Athlon X2 QL-66 vs Core i5-10400F

CPU

GPU

Athlon X2 QL-66

2 Cores2 Thrd1 WWMax: 2.2 GHz2009

Similar parts

·······

Buy on Amazon

Core i5-10400F

6 Cores12 Thrd65 WWMax: 4.3 GHz2020

Core family

·······

Buy on Amazon

Athlon X2 QL-66 vs Core i5-10400F Performance Spectrum

Athlon X2 QL-66

2 / 2

1,695

0.0%

Ryzen Threadripper PRO 5945WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core i5-10400F

6 / 12

13,029

+668.7%

About PassMark

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.

Athlon X2 QL-66 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.

Athlon X2 QL-66 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.

Athlon X2 QL-66

2009

Why buy it

✅Costs $10 less on MSRP ($150 MSRP vs $160 MSRP).
✅Draws 1W instead of 65W, a 64W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (1,695 vs 13,029).
❌Lower PassMark per dollar, at 11.3 vs 81.4 PassMark/$ ($150 MSRP vs $160 MSRP).
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +326.9% higher average FPS across 50 shared CPU benchmark tests.
✅Delivers 620.6% more PassMark for each dollar spent, at 81.4 vs 11.3 PassMark/$ ($160 MSRP vs $150 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Athlon X2 QL-66.

Trade-offs

❌
6.7% HIGHER MSRP
$160 MSRPvs$150 MSRP
❌6400% higher power demand at 65W vs 1W.

Quick Answers

So, is Core i5-10400F better than Athlon X2 QL-66?

Yes. Core i5-10400F is the better all-around CPU here. It gives you a 326.9% average FPS lead across 50 shared CPU game tests in our data, 668.7% 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 326.9% 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 668.7% 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 6.7% more expensive on MSRP at $160 MSRP versus $150 MSRP, and it still gives you a 326.9% average FPS lead across 50 shared CPU game tests in our data. It is also 620.6% better value on MSRP (81.4 vs 11.3 PassMark/$), 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 i5-10400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2009) and more multi-core headroom with 6 cores / 12 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon X2 QL-66 vs Core i5-10400F Technical Specifications

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

Athlon X2 QL-66

The Athlon X2 QL-66 is manufactured by AMD. It was released in 2009-01-01. It is based on the Lion (2008−2009) architecture. It features 2 cores and 2 threads. Max frequency: 2.2 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,695 points. Launch price was $149.

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.

⚡

Processing Power

The Athlon X2 QL-66 packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 2.2 GHz on the Athlon X2 QL-66 versus 4.3 GHz on the Core i5-10400F — a 64.6% clock advantage for the Core i5-10400F. The Athlon X2 QL-66 uses the Lion (2008−2009) architecture (65 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Athlon X2 QL-66 scores 1,695 against the Core i5-10400F's 13,029 — a 154% lead for the Core i5-10400F.

Feature	Athlon X2 QL-66	Core i5-10400F
Cores / Threads	2 / 2	6 / 12+200%
Boost Clock	2.2 GHz	4.3 GHz+95%
Base Clock	—	2.9 GHz
L3 Cache	—	12 MB (total)
L2 Cache	1 MB	256K (per core)+25500%
Process	65 nm	14 nm-78%
Architecture	Lion (2008−2009)	Comet Lake (2020−2025)
PassMark	1,695	13,029+669%
Cinebench R23 Multi	—	8,191
Geekbench 6 Single	—	1,454
Geekbench 6 Multi	—	5,783

🧠

Memory & Platform

The Athlon X2 QL-66 uses the S1g2 socket (PCIe 2.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Athlon X2 QL-66 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 299.7% 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 (Athlon X2 QL-66) vs 16 (Core i5-10400F) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD S1 (Athlon X2 QL-66) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Feature	Athlon X2 QL-66	Core i5-10400F
Socket	S1g2	LGA1200
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR2-667	DDR4-2666+300%
Max RAM Capacity	8 GB	128 GB+1500%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

🔧

Advanced Features

Virtualization: not specified (Athlon X2 QL-66) / VT-x, VT-d (Core i5-10400F). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.

Feature	Athlon X2 QL-66	Core i5-10400F
Integrated GPU	No	No
Unlocked	—	No
AVX-512	—	No
Virtualization	—	VT-x, VT-d
Target Use	—	Gaming

💰

Value Analysis

At launch, the Athlon X2 QL-66 was priced at $150, while the Core i5-10400F came in at $160. On launch pricing ($150 vs $160), Athlon X2 QL-66 was $10 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon X2 QL-66 delivers 11.3 pts/$ vs 81.4 pts/$ for the Core i5-10400F — making the Core i5-10400F the 151.3% better value option.

Feature	Athlon X2 QL-66	Core i5-10400F
MSRP	$150-6%	$160
Performance per Dollar	11.3	81.4+620%
Release Date	2009	2020

Search Athlon X2 QL-66 on Amazon

Search Core i5-10400F on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.