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.

Celeron 420 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.

Celeron 420 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.

Celeron 420

2007

Why buy it

✅Costs $121 less on MSRP ($39 MSRP vs $160 MSRP).
✅Draws 35W instead of 65W, a 30W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower PassMark (425 vs 13,029).
❌Lower PassMark per dollar, at 10.9 vs 81.4 PassMark/$ ($39 MSRP vs $160 MSRP).
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +1477.4% higher average FPS across 50 shared CPU benchmark tests.
✅Delivers 647.3% more PassMark for each dollar spent, at 81.4 vs 10.9 PassMark/$ ($160 MSRP vs $39 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Celeron 420.

Trade-offs

❌
310.3% HIGHER MSRP
$160 MSRPvs$39 MSRP
❌85.7% higher power demand at 65W vs 35W.

Quick Answers

So, is Core i5-10400F better than Celeron 420?

Yes. Core i5-10400F is the better all-around CPU here. It gives you a 1477.4% average FPS lead across 50 shared CPU game tests in our data, 2965.6% 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 1477.4% 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 2965.6% 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 310.3% more expensive on MSRP at $160 MSRP versus $39 MSRP, and it still gives you a 1477.4% average FPS lead across 50 shared CPU game tests in our data. It is also 647.3% better value on MSRP (81.4 vs 10.9 PassMark/$), 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 2007) and more multi-core headroom with 6 cores / 12 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron 420 vs Core i5-10400F Technical Specifications

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

Celeron 420

The Celeron 420 is manufactured by Intel. It was released in 3 June 2007 (18 years ago). It is based on the Conroe-L (2007−2008) architecture. It features 1 cores and 1 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 0 kB. L2 cache: 512 kB (total). Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 35 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 425 points. Launch price was $23.

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 Celeron 420 packs 1 cores / 1 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 5 more cores. Boost clocks reach 1.6 GHz on the Celeron 420 versus 4.3 GHz on the Core i5-10400F — a 91.5% clock advantage for the Core i5-10400F (base: 1.6 GHz vs 2.9 GHz). The Celeron 420 uses the Conroe-L (2007−2008) architecture (65 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Celeron 420 scores 425 against the Core i5-10400F's 13,029 — a 187.4% lead for the Core i5-10400F. L3 cache: 0 kB on the Celeron 420 vs 12 MB (total) on the Core i5-10400F.

Feature	Celeron 420	Core i5-10400F
Cores / Threads	1 / 1	6 / 12+500%
Boost Clock	1.6 GHz	4.3 GHz+169%
Base Clock	1.6 GHz	2.9 GHz+81%
L3 Cache	0 kB	12 MB (total)
L2 Cache	512 kB (total)+100%	256K (per core)
Process	65 nm	14 nm-78%
Architecture	Conroe-L (2007−2008)	Comet Lake (2020−2025)
PassMark	425	13,029+2966%
Cinebench R23 Multi	—	8,191
Geekbench 6 Single	—	1,454
Geekbench 6 Multi	—	5,783

🧠

Memory & Platform

The Celeron 420 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 DDR2-800 on the Celeron 420 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 233.3% 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 16 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Celeron 420) vs 16 (Core i5-10400F) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: 945,G31,G41 (Celeron 420) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Feature	Celeron 420	Core i5-10400F
Socket	LGA775	LGA1200
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR2-800	DDR4-2666+233%
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: No (Celeron 420) vs VT-x, VT-d (Core i5-10400F). Primary use case: Celeron 420 targets Budget, Core i5-10400F targets Gaming. Direct competitor: Celeron 420 rivals Pentium 4 2.80; Core i5-10400F rivals Ryzen 5 3600.

Feature	Celeron 420	Core i5-10400F
Integrated GPU	No	No
Unlocked	No	No
AVX-512	No	No
Virtualization	No	VT-x, VT-d
Target Use	Budget	Gaming

💰

Value Analysis

At launch, the Celeron 420 was priced at $39, while the Core i5-10400F came in at $160. On launch pricing ($39 vs $160), Celeron 420 was $121 cheaper. In terms of value on MSRP (PassMark points per dollar), the Celeron 420 delivers 10.9 pts/$ vs 81.4 pts/$ for the Core i5-10400F — making the Core i5-10400F the 152.8% better value option.

Feature	Celeron 420	Core i5-10400F
MSRP	$39-76%	$160
Performance per Dollar	10.9	81.4+647%
Release Date	2007	2020

Search Celeron 420 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.