Share link|

Submit benchmark

Comparison Search Benchmarks CPUs Leaderboards CPU News & Articles GPU comparison Apple product comparison

Deutsch English Español Français Italiano Japanese

Intel Core i5-8600K vs Intel Core i9-9900

Last updated: 2026-07-04

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 2 - 96 %

Intel Core i5-8600K

Rank 1 - 100 %

Intel Core i9-9900

Multi-core performance

Rank 2 - 64 %

Intel Core i5-8600K

Rank 1 - 100 %

Intel Core i9-9900

Cinebench R23 Single-Core
Single-core performance

6C / 6T · 4.30 GHz

1,261 pts

8C / 16T · 5.00 GHz

1,284 pts

Cinebench R23 Multi-Core
Multi-core performance

6C / 6T · 4.10 GHz

6,832 pts

8C / 16T · 4.00 GHz

12,205 pts

Geekbench 6 Single-Core
Single-core performance

6C / 6T · 4.30 GHz

1,532

8C / 16T · 5.00 GHz

1,637

Geekbench 6 Multi-Core
Multi-core performance

6C / 6T · 4.10 GHz

5,831

8C / 16T · 4.00 GHz

7,619

Cinebench R20 Single-Core
Single-core performance

6C / 6T · 4.30 GHz

406 cb

8C / 16T · 5.00 GHz

518 cb

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

6C / 6T · 4.30 GHz

1,251

8C / 16T · 5.00 GHz

1,292

Cinebench R20 Multi-Core
Multi-core performance

6C / 6T · 4.10 GHz

2,181 cb

8C / 16T · 4.00 GHz

4,346 cb

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

6C / 6T · 4.10 GHz

5,631

8C / 16T · 4.00 GHz

8,047

iGPU - FP32 Performance (Single-precision GFLOPS)

Intel UHD Graphics 630

442

Intel UHD Graphics 630

461

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

6C / 6T · 3.60 GHz

2,731

8C / 16T · 3.10 GHz

5,010

Cinebench R15 (Single-Core)
Single-core performance

6C / 6T · 4.30 GHz

183 cb

8C / 16T · 5.00 GHz

219 cb

Cinebench R15 (Multi-Core)
Multi-core performance

6C / 6T · 4.10 GHz

1,040 cb

8C / 16T · 4.00 GHz

1,931 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

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

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 i5-8600K	Intel Core i9-9900
Family	Intel Core i5 (336)	Intel Core i9 (81)
CPU group	Intel Core i 8000 (20)	Intel Core i 9000 (34)
Architecture	Coffee Lake S	Coffee Lake S Refresh
Technology	14 nm	14 nm
Segment	Desktop	Desktop
Socket	LGA 1151-2	LGA 1151-2
Predecessor	Intel Core i5-7600K
Successor	Intel Core i5-9600K	Intel Core i9-10900

CPU Cores and Base Frequency

Wischen	Intel Core i5-8600K	Intel Core i9-9900
CPU Cores / Threads	6 / 6	8 / 16
Hyperthreading / SMT	✗	✓
Core architecture	normal	normal
Cores:	6x	8x
Frequency:	3.60 GHz	3.10 GHz
Turbo (1 Core):	4.30 GHz	5.00 GHz
Turbo (All Cores):	4.10 GHz	4.00 GHz
L2-Cache
L3-Cache	9.00 MB	16.00 MB
Overclocking	✓	✗

Integrated graphics (iGPU)

Wischen	Intel Core i5-8600K	Intel Core i9-9900
GPU name	Intel UHD Graphics 630	Intel UHD Graphics 630
GPU frequency	0.35 - 1.15 GHz	0.35 - 1.20 GHz
CUs / Shader	24 / 192	24 / 192
Raytracing	✗	✗
Max. displays	3	3
Max. GPU Memory	64 GB	64 GB
Technology	14 nm	14 nm
Release date	Q4/2017	Q4/2017

NPU AI performance

Wischen	Intel Core i5-8600K	Intel Core i9-9900
AI hardware
AI specifications
NPU + CPU + iGPU

Memory & PCIe

Wischen	Intel Core i5-8600K	Intel Core i9-9900
Memory	DDR4-2666 (42.7 GB/s)	DDR4-2666 (42.7 GB/s)
Max. Memory	128 GB	128 GB
Memory channels	2	2
ECC	No	No
PCIe	3.0 x 16	3.0 x 16
PCIe Bandwidth	15.8 GB/s	15.8 GB/s

Thermal Management

Wischen	Intel Core i5-8600K	Intel Core i9-9900
TDP	95 W	65 W
TDP (PL2)
TDP up
TDP down
T. junction max.		100 °C

Technical details

Wischen	Intel Core i5-8600K	Intel Core i9-9900
Chip design	Monolithic	Monolithic
AES-NI	✓	✓
Operating systems	Windows 10, Windows 11, Linux	Windows 10, Windows 11, 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	Q2/2019
Release price	295 $	550 $
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 i5-8600K is 4.2 stars (15 ratings), while Intel Core i9-9900 has received 4.5 stars (20 ratings).

Click on the stars to rate one or both processors.

Intel Core i5-8600K
6C / 6T · 3.60 - 4.30 GHz

★★★★★

Intel Core i9-9900
8C / 16T · 3.10 - 5.00 GHz

★★★★★