Core i5-11400F vs Core i7-8700K: CPU comparison

Performance score

Core i5-11400F 2021, $157 · 6/12 cores/threads, 65 W

27.82

Core i7-8700K 2017 · 6/12 cores/threads, 95 W

27.21

Core i5-12400F Ryzen 5 7500F Ryzen 7 7800X3D Ryzen 7 9800X3D Core i7-14700K Core Ultra 7 265K Core i9-14900K

Core i5-11400F and Core i7-8700K are almost equally fast (under 3% apart) — choose by price, socket and platform.

Different sockets (LGA1200 and LGA1151) — switching between them needs a different motherboard.

The score is our own estimate from the specs (cores, threads, clocks, architecture generation), not a benchmark run. 100 = the fastest CPU in our database.

Real tests

What the test measures

Blender is a popular free 3D graphics program. The test makes the device render three ready-made 3D scenes (light, shadows, reflections) and counts how many render passes it finishes per minute. The higher the number, the faster the device handles heavy work: 3D, video editing, photo processing. On a CPU the test loads all cores at once, so it shows the chip's full power; on a graphics card it shows its compute strength.

CPU rendering (Blender)

Core i5-11400F

123

faster than 57% of tested · runs: 24

Core i7-8700K

122

faster than 56% of tested · runs: 42

Median of real test runs on users' computers. It does not show FPS in games. Data updated: 31.10.2026.

Overview

	Core i5-11400F	Core i7-8700K
Score (0–100)	27.82	27.21
Ranking position	341	348
Price/performance (0–100)	63.59	no data
Power efficiency (0–100)	22.37	14.97
Type	Desktop	Desktop
Manufacturer	Intel	Intel
Architecture	Rocket Lake	Coffee Lake
Release date	2021-03-16	Q4 2017
Launch price	$157	no data

Specifications

	Core i5-11400F	Core i7-8700K
Cores	6	6
Threads	12	12
Base clock	2.6 GHz	3.7 GHz
Boost clock	4.4 GHz	4.7 GHz
L2 cache	3 MB	no data
L3 cache	12 MB	12 MB
Process node	14 nm	14 nm
Unlocked multiplier	no	yes
Integrated graphics	no	Intel UHD Graphics 630
NPU (AI accelerator)	no	no

Compatibility

	Core i5-11400F	Core i7-8700K
Socket	LGA1200	LGA1151
TDP	65 W	95 W

Memory and PCI Express

	Core i5-11400F	Core i7-8700K
Memory type	DDR4-3200	DDR4-2666
Memory channels	2	2
Max memory	128 GB	128 GB
PCI Express version	4.0	3.0
PCIe lanes	20	16

Pros and cons

Core i5-11400F

9% faster single core
lower TDP: 65 W vs 95 W
newer: released in 2021

Core i7-8700K

has integrated graphics (Intel UHD Graphics 630)
unlocked multiplier (can be overclocked)

Other comparisons

Visitor rating

Questions and comments

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