Intel Core i5-9600K vs Intel Core i5-8600K

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CPU comparison with benchmarks


Intel Core i5-9600K CPU1 vs CPU2 Intel Core i5-8600K
Intel Core i5-9600K Intel Core i5-8600K

CPU comparison

Intel Core i5-9600K or Intel Core i5-8600K - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i5-9600K has 6 cores with 6 threads and clocks with a maximum frequency of 4.60 GHz. Up to 128 GB of memory is supported in 2 memory channels. The Intel Core i5-9600K was released in Q4/2018.

The Intel Core i5-8600K has 6 cores with 6 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i5-8600K was released in Q4/2017.
Intel Core i5 (336) Family Intel Core i5 (336)
Intel Core i 9000 (34) CPU group Intel Core i 8000 (20)
9 Generation 8
Coffee Lake S Refresh Architecture Coffee Lake S
Desktop Segment Desktop
Intel Core i5-8600K Predecessor Intel Core i5-7600K
Intel Core i5-10600K Successor Intel Core i5-9600K

CPU Cores and Base Frequency

The Intel Core i5-9600K has 6 CPU cores and can calculate 6 threads in parallel. The clock frequency of the Intel Core i5-9600K is 3.70 GHz (4.60 GHz) while the Intel Core i5-8600K has 6 CPU cores and 6 threads can calculate simultaneously. The clock frequency of the Intel Core i5-8600K is at 3.60 GHz (4.30 GHz).

Intel Core i5-9600K Characteristic Intel Core i5-8600K
6 Cores 6
6 Threads 6
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? Yes
3.70 GHz Frequency 3.60 GHz
4.60 GHz Turbo Frequency (1 Core) 4.30 GHz
4.30 GHz Turbo Frequency (All Cores) 4.10 GHz

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Core i5-9600K Characteristic Intel Core i5-8600K
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The Intel Core i5-9600K or Intel Core i5-8600K has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Intel UHD Graphics 630 GPU Intel UHD Graphics 630
0.35 GHz GPU frequency 0.35 GHz
1.15 GHz GPU (Turbo) 1.15 GHz
9.5 GPU Generation 9.5
14 nm Technology 14 nm
3 Max. displays 3
24 Compute units 24
192 Shader 192
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 64 GB
12 DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 630 GPU Intel UHD Graphics 630
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i5-9600K can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 42.7 GB/s. The Intel Core i5-8600K supports up to 128 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 42.7 GB/s.

Intel Core i5-9600K Characteristic Intel Core i5-8600K
DDR4-2666 Memory DDR4-2666
128 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
42.7 GB/s Max. Bandwidth 42.7 GB/s
No ECC No
-- L2 Cache --
9.00 MB L3 Cache 9.00 MB
3.0 PCIe version 3.0
16 PCIe lanes 16
15.8 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core i5-9600K is 95 W, while the Intel Core i5-8600K has a TDP of 95 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i5-9600K Characteristic Intel Core i5-8600K
95 W TDP (PL1 / PBP) 95 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
100 °C Tjunction max. --

Technical details

The Intel Core i5-9600K is manufactured in 14 nm and has 9.00 MB cache. The Intel Core i5-8600K is manufactured in 14 nm and has a 9.00 MB cache.

Intel Core i5-9600K Characteristic Intel Core i5-8600K
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2
LGA 1151-2 Socket LGA 1151-2
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2018 Release date Q4/2017
260 $ Release price 295 $
show more data show more data


Rate these processors

Here you can rate the Intel Core i5-9600K to help other visitors make their purchasing decisions. The average rating is 4.4 stars (20 ratings). Rate now:
Here you can rate the Intel Core i5-8600K to help other visitors make their purchasing decisions. The average rating is 4.0 stars (4 ratings). Rate now:

Average performance in benchmarks

Single core performance in 7 CPU benchmarks
Intel Core i5-9600K (100%)
Intel Core i5-8600K (95%)
Multi core performance in 9 CPU benchmarks
Intel Core i5-9600K (97%)
Intel Core i5-8600K (94%)

Price-performance ratio

Geekbench 6 multi-core score divided by the processor's release price. Higher is better.
Intel Core i5-9600K Intel Core i5-9600K
Geekbench 6 MT: 6,244 / 260 $
24.02
Intel Core i5-8600K Intel Core i5-8600K
Geekbench 6 MT: 5,831 / 295 $
19.77

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
73 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
69 (95%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
355 (91%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
391 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
1276 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
1261 (99%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
7301 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
6832 (94%)

Geekbench 6 (Single-Core)

Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
1561 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
1532 (98%)

Geekbench 6 (Multi-Core)

The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
6244 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
5831 (93%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
1244 (99%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
1251 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
5643 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
5631 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
481 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
406 (84%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
2624 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
2181 (83%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i5-9600K Intel Core i5-9600K
Intel UHD Graphics 630 @ 1.15 GHz
442 (100%)
Intel Core i5-8600K Intel Core i5-8600K
Intel UHD Graphics 630 @ 1.15 GHz
442 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
10791 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
10255 (95%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
318.4 (85%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
374.8 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
522 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
506 (97%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 3.70 GHz
2882 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 3.60 GHz
2731 (95%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.60 GHz
204 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.30 GHz
183 (90%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-9600K Intel Core i5-9600K
6C 6T @ 4.30 GHz
1165 (100%)
Intel Core i5-8600K Intel Core i5-8600K
6C 6T @ 4.10 GHz
1040 (89%)

Devices using this processor

Intel Core i5-9600K Intel Core i5-8600K
Multimedia Office PC Intel Core i5 9600K
Memory PC Intel PC Core i5-9600K
NEXOC Gaming Notebook Laptop 15.6 Zoll mit i5-9600K
Unknown

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