How do the scores compare?

Intel Core i5-10400F scores 32.2/100 overall; Intel Core i7-8700K scores 36.4/100. Intel Core i5-10400F wins 3 individual spec rows, Intel Core i7-8700K wins 6.

What are the main differences between the Intel Core i5-10400F and the Intel Core i7-8700K?

Intel Core i5-10400F advantages: 100% higher Max memory: 128 GB vs 64 GB; 32% lower Base TDP: 65 W vs 95 W; Lower launch price: $173 vs $359. Intel Core i7-8700K advantages: Stronger single-core score: 37 vs 29; 28% higher Base clock: 3.7 GHz vs 2.9 GHz; 15% higher PassMark: 13,900 vs 12,094; 14% higher Cinebench R23 (single): 1,270 vs 1,114; 12% higher Cinebench R23 (multi): 9,200 vs 8,219.

Which is cheaper: Intel Core i5-10400F or Intel Core i7-8700K?

Intel Core i5-10400F launched cheaper at $173, versus $359 for the Intel Core i7-8700K.

Intel Core i5-10400F vs Intel Core i7-8700K

Intel

Intel Core i5-10400F

$173

WINNER

Intel

Intel Core i7-8700K

$359

28.6Single-core37.3

32.5Multi-core34.7

36Gamingspec-based38.5

3 spec wins — Intel Core i5-10400F6 spec wins — Intel Core i7-8700K

InnoReviews verdict

Intel Core i7-8700K wins this desktop processor face-off, 36.4 to 32.2, pulling ahead mainly in single-core (+9) and multi-core (+2). Intel Core i5-10400F still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the Intel Core i5-10400F

100% higher Max memory: 128 GB vs 64 GB
32% lower Base TDP: 65 W vs 95 W
Lower launch price: $173 vs $359

Reasons to pick the Intel Core i7-8700K

Stronger single-core score: 37 vs 29
28% higher Base clock: 3.7 GHz vs 2.9 GHz
15% higher PassMark: 13,900 vs 12,094
14% higher Cinebench R23 (single): 1,270 vs 1,114
12% higher Cinebench R23 (multi): 9,200 vs 8,219

General

General comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
Announced	2020	2017
Socket	LGA1200	LGA1151-v2
Process	14 nm	14 nm
Base TDP	65 W+32%	95 W
Unlocked multiplier	No	Yes
Cooler included	—	No

Cores & Clocks

Cores & Clocks comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
Cores	6	6
Performance cores	—	6
Efficiency cores	—	0
Threads	12	12
Base clock	2.9 GHz	3.7 GHz+28%
Boost clock	4.3 GHz	4.7 GHz+9%
L2 cache	2 MB	2 MB
L3 cache	12 MB	12 MB

Integrated GPU

Integrated GPU comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
iGPU	—	Intel UHD Graphics 630
iGPU clock	—	1,200 MHz

Memory

Memory comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
Memory support	DDR4-2666	DDR4-2666
Max memory	128 GB+100%	64 GB
Memory channels	2	2

Platform

Platform comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
PCIe version	3	3
CPU PCIe lanes	16	16

Benchmarks

Benchmarks comparison: Intel Core i5-10400F versus Intel Core i7-8700K
Spec	Intel Core i5-10400F	Intel Core i7-8700K
Geekbench 6 (single)	—	1,560Bottom 34%
Geekbench 6 (multi)	—	6,800Bottom 36%
Cinebench R23 (single)	1,114Bottom 19%	1,270+14%Bottom 30%
Cinebench R23 (multi)	8,219Bottom 27%	9,200+12%Bottom 32%
PassMark	12,094Bottom 19%	13,900+15%Bottom 23%

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