B). PCIe lanes: 20 (Core i9-12900E) vs 48 (Xeon W-2191B) — the Xeon W-2191B offers 28 more lanes for additional GPUs or NVMe drives.

Feature	Core i9-12900E	Xeon W-2191B
Socket	LGA1700	LGA2066
PCIe Generation	PCIe 5.0+67%	PCIe 3.0
Max RAM Speed	DDR5-4800+80%	DDR4-2666
Max RAM Capacity	128 GB	512 GB+300%
RAM Channels	2	4+100%
ECC Support	Yes	Yes
PCIe Lanes	20	48+140%

🔧

Advanced Features

Neither processor supports overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Both support VT-x, VT-d virtualization. The Core i9-12900E includes integrated graphics (UHD Graphics 770), while the Xeon W-2191B requires a dedicated GPU. Primary use case: Xeon W-2191B targets Workstation.

Feature	Core i9-12900E	Xeon W-2191B
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 770	—
Unlocked	No	No
AVX-512	Yes	Yes
Virtualization	VT-x, VT-d	VT-x, VT-d
Target Use	—	Workstation

💰

Value Analysis

At launch, the Core i9-12900E was priced at $500, while the Xeon W-2191B came in at $1333. On launch pricing ($500 vs $1333), Core i9-12900E was $833 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-12900E delivers 56.3 pts/$ vs 21.3 pts/$ for the Xeon W-2191B — making the Core i9-12900E the 90.3% better value option.

Feature	Core i9-12900E	Xeon W-2191B
MSRP	$500-62%	$1333
Performance per Dollar	56.3+164%	21.3
Release Date	2022	2017

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