Intel Core i5-11600K vs Intel Core i5-6400

Compare Intel 11th Generation Core i5 6 core CPU vs Intel 6th Generation Core i5 4 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Price

The cheapest price from our partner retailers

$ 199.00
$ 99.99
$ 99.01 significantly less expensive

Benchmark Score

Overall Score

A combined score of all workloads

6621 points
211% significantly better overall score
2127 points

Gaming Score

The raw gaming performance with a fast GPU

9474 points
139% significantly better gaming score
3959 points

Multitasking Score

Performance in workloads using up to 8 cores

5722 points
253% significantly better multitasking score
1617 points

Heavy Workload Score

Performance in workloads using up to 16 cores

5531 points
256% significantly better heavy workload score
1551 points

Free CPU Benchmark

Want to compare your processor against the Core i5-11600K and the Core i5-6400? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

6323 points
112% significantly higher 3DMark Physics score
2971 points
Blender score

Blender score

Cycles Render (Samples per minute)

156.80 points
292% significantly higher Blender score
39.92 points
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

8447 points
186% significantly higher Geekbench 5 (multi) score
2948 points
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

2118 points
96% significantly higher Geekbench 5 (single) score
1079 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

8549 points
180% significantly higher Geekbench 6 (multi) score
3046 points
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

2208 points
97% significantly higher Geekbench 6 (single) score
1116 points

Specifications

Cores

Number of physical processing units

6
49% significantly more cores
4

Threads

Number of logical processing units

12
200% significantly more threads
4

Clock Speed

Base frequency at which the chip operates

3.9 GHz
44% significantly higher clock speed
2.7 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.9 GHz
48% significantly higher turbo speed
3.3 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

125 W
65 W
92% significantly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots

20
25% slightly more pcie lanes
16

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

128 GiB
100% significantly more supported memory
64 GiB

L1 Cache

Smallest embedded memory, but the fastest

480 KiB
87% significantly more L1 cache
256 KiB

L2 Cache

Secondary embedded memory, slower than L1 cache

1.5 MiB
49% significantly more L2 cache
1 MiB

L3 Cache

General memory pool for all cores

12 MiB
100% significantly more L3 cache
6 MiB

Other details

Rank

Ranking in the hardwareDB database

215th of 1,089
699th of 1,089

Family

The product line

11th Generation Core i5
6th Generation Core i5

Release date

The official date of release of this chip

2021 February
2015 August

Memory Type

The type of memory used by this chip

DDR4-3200
DDR4-1866

Is Unlocked

Can this CPU can be overclocked

Yes
No

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i5-11600K vs Core i5-6400 specs and performance

Our benchmark analysis concludes that the Core i5-11600K performs better than the Core i5-6400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-6400 in all gaming tests too.

With info from our database, we find that the Core i5-11600K has significantly more cores with 6 cores whereas the Core i5-6400 has 4 cores. It also has more threads than the Core i5-6400. With our hardware info, we find that the Core i5-11600K has a significantly higher clock speed than the Core i5-6400. Also, the Core i5-11600K has a significantly higher turbo speed. The Core i5-6400 outputs less heat than Core i5-11600K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The info from our database shows that the Core i5-11600K has more L2 cache than the Core i5-6400. The Core i5-11600K also has significantly more L3 cache.

The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. Indeed, the Core i5-11600K has more threads than cores. Each physical core is split into multiple threads.

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