Core i7-5930K vs Xeon E-2126G

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 i7-5930K vs Xeon E-2126G 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 i7-5930K vs Xeon E-2126G: Pros, Cons & Final Verdict

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

Core i7-5930K

2014

Why buy it

✅Better for gaming: +10.5% higher average FPS across 50 shared CPU benchmark tests.
✅+25% larger total L3 cache (15 MB vs 12 MB).
✅Costs $2,119 less on MSRP ($583 MSRP vs $2,702 MSRP).
✅Delivers 360.4% more PassMark for each dollar spent, at 17.8 vs 3.9 PassMark/$ ($583 MSRP vs $2,702 MSRP).
✅100+% more PCIe lanes (40 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (10,369 vs 10,437).
❌75% higher power demand at 140W vs 80W.

Xeon E-2126G

2018

Why buy it

✅+0.7% higher PassMark.
✅Draws 80W instead of 140W, a 60W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-5930K across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (12 MB vs 15 MB).
❌Lower PassMark per dollar, at 3.9 vs 17.8 PassMark/$ ($2,702 MSRP vs $583 MSRP).

Quick Answers

So, is Xeon E-2126G better than Core i7-5930K?

Not really, because they are built for different jobs. Xeon E-2126G makes more sense for workstation-style multi-core throughput, while Core i7-5930K 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 E-2126G is the stronger fit. You are getting 0.7% better PassMark, backed by 6 cores and 6 threads.

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

Xeon E-2126G is still the much better call for a fresh build. Xeon E-2126G comes in 363.5% more expensive on MSRP at $2,702 MSRP versus $583 MSRP, and it still gives you 0.7% better PassMark. Core i7-5930K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2014 platform. Even with 360.4% better value on paper (17.8 vs 3.9 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2011.

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

Xeon E-2126G makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2014) and more multi-core headroom with 6 cores / 6 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-5930K vs Xeon E-2126G Technical Specifications

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

Core i7-5930K

The Core i7-5930K is manufactured by Intel. It was released in 1 September 2014 (11 years ago). It is based on the Haswell-E (2014) architecture. It features 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 3.7 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 10,369 points. Launch price was $613.

Xeon E-2126G

The Xeon E-2126G is manufactured by Intel. It was released in 12 July 2018 (7 years ago). It is based on the Coffee Lake-S WS (2018−2019) architecture. It features 6 cores and 6 threads. Base frequency is 3.3 GHz, with boost up to 4.5 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 80 Watt. Memory support: DDR4-2666. Passmark benchmark score: 10,437 points. Launch price was $255.

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Processing Power

The Core i7-5930K packs 6 cores / 12 threads, matching the Xeon E-2126G's 6 cores. Boost clocks reach 3.7 GHz on the Core i7-5930K versus 4.5 GHz on the Xeon E-2126G — a 19.5% clock advantage for the Xeon E-2126G (base: 3.5 GHz vs 3.3 GHz). The Core i7-5930K uses the Haswell-E (2014) architecture (22 nm), while the Xeon E-2126G uses Coffee Lake-S WS (2018−2019) (14 nm). In PassMark, the Core i7-5930K scores 10,369 against the Xeon E-2126G's 10,437 — a 0.7% lead for the Xeon E-2126G. L3 cache: 15 MB (total) on the Core i7-5930K vs 12 MB (total) on the Xeon E-2126G.

Feature	Core i7-5930K	Xeon E-2126G
Cores / Threads	6 / 12	6 / 6
Boost Clock	3.7 GHz	4.5 GHz+22%
Base Clock	3.5 GHz+6%	3.3 GHz
L3 Cache	15 MB (total)+25%	12 MB (total)
L2 Cache	256 kB (per core)	256 kB (per core)
Process	22 nm	14 nm-36%
Architecture	Haswell-E (2014)	Coffee Lake-S WS (2018−2019)
PassMark	10,369	10,437
Geekbench 6 Single	1,000	—
Geekbench 6 Multi	6,000	—

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Memory & Platform

The Core i7-5930K uses the LGA2011 socket (PCIe 3.0), while the Xeon E-2126G uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-5930K	Xeon E-2126G
Socket	LGA2011	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	64 GB	—
RAM Channels	4	—
ECC Support	No	—
PCIe Lanes	40	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i7-5930K) / not specified (Xeon E-2126G). Primary use case: Core i7-5930K targets High End Desktop. Direct competitor: Core i7-5930K rivals Ryzen 5 1600.

Feature	Core i7-5930K	Xeon E-2126G
Integrated GPU	No	—
IGPU Model	None	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	High End Desktop	—

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Value Analysis

At launch, the Core i7-5930K was priced at $583, while the Xeon E-2126G came in at $2702. On launch pricing ($583 vs $2702), Core i7-5930K was $2119 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-5930K delivers 17.8 pts/$ vs 3.9 pts/$ for the Xeon E-2126G — making the Core i7-5930K the 128.6% better value option.

Feature	Core i7-5930K	Xeon E-2126G
MSRP	$583-78%	$2702
Performance per Dollar	17.8+356%	3.9
Release Date	2014	2018

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