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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i5-10400F

2020

Why buy it

✅Costs $129 less on MSRP ($160 MSRP vs $289 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅Includes a boxed cooler (Yes), unlike Core i5-12600K.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12600K across 22 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (8,191 vs 17,500).
❌Smaller total L3 cache (12 MB vs 20 MB).
❌Lower PassMark per dollar, at 81.4 vs 95.5 PassMark/$ ($160 MSRP vs $289 MSRP).
❌Older platform position on LGA1200 with DDR4, while Core i5-12600K moves to LGA1700 and DDR5.

Core i5-12600K

2021

Why buy it

✅Better for gaming: +42.2% higher average FPS across 22 shared CPU benchmark tests.
✅+66.7% larger total L3 cache (20 MB vs 12 MB).
✅Delivers 17.2% more PassMark for each dollar spent, at 95.5 vs 81.4 PassMark/$ ($289 MSRP vs $160 MSRP).
✅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

❌
80.6% HIGHER MSRP
$289 MSRPvs$160 MSRP
❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Core i5-12600K

2021

Why buy it

✅Costs $129 less on MSRP ($160 MSRP vs $289 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅Includes a boxed cooler (Yes), unlike Core i5-12600K.

Why buy it

✅Better for gaming: +42.2% higher average FPS across 22 shared CPU benchmark tests.
✅+66.7% larger total L3 cache (20 MB vs 12 MB).
✅Delivers 17.2% more PassMark for each dollar spent, at 95.5 vs 81.4 PassMark/$ ($289 MSRP vs $160 MSRP).
✅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 i5-12600K across 22 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (8,191 vs 17,500).
❌Smaller total L3 cache (12 MB vs 20 MB).
❌Lower PassMark per dollar, at 81.4 vs 95.5 PassMark/$ ($160 MSRP vs $289 MSRP).
❌Older platform position on LGA1200 with DDR4, while Core i5-12600K moves to LGA1700 and DDR5.

Trade-offs

❌
80.6% HIGHER MSRP
$289 MSRPvs$160 MSRP
❌92.3% higher power demand at 125W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i5-12600K better than Core i5-10400F?

Yes. Core i5-12600K is the better overall CPU here. You are getting a 42.2% average FPS lead across 22 shared CPU game tests in our data, 113.6% better Cinebench R23 multi-core, 111.7% higher PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Core i5-12600K is the better pick here. According to our tests, it delivers 42.2% more average FPS across 22 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core i5-12600K is the better fit. You are getting 113.6% better Cinebench R23 multi-core, backed by 10 cores and 16 threads. It also carries the larger cache pool with 66.7% larger total L3 cache (20 MB vs 12 MB).

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

Core i5-12600K is the smarter buy today. Core i5-12600K is 80.6% more expensive on MSRP at $289 MSRP versus $160 MSRP, and it gives you a 42.2% average FPS lead across 22 shared CPU game tests in our data. It is also 17.2% better value on MSRP (95.5 vs 81.4 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play 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 i5-12600K is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020), a healthier platform with LGA1700 and DDR5 instead of LGA1200, 66.7% larger total L3 cache (20 MB vs 12 MB), and more multi-core headroom with 10 cores / 16 threads instead of 6/12. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i5-10400F Benchmark Check

Core i5-12600K Benchmark Check

Path of Exile 2

Preset	Core i5-10400F	Core i5-12600K
1080p
low	192 FPS	311 FPS
medium	152 FPS	292 FPS
high	123 FPS	244 FPS
ultra	100 FPS	191 FPS
1440p
low	153 FPS	267 FPS
medium	119 FPS	223 FPS
high	97 FPS	181 FPS
ultra	79 FPS	145 FPS
4K
low	82 FPS	170 FPS
medium	70 FPS	142 FPS
high	55 FPS	109 FPS
ultra	43 FPS	95 FPS

Open Core i5-10400F Open Core i5-12600K

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-10400F	Core i5-12600K
1080p
low	326 FPS	577 FPS
medium	318 FPS	487 FPS
high	290 FPS	405 FPS
ultra	253 FPS	369 FPS
1440p
low	326 FPS	467 FPS
medium	292 FPS	411 FPS
high	267 FPS	352 FPS
ultra	234 FPS	305 FPS
4K
low	309 FPS	282 FPS
medium	258 FPS	249 FPS
high	235 FPS	233 FPS
ultra	199 FPS	206 FPS

Open Core i5-10400F Open Core i5-12600K

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-10400F	Core i5-12600K
1080p
low	326 FPS	690 FPS
medium	326 FPS	635 FPS
high	326 FPS	561 FPS
ultra	326 FPS	476 FPS
1440p
low	326 FPS	690 FPS
medium	326 FPS	566 FPS
high	326 FPS	495 FPS
ultra	326 FPS	425 FPS
4K
low	326 FPS	510 FPS
medium	326 FPS	426 FPS
high	289 FPS	382 FPS
ultra	229 FPS	321 FPS

Open Core i5-10400F Open Core i5-12600K

League of Legends

League of Legends

Valorant

Preset	Core i5-10400F	Core i5-12600K
1080p
low	326 FPS	690 FPS
medium	326 FPS	690 FPS
high	326 FPS	690 FPS
ultra	326 FPS	644 FPS
1440p
low	326 FPS	690 FPS
medium	326 FPS	689 FPS
high	326 FPS	599 FPS
ultra	326 FPS	526 FPS
4K
low	326 FPS	542 FPS
medium	326 FPS	495 FPS
high	326 FPS	444 FPS
ultra	326 FPS	389 FPS

Open Core i5-10400F Open Core i5-12600K

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-10400F and Core i5-12600K

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 i5-12600K

The Core i5-12600K 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 10 cores and 16 threads. Base frequency is 3.7 GHz, with boost up to 4.9 GHz. L3 cache: 20 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: DDR4, DDR5. Passmark benchmark score: 27,586 points. Launch price was $289.

⚡

Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Core i5-12600K offers 10 cores / 16 threads — the Core i5-12600K has 4 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 4.9 GHz on the Core i5-12600K — a 13% clock advantage for the Core i5-12600K (base: 2.9 GHz vs 3.7 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Core i5-12600K uses Alder Lake, Golden Cove, Gracemont (2021) (Intel 7 nm). In PassMark, the Core i5-10400F scores 13,029 against the Core i5-12600K's 27,586 — a 71.7% lead for the Core i5-12600K. Cinebench R23 multi-core: 8,191 vs 17,500 (72.5% advantage for the Core i5-12600K). Geekbench 6 single-core — the metric most relevant to gaming — records 1,454 vs 2,472, a 51.9% lead for the Core i5-12600K that directly translates to higher frame rates. Multi-core Geekbench: 5,783 vs 11,863 (68.9% advantage for the Core i5-12600K). L3 cache: 12 MB (total) on the Core i5-10400F vs 20 MB (total) on the Core i5-12600K.

Feature	Core i5-10400F	Core i5-12600K
Cores / Threads	6 / 12	10 / 16+67%
Boost Clock	4.3 GHz	4.9 GHz+14%
Base Clock	2.9 GHz	3.7 GHz+28%
L3 Cache	12 MB (total)	20 MB (total)+67%
L2 Cache	256K (per core)	1.25 MB (per core)+400%
Process	14 nm	Intel 7 nm-50%
Architecture	Comet Lake (2020−2025)	Alder Lake, Golden Cove, Gracemont (2021)
PassMark	13,029	27,586+112%
Cinebench R23 Multi	8,191	17,500+114%
Geekbench 6 Single	1,454	2,472+70%
Geekbench 6 Multi	5,783	11,863+105%

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Core i5-12600K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-10400F versus 4800 on the Core i5-12600K — the Core i5-12600K supports 199.7% 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: 16 (Core i5-10400F) vs 20 (Core i5-12600K) — the Core i5-12600K 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,B660 (Core i5-12600K).

Feature	Core i5-10400F	Core i5-12600K
Socket	LGA1200	LGA1700
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666	4800+119900%
Max RAM Capacity	128 GB+104857500%	128
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	20+25%

🔧

Advanced Features

Only the Core i5-12600K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x, VT-d virtualization. The Core i5-12600K includes integrated graphics (Intel UHD Graphics 770), while the Core i5-10400F requires a dedicated GPU. Primary use case: Core i5-10400F targets Gaming, Core i5-12600K targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600; Core i5-12600K rivals Ryzen 5 5600X.

Feature	Core i5-10400F	Core i5-12600K
Integrated GPU	No	Yes
IGPU Model	—	Intel UHD Graphics 770
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x, VT-d
Target Use	Gaming	Gaming

💰

Value Analysis

The Core i5-10400F launched at $160 MSRP, while the Core i5-12600K debuted at $289. On MSRP ($160 vs $289), the Core i5-10400F is $129 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-10400F delivers 81.4 pts/$ vs 95.5 pts/$ for the Core i5-12600K — making the Core i5-12600K the 15.9% better value option.