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Intel Core i7-8700 vs Intel Core i7-5820K

Last updated: 2026-07-03

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 1 - 100 %

Intel Core i7-8700

Rank 2 - 74 %

Intel Core i7-5820K

Multi-core performance

Rank 1 - 100 %

Intel Core i7-8700

Rank 2 - 83 %

Intel Core i7-5820K

Cinebench R23 Single-Core
Single-core performance

6C / 12T · 4.60 GHz

1,146 pts

6C / 12T · 3.60 GHz

795 pts

Cinebench R23 Multi-Core
Multi-core performance

6C / 12T · 4.30 GHz

7,969 pts

6C / 12T · 3.40 GHz

5,700 pts

Geekbench 6 Single-Core
Single-core performance

6C / 12T · 4.60 GHz

1,459

6C / 12T · 3.60 GHz

1,086

Geekbench 6 Multi-Core
Multi-core performance

6C / 12T · 4.30 GHz

6,027

6C / 12T · 3.40 GHz

5,763

Cinebench R20 Single-Core
Single-core performance

6C / 12T · 4.60 GHz

481 cb

6C / 12T · 3.60 GHz

329 cb

Geekbench 5, 64bit Single-Core
Single-core performance

6C / 12T · 4.60 GHz

1,172

6C / 12T · 3.60 GHz

923

Cinebench R20 Multi-Core
Multi-core performance

6C / 12T · 4.30 GHz

3,547 cb

6C / 12T · 3.40 GHz

2,301 cb

Geekbench 5, 64bit Multi-Core
Multi-core performance

6C / 12T · 4.30 GHz

5,891

6C / 12T · 3.40 GHz

5,537

Blender 3.1 Benchmark
Multi-core performance

6C / 12T · 4.30 GHz

118

6C / 12T · 3.40 GHz

Blender 2.81 (bmw27)
Multi-core performance

6C / 12T · 4.30 GHz

231.5 s

6C / 12T · 3.40 GHz

331.7 s

CPU-Z Benchmark 17 Multi-Core
Multi-core performance

6C / 12T · 3.20 GHz

3,674

6C / 12T · 3.30 GHz

2,849

Cinebench R15 (Single-Core)
Single-core performance

6C / 12T · 4.60 GHz

203 cb

6C / 12T · 3.60 GHz

139 cb

Cinebench R15 (Multi-Core)
Multi-core performance

6C / 12T · 4.30 GHz

1,434 cb

6C / 12T · 3.40 GHz

1,085 cb

More benchmarks

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Cinebench R20 (SC)
666 entries

Geekbench 5 (SC)
2,512 entries

Cinebench R20 (MC)
615 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

3DMark Timespy (iGPU)
534 entries

Blender 3.1 Benchmark
213 entries

PassMark CPU-Mark
2,504 entries

Blender 2.81 (bmw27)
190 entries

CPU-Z Benchmark 17 (SC)
250 entries

CPU-Z Benchmark 17 (MC)
751 entries

V-Ray CPU-Render
251 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Geekbench 3 (SC)
945 entries

Geekbench 3 (MC)
941 entries

Cinebench R11.5 (SC)
826 entries

Cinebench R11.5 (MC)
837 entries

Cinebench R11.5 iGPU
383 entries

Specifications

At a glance

Wischen	Intel Core i7-8700	Intel Core i7-5820K
Family	Intel Core i7 (300)	Intel Core i7 Extreme Edition (24)
CPU group	Intel Core i 8000 (20)	Intel Core i 5000X (3)
Architecture	Coffee Lake S	Haswell E
Technology	14 nm	22 nm
Segment	Desktop	Desktop
Socket	LGA 1151-2	LGA 2011-3
Predecessor	Intel Core i7-7700	Intel Core i7-4820K
Successor	Intel Core i7-9700

CPU Cores and Base Frequency

Wischen	Intel Core i7-8700	Intel Core i7-5820K
CPU Cores / Threads	6 / 12	6 / 12
Hyperthreading / SMT	✓	✓
Core architecture	normal	normal
Cores:	6x	6x
Frequency:	3.20 GHz	3.30 GHz
Turbo (1 Core):	4.60 GHz	3.60 GHz
Turbo (All Cores):	4.30 GHz	3.40 GHz
L2-Cache
L3-Cache	12.00 MB	15.00 MB
Overclocking	✗	✓

Integrated graphics (iGPU)

Wischen	Intel Core i7-8700	Intel Core i7-5820K
GPU name	Intel UHD Graphics 630	no iGPU
GPU frequency	0.35 - 1.15 GHz
CUs / Shader	24 / 192	/
Raytracing	✗	✗
Max. displays	3
Max. GPU Memory	64 GB
Technology	14 nm
Release date	Q4/2017

NPU AI performance

Wischen	Intel Core i7-8700	Intel Core i7-5820K
AI hardware
AI specifications
NPU + CPU + iGPU

Memory & PCIe

Wischen	Intel Core i7-8700	Intel Core i7-5820K
Memory	DDR4-2666 (42.7 GB/s)	DDR4-2133 (68.2 GB/s)
Max. Memory	128 GB	64 GB
Memory channels	2	4
ECC	No	No
PCIe	3.0 x 16	3.0 x 28
PCIe Bandwidth	15.8 GB/s	27.6 GB/s

Thermal Management

Wischen	Intel Core i7-8700	Intel Core i7-5820K
TDP	65 W	140 W
TDP (PL2)
TDP up
TDP down
T. junction max.	100 °C

Technical details

Wischen	Intel Core i7-8700	Intel Core i7-5820K
Chip design	Monolithic	Monolithic
AES-NI	✓	✓
Operating systems	Windows 10, Windows 11, Linux	Windows 10, Linux
Instruction set	x86-64 (64 bit)	x86-64 (64 bit)
ISA extensions	SSE4.1, SSE4.2, AVX2	SSE4.1, SSE4.2, AVX2
Release date	Q4/2017	Q3/2014
Release price	340 $	499 $
Documents	Technical data sheet	Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of Intel Core i7-8700 is 4.1 stars (137 ratings), while Intel Core i7-5820K has received 4.4 stars (16 ratings).

Click on the stars to rate one or both processors.

Intel Core i7-8700
6C / 12T · 3.20 - 4.60 GHz

★★★★★

Intel Core i7-5820K
6C / 12T · 3.30 - 3.60 GHz

★★★★★