Core i5-12400F vs Core i9-10900KF

CPU

GPU

Core i5-12400F

6 Cores12 Thrd65 WWMax: 4.4 GHz2022

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Core i9-10900KF

10 Cores20 Thrd125 WWMax: 5.2 GHz2020

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Core i5-12400F vs Core i9-10900KF Performance Spectrum

Core i5-12400F

6 / 12

19,532

0.0%

22,231

+13.8%

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.

Core i5-12400F vs Core i9-10900KF 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 i5-12400F vs Core i9-10900KF: Pros, Cons & Final Verdict

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

Core i5-12400F

2022

Why buy it

✅Costs $335 less on MSRP ($174 MSRP vs $509 MSRP).
✅Delivers 157.0% more PassMark for each dollar spent, at 112.3 vs 43.7 PassMark/$ ($174 MSRP vs $509 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of LGA1200 and DDR4.
✅25% more PCIe lanes (20 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-10900KF across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (657 vs 9,261).

Core i9-10900KF

2020

Why buy it

✅Better for gaming: +15.7% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark per dollar, at 43.7 vs 112.3 PassMark/$ ($509 MSRP vs $174 MSRP).
❌92.3% higher power demand at 125W vs 65W.
❌Older platform position on LGA1200 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Quick Answers

So, is Core i9-10900KF better than Core i5-12400F?

Yes. Core i9-10900KF is the better all-around CPU here. It gives you a 15.7% average FPS lead across 50 shared CPU game tests in our data, 1309.6% better Geekbench multi-core, and 13.8% higher PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i9-10900KF is the better pick. According to our tests, it delivers 15.7% 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 i9-10900KF is the stronger fit. You are getting 1309.6% better Geekbench multi-core, backed by 10 cores and 20 threads.

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

Core i9-10900KF is still the faster CPU overall, but Core i5-12400F is easier to justify if budget matters more than peak performance. Core i9-10900KF comes in 192.5% more expensive on MSRP at $509 MSRP versus $174 MSRP, and it still gives you a 15.7% average FPS lead across 50 shared CPU game tests in our data. Core i5-12400F is also 157.0% better value on MSRP (112.3 vs 43.7 PassMark/$), which is why it can still make sense for tighter-budget builds on paper. That said, if you already own a compatible LGA1700 + DDR5 setup, Core i5-12400F can still make sense as a platform-matched option because it avoids a motherboard and RAM swap.

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 2020) and a healthier platform with LGA1700 and DDR5 instead of LGA1200. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs Core i9-10900KF Technical Specifications

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

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.

Core i9-10900KF

The Core i9-10900KF 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 10 cores and 20 threads. Base frequency is 3.7 GHz, with boost up to 5.2 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2933. Passmark benchmark score: 22,231 points. Launch price was $509.

⚡

Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Core i9-10900KF offers 10 cores / 20 threads — the Core i9-10900KF has 4 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 5.2 GHz on the Core i9-10900KF — a 16.7% clock advantage for the Core i9-10900KF (base: 2.5 GHz vs 3.7 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Core i9-10900KF uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core i5-12400F scores 19,532 against the Core i9-10900KF's 22,231 — a 12.9% lead for the Core i9-10900KF. Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 1,767, a 3.9% lead for the Core i9-10900KF that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 9,261 (173.5% advantage for the Core i9-10900KF). L3 cache: 18 MB (total) on the Core i5-12400F vs 20 MB (total) on the Core i9-10900KF.

Feature	Core i5-12400F	Core i9-10900KF
Cores / Threads	6 / 12	10 / 20+67%
Boost Clock	4.4 GHz	5.2 GHz+18%
Base Clock	2.5 GHz	3.7 GHz+48%
L3 Cache	18 MB (total)	20 MB (total)+11%
L2 Cache	1.25 MB (per core)+400%	256 kB (per core)
Process	Intel 7 nm-50%	14 nm
Architecture	Alder Lake-S (2022)	Comet Lake (2020−2025)
PassMark	19,532	22,231+14%
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	1,767+4%
Geekbench 6 Multi	657	9,261+1310%

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Core i9-10900KF uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR4-2933 on the Core i9-10900KF — the Core i5-12400F supports 63.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 16 (Core i9-10900KF) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and LGA1200 (Core i9-10900KF).

Feature	Core i5-12400F	Core i9-10900KF
Socket	LGA1700	LGA1200
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR5-4800, DDR4-3200+64%	DDR4-2933
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	20+25%	16

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs VT-x, VT-d (Core i9-10900KF). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Core i9-10900KF
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	VT-x, VT-d
Target Use	Gaming Performance/Value	—

💰

Value Analysis

At launch, the Core i5-12400F was priced at $174, while the Core i9-10900KF came in at $509. On launch pricing ($174 vs $509), Core i5-12400F was $335 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 43.7 pts/$ for the Core i9-10900KF — making the Core i5-12400F the 88% better value option.

Feature	Core i5-12400F	Core i9-10900KF
MSRP	$174-66%	$509
Performance per Dollar	112.3+157%	43.7
Release Date	2022	2020

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