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 i5-12400F

2022

Why buy it

✅Better for gaming: +73.6% higher average FPS across 4 shared CPU benchmark tests.
✅+20% larger total L3 cache (18 MB vs 15 MB).
✅Costs $443 less on MSRP ($174 MSRP vs $617 MSRP).
✅Delivers 508.8% more PassMark for each dollar spent, at 112.3 vs 18.4 PassMark/$ ($174 MSRP vs $617 MSRP).
✅Draws 65W instead of 140W, a 75W reduction.

Trade-offs

❌Lower Geekbench multi-core (657 vs 5,500).

Core i7-6850K

2016

Why buy it

✅+737.1% higher Geekbench multi-core.
✅100% more PCIe lanes (40 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 4 shared CPU benchmark tests.
❌Smaller total L3 cache (15 MB vs 18 MB).
❌Lower PassMark per dollar, at 18.4 vs 112.3 PassMark/$ ($617 MSRP vs $174 MSRP).
❌115.4% higher power demand at 140W vs 65W.
❌Older platform position on LGA2011 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.

Core i5-12400F

2022

Core i7-6850K

2016

Why buy it

✅Better for gaming: +73.6% higher average FPS across 4 shared CPU benchmark tests.
✅+20% larger total L3 cache (18 MB vs 15 MB).
✅Costs $443 less on MSRP ($174 MSRP vs $617 MSRP).
✅Delivers 508.8% more PassMark for each dollar spent, at 112.3 vs 18.4 PassMark/$ ($174 MSRP vs $617 MSRP).
✅Draws 65W instead of 140W, a 75W reduction.

Why buy it

✅+737.1% higher Geekbench multi-core.
✅100% more PCIe lanes (40 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench multi-core (657 vs 5,500).

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 4 shared CPU benchmark tests.
❌Smaller total L3 cache (15 MB vs 18 MB).
❌Lower PassMark per dollar, at 18.4 vs 112.3 PassMark/$ ($617 MSRP vs $174 MSRP).
❌115.4% higher power demand at 140W vs 65W.
❌Older platform position on LGA2011 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.

Quick Answers

So, is Core i5-12400F better than Core i7-6850K?

It depends on what matters more to you. For gaming, Core i5-12400F is ahead with a 73.6% average FPS lead across 4 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i7-6850K pulls ahead with 737.1% better Geekbench multi-core. Core i5-12400F also has the bigger cache pool with 20% larger total L3 cache (18 MB vs 15 MB).

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

For streaming, content creation, and heavier multitasking, Core i7-6850K is the better fit. You are getting 737.1% better Geekbench multi-core, backed by 6 cores and 12 threads.

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

Core i5-12400F is the smarter buy today. Core i5-12400F is $443 cheaper on MSRP at $174 MSRP versus $617 MSRP, and it gives you a 73.6% average FPS lead across 4 shared CPU game tests in our data. The trade-off is that Core i7-6850K is still stronger for heavier multi-core work with 737.1% better Geekbench multi-core. It is also 508.8% better value on MSRP (112.3 vs 18.4 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Core i5-12400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2016), a healthier platform with LGA1700 and DDR5 instead of LGA2011, and 20% larger total L3 cache (18 MB vs 15 MB). 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 i5-12400F Benchmark Check

Core i7-6850K Benchmark Check

Path of Exile 2

Preset	Core i5-12400F	Core i7-6850K
1080p
low	183 FPS	178 FPS
medium	168 FPS	139 FPS
high	139 FPS	113 FPS
ultra	119 FPS	90 FPS
1440p
low	153 FPS	148 FPS
medium	132 FPS	115 FPS
high	106 FPS	92 FPS
ultra	89 FPS	73 FPS
4K
low	87 FPS	68 FPS
medium	81 FPS	56 FPS
high	64 FPS	44 FPS
ultra	49 FPS	35 FPS

Open Core i5-12400F Open Core i7-6850K

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400F	Core i7-6850K
1080p
low	471 FPS	242 FPS
medium	397 FPS	207 FPS
high	341 FPS	185 FPS
ultra	301 FPS	146 FPS
1440p
low	407 FPS	215 FPS
medium	351 FPS	186 FPS
high	309 FPS	166 FPS
ultra	265 FPS	135 FPS
4K
low	282 FPS	171 FPS
medium	248 FPS	151 FPS
high	229 FPS	134 FPS
ultra	196 FPS	103 FPS

Open Core i5-12400F Open Core i7-6850K

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400F	Core i7-6850K
1080p
low	488 FPS	284 FPS
medium	488 FPS	284 FPS
high	488 FPS	284 FPS
ultra	488 FPS	284 FPS
1440p
low	488 FPS	284 FPS
medium	488 FPS	284 FPS
high	485 FPS	284 FPS
ultra	434 FPS	284 FPS
4K
low	442 FPS	284 FPS
medium	389 FPS	284 FPS
high	337 FPS	284 FPS
ultra	274 FPS	256 FPS

Open Core i5-12400F Open Core i7-6850K

League of Legends

League of Legends

Valorant

Preset	Core i5-12400F	Core i7-6850K
1080p
low	488 FPS	284 FPS
medium	488 FPS	284 FPS
high	488 FPS	284 FPS
ultra	488 FPS	284 FPS
1440p
low	488 FPS	284 FPS
medium	488 FPS	284 FPS
high	488 FPS	284 FPS
ultra	473 FPS	284 FPS
4K
low	488 FPS	284 FPS
medium	450 FPS	284 FPS
high	391 FPS	284 FPS
ultra	330 FPS	284 FPS

Open Core i5-12400F Open Core i7-6850K

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-12400F and Core i7-6850K

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 i7-6850K

The Core i7-6850K is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Broadwell-E (2016) architecture. It features 6 cores and 12 threads. Base frequency is 3.6 GHz, with boost up to 4 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 11,376 points. Launch price was $475.

⚡

Processing Power

Both the Core i5-12400F and Core i7-6850K share an identical 6-core/12-thread configuration. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4 GHz on the Core i7-6850K — a 9.5% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 3.6 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Core i7-6850K uses Broadwell-E (2016) (14 nm). In PassMark, the Core i5-12400F scores 19,532 against the Core i7-6850K's 11,376 — a 52.8% lead for the Core i5-12400F. Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 1,200, a 34.5% lead for the Core i5-12400F that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 5,500 (157.3% advantage for the Core i7-6850K). L3 cache: 18 MB (total) on the Core i5-12400F vs 15 MB (total) on the Core i7-6850K.

Feature	Core i5-12400F	Core i7-6850K
Cores / Threads	6 / 12	6 / 12
Boost Clock	4.4 GHz+10%	4 GHz
Base Clock	2.5 GHz	3.6 GHz+44%
L3 Cache	18 MB (total)+20%	15 MB (total)
L2 Cache	1.25 MB (per core)+400%	256 kB (per core)
Process	Intel 7 nm-50%	14 nm
Architecture	Alder Lake-S (2022)	Broadwell-E (2016)
PassMark	19,532+72%	11,376
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700+42%	1,200
Geekbench 6 Multi	657	5,500+737%

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Core i7-6850K uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR4-2400 on the Core i7-6850K — the Core i5-12400F supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Memory channels: 2 (Core i5-12400F) vs 4 (Core i7-6850K). PCIe lanes: 20 (Core i5-12400F) vs 40 (Core i7-6850K) — the Core i7-6850K offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and X99 (Core i7-6850K).

Feature	Core i5-12400F	Core i7-6850K
Socket	LGA1700	LGA2011
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR5-4800, DDR4-3200+25%	DDR4-2400
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	4+100%
ECC Support	No	No
PCIe Lanes	20	40+100%

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs VT-x, VT-d (Core i7-6850K). Primary use case: Core i5-12400F targets Gaming Performance/Value, Core i7-6850K targets HEDT. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Core i7-6850K
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	VT-x, VT-d
Target Use	Gaming Performance/Value	HEDT

💰

Value Analysis

The Core i5-12400F launched at $174 MSRP, while the Core i7-6850K debuted at $617. On MSRP ($174 vs $617), the Core i5-12400F is $443 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 18.4 pts/$ for the Core i7-6850K — making the Core i5-12400F the 143.6% better value option.