Intel Core i9-9900K vs Intel Core i5-12400F

Compare Intel 9th Generation Core i9 8 core CPU vs Intel 12th Generation Core i5 6 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Price

The cheapest price from our partner retailers

$ 567.86
$ 160.88
$ 406.98 significantly less expensive

Benchmark Score

Overall Score

A combined score of all workloads

70 %
Identical
70 %

Gaming Score

The raw gaming performance with a fast GPU

86 %
95 %
10% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

65 %
4% slightly better multitasking score
62 %

Heavy Workload Score

Performance in workloads using up to 16 cores

64 %
6% slightly better heavy workload score
60 %

Free CPU Benchmark

Want to compare your processor against the Core i9-9900K and the Core i5-12400F? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

10700
14% slightly higher 3DMark Physics score
9328
Blender score

Blender score

Cycles Render (Samples per minute)

188.05
7% slightly higher Blender score
174.24
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

7957
8804
10% slightly higher Geekbench 5 (multi) score
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1634
2154
31% slightly higher Geekbench 5 (single) score
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

7957
8804
10% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1634
2154
31% slightly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

8
33% slightly more cores
6

Threads

Number of logical processing units

16
33% slightly more threads
12

Clock Speed

Base frequency at which the chip operates

3.6 GHz
44% significantly higher clock speed
2.5 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
13% slightly higher turbo speed
4.4 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

95 W
65 W
46% significantly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots

16
20
25% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

128 GiB
Identical
128 GiB

L1 Cache

Smallest embedded memory, but the fastest

512 KiB
6% slightly more L1 cache
480 KiB

L3 Cache

General memory pool for all cores

16 MiB
18 MiB
12% slightly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

79th of 1,240
82nd of 1,240

Family

The product line

9th Generation Core i9
12th Generation Core i5

Release date

The official date of release of this chip

November 2018
February 2022

Memory Type

The type of memory used by this chip

DDR4-2666
DDR5-4800

Is Unlocked

Can this CPU can be overclocked

Yes
No

Supports ECC memory

Does this CPU support error correcting memory

No
-

Core i9-9900K vs Core i5-12400F comparison

Our benchmark analysis concludes that the Core i5-12400F performs better than the Core i9-9900K. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-9900K in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i9-9900K has slightly more cores than the Core i5-12400F. Indeed, the Core i9-9900K has 8 cores compared to 6 cores found in the Core i5-12400F. It also has more threads than the Core i5-12400F. These CPUs have different clock speeds. Indeed, the Core i9-9900K has a significantly higher clock speed compared to the Core i5-12400F. Also, the Core i9-9900K has a slightly higher turbo speed. The Core i5-12400F outputs less heat than Core i9-9900K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

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. Indeed, the Core i9-9900K has more threads than cores. Each physical core is split into multiple threads.

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