Intel Core i5-6600K vs Intel Core i9-8950HK

Compare Intel 6th Generation Core i5 4 core CPU vs Intel 8th Generation Core i9 6 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Benchmark Score

Overall Score

A combined score of all workloads

2754 points
11% slightly better overall score
2473 points

Gaming Score

The raw gaming performance with a fast GPU

5105 points
38% slightly better gaming score
3684 points

Multitasking Score

Performance in workloads using up to 8 cores

2098 points
2115 points
0.81% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

2013 points
2044 points
1% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i5-6600K and the Core i9-8950HK? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

55.62 points
85.61 points
53% significantly higher Blender score
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

3989 points
4580 points
14% slightly higher Geekbench 5 (multi) score
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1400 points
10% slightly higher Geekbench 5 (single) score
1270 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

4043 points
5219 points
29% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1429 points
0.49% slightly higher Geekbench 6 (single) score
1422 points

Specifications

Cores

Number of physical processing units

4
6
49% significantly more cores

Threads

Number of logical processing units

4
12
200% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.5 GHz
20% slightly higher clock speed
2.9 GHz

Turbo Speed

Higher frequency used for heavy workloads

3.9 GHz
4.8 GHz
23% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

91 W
45 W
102% significantly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots

16
Identical
16

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
Identical
64 GiB

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
1.5 MiB
49% significantly more L2 cache

L3 Cache

General memory pool for all cores

6 MiB
12 MiB
100% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

578th of 1,089
634th of 1,089

Family

The product line

6th Generation Core i5
8th Generation Core i9

Release date

The official date of release of this chip

2015 August
2018 May

Memory Type

The type of memory used by this chip

DDR4-1866
DDR4-2666

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i5-6600K vs Core i9-8950HK benchmarks

In our benchmarks, the Core i9-8950HK beats the Core i5-6600K in overall performance. Despite this, the Core i5-6600K has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Core i9-8950HK has significantly more cores with 6 cores compared to the Core i5-6600K that has 4 cores. It also has more threads than the Core i5-6600K. These CPUs have different clock speeds. Indeed, the Core i5-6600K has a slightly higher clock speed compared to the Core i9-8950HK. Despite this, the Core i9-8950HK has a slightly higher turbo speed. The Core i9-8950HK outputs less heat than Core i5-6600K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Core i9-8950HK has significantly more L2 cache when compared to the Core i5-6600K. The Core i9-8950HK also has significantly more L3 cache.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. For instance, the Core i5-6600K has the same number of threads as cores. This means the the CPU does not support hyperthreading.

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