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 i5-10400F vs Core i9-12900KF 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 i5-10400F vs Core i9-12900KF: Pros, Cons & Final Verdict

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

Core i5-10400F

2020

Why buy it

✅Costs $404 less on MSRP ($160 MSRP vs $564 MSRP).
✅Delivers 12.4% more PassMark for each dollar spent, at 81.4 vs 72.4 PassMark/$ ($160 MSRP vs $564 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅Includes a boxed cooler (Yes), unlike Core i9-12900KF.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-12900KF across 50 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (8,191 vs 27,472).
❌Smaller total L3 cache (12 MB vs 30 MB).
❌Older platform position on LGA1200 with DDR4, while Core i9-12900KF moves to LGA1700 and DDR5.

Core i9-12900KF

2021

Why buy it

✅Better for gaming: +42.4% higher average FPS across 50 shared CPU benchmark tests.
✅+150% larger total L3 cache (30 MB vs 12 MB).
✅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

❌Lower PassMark per dollar, at 72.4 vs 81.4 PassMark/$ ($564 MSRP vs $160 MSRP).
❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i9-12900KF better than Core i5-10400F?

Yes. Core i9-12900KF is the better all-around CPU here. It gives you a 42.4% average FPS lead across 50 shared CPU game tests in our data, 235.4% better Cinebench R23 multi-core, 213.6% higher 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 i9-12900KF is the better pick. According to our tests, it delivers 42.4% 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 i9-12900KF is the stronger fit. You are getting 235.4% better Cinebench R23 multi-core, backed by 16 cores and 24 threads. It also has the larger cache pool with 150% larger total L3 cache (30 MB vs 12 MB).

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

Core i9-12900KF is still the faster CPU overall, but Core i5-10400F is easier to justify if budget matters more than peak performance. Core i9-12900KF comes in 252.5% more expensive on MSRP at $564 MSRP versus $160 MSRP, and it still gives you a 42.4% average FPS lead across 50 shared CPU game tests in our data. Core i5-10400F is also 12.4% better value on MSRP (81.4 vs 72.4 PassMark/$), which is why it can still make sense for tighter-budget builds on paper. That said, if you already own a compatible LGA1200 + DDR4 setup, Core i5-10400F 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 i9-12900KF makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020), a healthier platform with LGA1700 and DDR5 instead of LGA1200, 150% larger total L3 cache (30 MB vs 12 MB), and more multi-core headroom with 16 cores / 24 threads instead of 6/12. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-10400F vs Core i9-12900KF Technical Specifications

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

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.

Core i9-12900KF

The Core i9-12900KF is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 16 cores and 24 threads. Base frequency is 3.2 GHz, with boost up to 5.2 GHz. L3 cache: 30 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 40,858 points. Launch price was $564.

⚡

Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Core i9-12900KF offers 16 cores / 24 threads — the Core i9-12900KF has 10 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 5.2 GHz on the Core i9-12900KF — a 18.9% clock advantage for the Core i9-12900KF (base: 2.9 GHz vs 3.2 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Core i9-12900KF uses Alder Lake, Golden Cove, Gracemont (2021) (Intel 7 nm). In PassMark, the Core i5-10400F scores 13,029 against the Core i9-12900KF's 40,858 — a 103.3% lead for the Core i9-12900KF. Cinebench R23 multi-core: 8,191 vs 27,472 (108.1% advantage for the Core i9-12900KF). Geekbench 6 single-core — the metric most relevant to gaming — records 1,454 vs 2,585, a 56% lead for the Core i9-12900KF that directly translates to higher frame rates. Multi-core Geekbench: 5,783 vs 15,300 (90.3% advantage for the Core i9-12900KF). L3 cache: 12 MB (total) on the Core i5-10400F vs 30 MB (total) on the Core i9-12900KF.

Feature	Core i5-10400F	Core i9-12900KF
Cores / Threads	6 / 12	16 / 24+167%
Boost Clock	4.3 GHz	5.2 GHz+21%
Base Clock	2.9 GHz	3.2 GHz+10%
L3 Cache	12 MB (total)	30 MB (total)+150%
L2 Cache	256K (per core)+20380%	1.25 MB (per core)
Process	14 nm	Intel 7 nm-50%
Architecture	Comet Lake (2020−2025)	Alder Lake, Golden Cove, Gracemont (2021)
PassMark	13,029	40,858+214%
Cinebench R23 Multi	8,191	27,472+235%
Geekbench 6 Single	1,454	2,585+78%
Geekbench 6 Multi	5,783	15,300+165%

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Core i9-12900KF uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-10400F versus DDR5-4800, DDR4-3200 on the Core i9-12900KF — the Core i9-12900KF supports 80% 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: 16 (Core i5-10400F) vs 20 (Core i9-12900KF) — the Core i9-12900KF offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F) and Z690,Z790,B660,B760 (Core i9-12900KF).

Feature	Core i5-10400F	Core i9-12900KF
Socket	LGA1200	LGA1700
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666	DDR5-4800, DDR4-3200+80%
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	20+25%

🔧

Advanced Features

Only the Core i9-12900KF has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i5-10400F) vs VT-x, VT-d, EPT (Core i9-12900KF). Primary use case: Core i5-10400F targets Gaming, Core i9-12900KF targets Extreme Gaming / Content Creation. Direct competitor: Core i5-10400F rivals Ryzen 5 3600; Core i9-12900KF rivals Ryzen 9 5950X.

Feature	Core i5-10400F	Core i9-12900KF
Integrated GPU	No	No
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x, VT-d, EPT
Target Use	Gaming	Extreme Gaming / Content Creation

💰

Value Analysis

At launch, the Core i5-10400F was priced at $160, while the Core i9-12900KF came in at $564. On launch pricing ($160 vs $564), Core i5-10400F was $404 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-10400F delivers 81.4 pts/$ vs 72.4 pts/$ for the Core i9-12900KF — making the Core i5-10400F the 11.7% better value option.

Feature	Core i5-10400F	Core i9-12900KF
MSRP	$160-72%	$564
Performance per Dollar	81.4+12%	72.4
Release Date	2020	2021

Search Core i5-10400F on Amazon

Search Core i9-12900KF 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.