Core i5-8600K

Details and Benchmarks for Intel Core i5-8600K

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i5-8600K based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

5,754 Rank: 339
Rank Name Score Visual
335 AMD Ryzen 5 1600 5,763
+0.2%
336 Xeon E-2174G 5,762
+0.1%
337 EPYC 7272 5,761
+0.1%
338 Xeon W-2155 5,757
+0.1%
339 Core i5-8600K 5,754
340 EPYC 7302P 5,751
-0.1%
341 Xeon Gold 6248 5,745
-0.2%
342 Xeon Gold 6334 5,742
-0.2%
343 Xeon Platinum 8160 5,741
-0.2%
344 Xeon Gold 6142 5,741
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i5-8600K based on multi-threaded benchmark results.

5,252 Rank: 489
Rank Name Score Visual
485 Xeon E5-2630L v4 5,263
+0.2%
486 Ryzen 7 4800U 5,262
+0.2%
487 Xeon D-1559 5,260
+0.2%
488 Xeon D-1567 5,256
+0.1%
489 Core i5-8600K 5,252
490 Xeon E-2224G 5,248
-0.1%
491 Xeon E5-2608L v4 5,247
-0.1%
492 Ryzen 5 PRO 3400GE 5,246
-0.1%
493 EPYC 7251 5,246
-0.1%
494 Core i5-9600KF 5,245
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Core i5-8600K based on single-threaded benchmark results.

6,088 Rank: 238
Rank Name Score Visual
234 Ryzen 7 6800H 6,105
+0.3%
235 Ryzen Threadripper 3970X 6,102
+0.2%
236 AMD Ryzen 3 1200 6,093
+0.1%
237 Core i9-7940X 6,089
+0%
238 Core i5-8600K 6,088
239 Ryzen 5 5600G 6,087
+-0%
240 Ryzen 9 5900HX 6,087
+-0%
241 Ryzen 9 3900 6,087
+-0%
242 Ryzen 5 3600XT 6,080
-0.1%
243 Xeon W-1290 6,078
-0.2%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i5-8600K based on integer math, floating point math, and prime number computation benchmarks.

4,790 Rank: 545
Rank Name Score Visual
541 Core i7-1165G7 4,796
+0.1%
542 Core i5-9600 4,794
+0.1%
543 Ryzen 3 3100 4,793
+0.1%
544 Core i7-9750HF 4,793
+0.1%
545 Core i5-8600K 4,790
546 Ryzen 3 5400U 4,790
+0%
547 Core i7-8850H 4,787
-0.1%
548 Core i5-10500T 4,783
-0.1%
549 Ryzen 3 PRO 5450U 4,782
-0.2%
550 Core i5-8600 4,781
-0.2%

View full ranking →

Data Processing

Aggregated score for Core i5-8600K based on data encryption, data compression, and string sorting benchmarks.

4,780 Rank: 572
Rank Name Score Visual
568 Core i3-10320 4,790
+0.2%
569 Core i5-9600 4,789
+0.2%
570 Ryzen 7 3750H 4,781
+0%
571 Ryzen 3 7320U 4,781
+0%
572 Core i5-8600K 4,780
573 Core i7-7740X 4,779
+-0%
574 Core i7-7700K 4,779
+-0%
575 Xeon E-2126G 4,776
-0.1%
576 Core i5-8600 4,776
-0.1%
577 Core i5-9500F 4,775
-0.1%

View full ranking →

Physics & Compute

Aggregated score for Core i5-8600K based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,920 Rank: 451
Rank Name Score Visual
447 Core i9-9980HK 4,922
+0%
448 Core i7-8700 4,921
+0%
449 Core i7-6850K 4,921
+0%
450 Xeon E5-2695 v2 4,921
+0%
451 Core i5-8600K 4,920
452 Ryzen 5 PRO 4650GE 4,919
+-0%
453 Core i5-10500 4,915
-0.1%
454 Xeon E5-2690 v2 4,914
-0.1%
455 Core i5-10400F 4,912
-0.2%
456 Xeon E5-2687W v2 4,908
-0.2%

View full ranking →

Core i5-8600K Details

As of March 2026, the Intel Core i5-8600K remains a relevant performer in the desktop CPU landscape, particularly for users who prioritize single-threaded performance and overclocking flexibility. Launched in October 2017 as part of Intel's Coffee Lake refresh, this processor is built on a 14 nm process and features a 6-core, 6-thread design with a base clock of 3.6 GHz and a maximum turbo frequency of 4.3 GHz. Despite its age, the i5-8600K continues to deliver strong real-world performance thanks to its unlocked multiplier, which simplifies overclocking and allows users to push the CPU beyond stock speeds with proper cooling and a compatible motherboard.

In terms of raw performance, the Core i5-8600K achieves a Passmark Overall Score of 5754, placing it at #339 out of 2060 processors. Its Singlecore Score of 6088 ranks it #238, indicating exceptional single-threaded performance that still holds up against many modern mid-tier CPUs. The multicore score of 5252, while solid, reflects the limitations of a six-core design in highly parallelized workloads, positioning it at #489 in multicore rankings. This performance gap highlights the processor's strength in applications like gaming, content creation, and productivity tasks that benefit from high clock speeds rather than sheer core count.

The Core i5-8600K integrates Intel’s UHD Graphics 630, a capable onboard GPU with 24 execution units and a base frequency of 350 MHz, capable of boosting up to 1.15 GHz. While not suitable for modern gaming, this integrated graphics solution allows for basic display output and media playback, making it a viable option for budget builds or systems without a discrete GPU. The processor supports dual-channel DDR4-2666 memory, with a maximum capacity of 64 GB, and offers a PCIe 3.0 interface for connecting high-speed storage and expansion cards.

Key features include support for Intel's Advanced Vector Extensions (AVX and AVX2), AES-NI encryption, and hardware virtualization technologies such as Intel VT-x and VT-d, which enhance virtual machine performance and system security. The CPU also includes Intel’s Turbo Boost 2.0 and Speed Shift Technology, enabling dynamic frequency scaling based on workload demands. With a TDP of 95 W and a Socket LGA-1151, the i5-8600K requires adequate cooling, especially when overclocked.

In comparison to modern CPUs, the Core i5-8600K holds its own in single-threaded benchmarks but is outpaced in multicore performance by newer offerings from both Intel and AMD. It competes with processors like the Ryzen 5 5600G and Core i5-10500T, though it outperforms many of them in raw speed and overclocking headroom. While newer architectures offer better efficiency and integrated graphics, the i5-8600K remains a compelling choice for enthusiasts and budget-conscious users seeking a powerful, overclockable CPU for general computing and gaming.
Frequently Compared

AMD Ryzen 3 PRO 2200GE 3 views

AMD Ryzen 9 PRO 3900 2 views

AMD Ryzen 5 PRO 3500U 2 views

Intel Xeon Silver 4116T 2 views

Intel Xeon Silver 4114 2 views

Intel Core i5-8600K

Main Specifications

Designer: Intel
Name: Core i5-8600K
Family: Core
Series: i5-8000
Model Number: i5-8600K
Cores: 6
Threads: 6
Base Frequency: 3600 MHz
Turbo Frequency (1 core): 4300 MHz
Turbo Frequency (2 cores): 4200 MHz
Turbo Frequency (3 cores): 4200 MHz
Turbo Frequency (4 cores): 4200 MHz
Clock Multiplier: 36x (unlocked)
Microarchitecture: Coffee Lake
Core Name: Coffee Lake S
Core Family: 6
Core Model: 158
Socket: LGA-1151
Package: FCLGA-1151
Chipset: 300
Target Segment: Desktop
Max CPUs: 1
TDP: 95 W
Release Price: $257.00

Cache Specifications

L1 Cache: 384 KiB
L1 Instruction Cache: 192.512 KiB (8-way set associative)
L1 Data Cache: 192.512 KiB (8-way set associative)
L2 Cache: 1.5 MiB (4-way set associative)
L3 Cache: 9 MiB (12-way set associative)

Memory Specifications

Supported Memory Type: DDR4-2666
Memory Channels: 2
Maximum Memory: 64 GB
Maximum Bandwidth: 39.74 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8+2x4

Integrated Graphics

GPU: UHD Graphics 630
GPU Designer: Intel
GPU Max Frequency: 1150 MHz
Execution Units: 24

Physical Specifications

Process: 14 nm
Die Area: 149 mm²
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX TBT 2.0 EIST SST TXT vPro VT-x VT-d EPT MPX SGX Secure Key SMEP SIPP IPT TSX Flex Memory MWT ISRT
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