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 i5-10400F vs Core i7-3960X Extreme Edition 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 i5-10400F vs Core i7-3960X Extreme Edition: Pros, Cons & Final Verdict

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

Core i5-10400F

2020

Why buy it

✅Better for gaming: +22.3% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $830 less on MSRP ($160 MSRP vs $990 MSRP).
✅Delivers 547.0% more PassMark for each dollar spent, at 81.4 vs 12.6 PassMark/$ ($160 MSRP vs $990 MSRP).
✅Draws 65W instead of 130W, a 65W reduction.
✅Includes a boxed cooler (Yes), unlike Core i7-3960X Extreme Edition.

Trade-offs

❌Smaller total L3 cache (12 MB vs 15 MB).

Core i7-3960X Extreme Edition

2011

Why buy it

✅+25% larger total L3 cache (15 MB vs 12 MB).
✅150% more PCIe lanes (40 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (12,460 vs 13,029).
❌Lower PassMark per dollar, at 12.6 vs 81.4 PassMark/$ ($990 MSRP vs $160 MSRP).
❌100% higher power demand at 130W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i5-10400F better than Core i7-3960X Extreme Edition?

Yes. Core i5-10400F is the better all-around CPU here. It gives you a 22.3% average FPS lead across 50 shared CPU game tests in our data, 4.6% 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, Core i5-10400F is the better pick. According to our tests, it delivers 22.3% 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 i5-10400F is the stronger fit. You are getting 4.6% better PassMark, backed by 6 cores and 12 threads.

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

Core i5-10400F is the better buy right now. Core i5-10400F comes in $830 cheaper on MSRP at $160 MSRP versus $990 MSRP, and it still gives you a 22.3% average FPS lead across 50 shared CPU game tests in our data. It is also 547.0% better value on MSRP (81.4 vs 12.6 PassMark/$), 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 i5-10400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2011) and more multi-core headroom with 6 cores / 12 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-10400F vs Core i7-3960X Extreme Edition Technical Specifications

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

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

Core i7-3960X Extreme Edition

The Core i7-3960X Extreme Edition is manufactured by Intel. It was released in 14 November 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 6 cores and 12 threads. Max frequency: 3.3 GHz. L3 cache: 15 MB. L2 cache: 1,536 kB. Built on 32 nm process technology. Thermal design power (TDP): 130 Watt. Passmark benchmark score: 12,460 points. Launch price was $149.

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Processing Power

Both the Core i5-10400F and Core i7-3960X Extreme Edition share an identical 6-core/12-thread configuration. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 3.3 GHz on the Core i7-3960X Extreme Edition — a 26.3% clock advantage for the Core i5-10400F. The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Core i7-3960X Extreme Edition uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core i5-10400F scores 13,029 against the Core i7-3960X Extreme Edition's 12,460 — a 4.5% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 1,454 vs 800, a 58% lead for the Core i5-10400F that directly translates to higher frame rates. L3 cache: 12 MB (total) on the Core i5-10400F vs 15 MB on the Core i7-3960X Extreme Edition.

Feature	Core i5-10400F	Core i7-3960X Extreme Edition
Cores / Threads	6 / 12	6 / 12
Boost Clock	4.3 GHz+30%	3.3 GHz
Base Clock	2.9 GHz	—
L3 Cache	12 MB (total)	15 MB+25%
L2 Cache	256K (per core)	1,536 kB+500%
Process	14 nm-56%	32 nm
Architecture	Comet Lake (2020−2025)	Sandy Bridge (2011−2013)
PassMark	13,029+5%	12,460
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454+82%	800
Geekbench 6 Multi	5,783	—

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Memory & Platform

Maximum memory speed reaches DDR4-2666 on the Core i5-10400F versus DDR3-1600 on the Core i7-3960X Extreme Edition — the Core i5-10400F supports 66.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 64 GB — 100% more capacity for professional workloads. Memory channels: 2 (Core i5-10400F) vs 4 (Core i7-3960X Extreme Edition). PCIe lanes: 16 (Core i5-10400F) vs 40 (Core i7-3960X Extreme Edition) — the Core i7-3960X Extreme Edition offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F) and X79 (Core i7-3960X Extreme Edition).

Feature	Core i5-10400F	Core i7-3960X Extreme Edition
Socket	LGA1200	—
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2666+67%	DDR3-1600
Max RAM Capacity	128 GB+100%	64 GB
RAM Channels	2	4+100%
ECC Support	No	No
PCIe Lanes	16	40+150%

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Advanced Features

Only the Core i7-3960X Extreme Edition has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i5-10400F) vs VT-x, VT-d, EPT (Core i7-3960X Extreme Edition). Primary use case: Core i5-10400F targets Gaming, Core i7-3960X Extreme Edition targets HEDT Desktop. Direct competitor: Core i5-10400F rivals Ryzen 5 3600; Core i7-3960X Extreme Edition rivals FX-8350.

Feature	Core i5-10400F	Core i7-3960X Extreme Edition
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x, VT-d, EPT
Target Use	Gaming	HEDT Desktop

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Value Analysis

At launch, the Core i5-10400F was priced at $160, while the Core i7-3960X Extreme Edition came in at $990. On launch pricing ($160 vs $990), Core i5-10400F was $830 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-10400F delivers 81.4 pts/$ vs 12.6 pts/$ for the Core i7-3960X Extreme Edition — making the Core i5-10400F the 146.5% better value option.

Feature	Core i5-10400F	Core i7-3960X Extreme Edition
MSRP	$160-84%	$990
Performance per Dollar	81.4+546%	12.6
Release Date	2020	2011

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