Core 2 Quad Q9400 vs Core i5-10400F

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 2 Quad Q9400 vs Core i5-10400F 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 2 Quad Q9400 vs Core i5-10400F: Pros, Cons & Final Verdict

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

Core 2 Quad Q9400

2008

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (2,160 vs 13,029).
❌Lower PassMark per dollar, at 9.4 vs 81.4 PassMark/$ ($229 MSRP vs $160 MSRP).
❌46.2% higher power demand at 95W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +239.9% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $69 less on MSRP ($160 MSRP vs $229 MSRP).
✅Delivers 763.3% more PassMark for each dollar spent, at 81.4 vs 9.4 PassMark/$ ($160 MSRP vs $229 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Core i5-10400F better than Core 2 Quad Q9400?

Yes. Core i5-10400F is the better all-around CPU here. It gives you a 239.9% average FPS lead across 50 shared CPU game tests in our data, 503.2% 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 239.9% 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 503.2% 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 $69 cheaper on MSRP at $160 MSRP versus $229 MSRP, and it still gives you a 239.9% average FPS lead across 50 shared CPU game tests in our data. It is also 763.3% better value on MSRP (81.4 vs 9.4 PassMark/$), 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 2008) and more multi-core headroom with 6 cores / 12 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Quad Q9400 vs Core i5-10400F Technical Specifications

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

Core 2 Quad Q9400

The Core 2 Quad Q9400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 2.67 GHz. L3 cache: 0 kB. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 2,160 points. Launch price was $249.

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.

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Processing Power

The Core 2 Quad Q9400 packs 4 cores / 4 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 2 more cores. Boost clocks reach 2.67 GHz on the Core 2 Quad Q9400 versus 4.3 GHz on the Core i5-10400F — a 46.8% clock advantage for the Core i5-10400F (base: 2.66 GHz vs 2.9 GHz). The Core 2 Quad Q9400 uses the Yorkfield (2007−2009) architecture (45 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core 2 Quad Q9400 scores 2,160 against the Core i5-10400F's 13,029 — a 143.1% lead for the Core i5-10400F. L3 cache: 0 kB on the Core 2 Quad Q9400 vs 12 MB (total) on the Core i5-10400F.

Feature	Core 2 Quad Q9400	Core i5-10400F
Cores / Threads	4 / 4	6 / 12+50%
Boost Clock	2.67 GHz	4.3 GHz+61%
Base Clock	2.66 GHz	2.9 GHz+9%
L3 Cache	0 kB	12 MB (total)
L2 Cache	6 MB (total)	256K (per core)+4167%
Process	45 nm	14 nm-69%
Architecture	Yorkfield (2007−2009)	Comet Lake (2020−2025)
PassMark	2,160	13,029+503%
Cinebench R23 Multi	—	8,191
Geekbench 6 Single	—	1,454
Geekbench 6 Multi	—	5,783

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Memory & Platform

The Core 2 Quad Q9400 uses the LGA775 socket (PCIe 1.1), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1066 on the Core 2 Quad Q9400 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 150.1% 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 8 GB — 1500% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Quad Q9400) vs 16 (Core i5-10400F) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core 2 Quad Q9400	Core i5-10400F
Socket	LGA775	LGA1200
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR3-1066	DDR4-2666+150%
Max RAM Capacity	8 GB	128 GB+1500%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x (Core 2 Quad Q9400) vs VT-x, VT-d (Core i5-10400F). Primary use case: Core 2 Quad Q9400 targets Desktop, Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.

Feature	Core 2 Quad Q9400	Core i5-10400F
Integrated GPU	No	No
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x	VT-x, VT-d
Target Use	Desktop	Gaming

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Value Analysis

At launch, the Core 2 Quad Q9400 was priced at $229, while the Core i5-10400F came in at $160. On launch pricing ($229 vs $160), Core i5-10400F was $69 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Quad Q9400 delivers 9.4 pts/$ vs 81.4 pts/$ for the Core i5-10400F — making the Core i5-10400F the 158.5% better value option.

Feature	Core 2 Quad Q9400	Core i5-10400F
MSRP	$229	$160-30%
Performance per Dollar	9.4	81.4+766%
Release Date	2008	2020

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