Atom x7405C vs Core i5-12400F

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.

Atom x7405C vs Core i5-12400F 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.

Atom x7405C vs Core i5-12400F: Pros, Cons & Final Verdict

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

Atom x7405C

2024

Why buy it

✅Draws 12W instead of 65W, a 53W reduction.
✅Integrated graphics onboard with Intel UHD Graphics, while Core i5-12400F needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
❌Lower PassMark (5,218 vs 19,532).
❌Smaller total L3 cache (6 MB vs 18 MB).
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Why buy it

✅Better for gaming: +138.3% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (18 MB vs 6 MB).
✅122.2% more PCIe lanes (20 vs 9) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Atom x7405C.

Trade-offs

❌Launch MSRP is still $174 MSRP, while Atom x7405C mostly shows up through inconsistent older-market listings.
❌441.7% higher power demand at 65W vs 12W.
❌No integrated graphics, while Atom x7405C can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-12400F better than Atom x7405C?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 138.3% average FPS lead across 50 shared CPU game tests in our data and 274.3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i5-12400F is the better pick. According to our tests, it delivers 138.3% 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 i5-12400F is the stronger fit. You are getting 274.3% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 200% larger total L3 cache (18 MB vs 6 MB).

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

Core i5-12400F is the better buy right now. Core i5-12400F comes in at an unclear MSRP at $174 MSRP versus unclear MSRP, and it still gives you a 138.3% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (112.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Atom x7405C makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2022). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Atom x7405C vs Core i5-12400F Technical Specifications

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

Atom x7405C

The Atom x7405C is manufactured by Intel. It was released in 8 April 2024 (1 year ago). It is based on the Amston Lake (2024−2025) architecture. It features 4 cores and 4 threads. Base frequency is 1.7 GHz, with boost up to 3.4 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (total). Built on 10 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 12 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 5,218 points. Launch price was $57.

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

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Processing Power

The Atom x7405C packs 4 cores / 4 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Core i5-12400F has 2 more cores. Boost clocks reach 3.4 GHz on the Atom x7405C versus 4.4 GHz on the Core i5-12400F — a 25.6% clock advantage for the Core i5-12400F (base: 1.7 GHz vs 2.5 GHz). The Atom x7405C uses the Amston Lake (2024−2025) architecture (10 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Atom x7405C scores 5,218 against the Core i5-12400F's 19,532 — a 115.7% lead for the Core i5-12400F. L3 cache: 6 MB (total) on the Atom x7405C vs 18 MB (total) on the Core i5-12400F.

Feature	Atom x7405C	Core i5-12400F
Cores / Threads	4 / 4	6 / 12+50%
Boost Clock	3.4 GHz	4.4 GHz+29%
Base Clock	1.7 GHz	2.5 GHz+47%
L3 Cache	6 MB (total)	18 MB (total)+200%
L2 Cache	2 MB (total)+60%	1.25 MB (per core)
Process	10 nm	Intel 7 nm-30%
Architecture	Amston Lake (2024−2025)	Alder Lake-S (2022)
PassMark	5,218	19,532+274%
Cinebench R23 Multi	—	12,380
Geekbench 6 Single	—	1,700
Geekbench 6 Multi	—	657

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Memory & Platform

The Atom x7405C uses the FCBGA1264 socket (PCIe 4.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR5-4800 memory speed. The Core i5-12400F supports up to 128 GB of RAM compared to 16 GB — 700% more capacity for professional workloads. Memory channels: 1 (Atom x7405C) vs 2 (Core i5-12400F). PCIe lanes: 9 (Atom x7405C) vs 20 (Core i5-12400F) — the Core i5-12400F offers 11 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel BGA1264 (Atom x7405C) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Feature	Atom x7405C	Core i5-12400F
Socket	FCBGA1264	LGA1700
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR5-4800	DDR5-4800, DDR4-3200
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	1	2+100%
ECC Support	No	No
PCIe Lanes	9	20+122%

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Advanced Features

Virtualization: not specified (Atom x7405C) / VT-x, VT-d, EPT (Core i5-12400F). The Atom x7405C includes integrated graphics (Intel UHD Graphics), while the Core i5-12400F requires a dedicated GPU. Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.