Intel Core i3-9100 vs Intel Core i5-8600K

Compare Intel 9th Generation Core i3 4 core CPU vs Intel 8th Generation Core i5 6 core processor, specs and benchmark score. Which is the better CPU for gaming?

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The cheapest price from our partner retailers

$ 142
$ 132.61 significantly less expensive
$ 275

Benchmark Score

Overall Score

A combined score of all workloads

35 %
50 %
42% much better overall score

Gaming Score

The raw gaming performance with a fast GPU

63 %
79 %
25% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

27 %
41 %
51% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

26 %
40 %
53% significantly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i3-9100 and the Core i5-8600K? Download our free and quick PC Performance Test.

Other Benchmarks

Geekbench (multi) score

Multi threaded benchmark

65% significantly higher Geekbench (multi) score

Geekbench (single) score

Single threaded benchmark

13% slightly higher Geekbench (single) score



Number of physical processing units

49% significantly more cores


Number of logical processing units

49% significantly more threads

Clock Speed

Base frequency at which the chip operates

4 GHz
4 GHz

Turbo Speed

Higher frequency used for heavy workloads

4 GHz
4 GHz
2% slightly higher turbo speed


Thermal Design Power: Measure of heat generated by the CPU

65 W
46% significantly lower TDP
95 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots


Memory Channels

Lanes for simultaneous memory access


Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
128 GiB
100% significantly more supported memory

L1 Cache

Smallest embedded memory, but the fastest

256 KiB
384 KiB
49% significantly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

1 MiB
2 MiB
49% significantly more L2 cache

L3 Cache

General memory pool for all cores

6 MiB
9 MiB
49% significantly more L3 cache

Other details


Ranking in the hardwareDB database

510th of 1,335
330th of 1,335


The product line

9th Generation Core i3
8th Generation Core i5

Release date

The official date of release of this chip

May 2019
November 2017

Memory Type

The type of memory used by this chip


Is Unlocked

Can this CPU can be overclocked


Supports ECC memory

Does this CPU support error correcting memory


Core i3-9100 vs Core i5-8600K benchmarks

Our benchmark analysis concludes that the Core i5-8600K performs better than the Core i3-9100. Furthermore, our gaming benchmark shows that it also outperforms the Core i3-9100 in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i5-8600K has significantly more cores with 6 cores compared to the Core i3-9100 that has 4 cores. It also has more threads than the Core i3-9100. In terms of clock speed, the Core i3-9100 and Core i5-8600K are identical in this regard. Despite this, the Core i5-8600K has a slightly higher turbo speed. A Core i3-9100 CPU outputs less heat than a Core i5-8600K CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Core i5-8600K has significantly more L2 cache than the Core i3-9100. The Core i5-8600K also has significantly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. For instance, the Core i3-9100 has the same number of threads as cores. This means the the CPU does not support hyperthreading.


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