Atom C3808 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 C3808 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 C3808 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 C3808

2017

Why buy it

✅Draws 25W instead of 65W, a 40W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
❌Lower PassMark (5,671 vs 19,532).
❌Smaller total L3 cache (12 MB vs 18 MB).
❌Older platform position on FCBGA1310 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Why buy it

✅Better for gaming: +73.1% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (18 MB vs 12 MB).
✅Newer platform on LGA1700 with DDR5 support instead of FCBGA1310 and DDR4.
✅66.7% more PCIe lanes (20 vs 12) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Atom C3808.

Trade-offs

❌Launch MSRP is still $174 MSRP, while Atom C3808 mostly shows up through inconsistent older-market listings.
❌160% higher power demand at 65W vs 25W.

Quick Answers

So, is Core i5-12400F better than Atom C3808?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 73.1% average FPS lead across 50 shared CPU game tests in our data, 244.4% 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 i5-12400F is the better pick. According to our tests, it delivers 73.1% 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 244.4% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 50% larger total L3 cache (18 MB vs 12 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 $174 MSRP versus unclear MSRP, and it still gives you a 73.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (112.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i5-12400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2017), a healthier platform with LGA1700 and DDR5 instead of FCBGA1310, 50% larger total L3 cache (18 MB vs 12 MB), and more multi-core headroom with 6 cores / 12 threads instead of 12/12. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Atom C3808 vs Core i5-12400F Technical Specifications

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

Atom C3808

The Atom C3808 is manufactured by Intel. It was released in 15 August 2017 (8 years ago). It is based on the Goldmont (2016−2017) architecture. It features 12 cores and 12 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 25 Watt. Memory support: DDR4: 2133. Passmark benchmark score: 5,671 points. Launch price was $369.

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 C3808 packs 12 cores / 12 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Atom C3808 has 6 more cores. Boost clocks reach 2 GHz on the Atom C3808 versus 4.4 GHz on the Core i5-12400F — a 75% clock advantage for the Core i5-12400F (base: 2 GHz vs 2.5 GHz). The Atom C3808 uses the Goldmont (2016−2017) architecture (14 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Atom C3808 scores 5,671 against the Core i5-12400F's 19,532 — a 110% lead for the Core i5-12400F. L3 cache: 12 MB on the Atom C3808 vs 18 MB (total) on the Core i5-12400F.

Feature	Atom C3808	Core i5-12400F
Cores / Threads	12 / 12+100%	6 / 12
Boost Clock	2 GHz	4.4 GHz+120%
Base Clock	2 GHz	2.5 GHz+25%
L3 Cache	12 MB	18 MB (total)+50%
L2 Cache	12 MB+860%	1.25 MB (per core)
Process	14 nm	Intel 7 nm-50%
Architecture	Goldmont (2016−2017)	Alder Lake-S (2022)
PassMark	5,671	19,532+244%
Cinebench R23 Multi	—	12,380
Geekbench 6 Single	—	1,700
Geekbench 6 Multi	—	657

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Memory & Platform

The Atom C3808 uses the FCBGA1310 socket (PCIe 3.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 on the Atom C3808 versus DDR5-4800, DDR4-3200 on the Core i5-12400F — the Core i5-12400F supports 125% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom C3808 supports up to 256 GB of RAM compared to 128 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Atom C3808) vs 20 (Core i5-12400F) — the Core i5-12400F offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel FCBGA1310 (Atom C3808) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Feature	Atom C3808	Core i5-12400F
Socket	FCBGA1310	LGA1700
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2133	DDR5-4800, DDR4-3200+125%
Max RAM Capacity	256 GB+100%	128 GB
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	12	20+67%

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Advanced Features

Virtualization: not specified (Atom C3808) / VT-x, VT-d, EPT (Core i5-12400F). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.