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

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

Quickly search and compare processors

Price

The cheapest price from our partner retailers

$ 391
$ 192
$ 198.64 significantly less expensive

Benchmark Score

Overall Score

A combined score of all workloads

84 %
87 %
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

100 %
116 %
16% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

79 %
2% slightly better multitasking score
77 %

Heavy Workload Score

Performance in workloads using up to 16 cores

77 %
2% slightly better heavy workload score
75 %

Free CPU Benchmark

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

Other Benchmarks

Geekbench (multi) score

Multi threaded benchmark

8,488
7% slightly higher Geekbench (multi) score
7,930

Geekbench (single) score

Single threaded benchmark

1,305
1,626
24% slightly higher Geekbench (single) score

3DMark Physics score

Physics simulation benchmark

10,793
15% slightly higher 3DMark Physics score
9,351

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

4 GHz
44% significantly higher clock speed
3 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
13% slightly higher turbo speed
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

101st of 1,327
90th of 1,327

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 i5-12400 specs and performance

According to the hardwareDB Benchmark tool, the Core i5-12400 is faster than the Core i9-9900K. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-9900K in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i9-9900K has slightly more cores with 8 cores compared to the Core i5-12400 that has 6 cores. It also has more threads than the Core i5-12400. Our comparison shows that the Core i9-9900K has a significantly higher clock speed compared to the Core i5-12400. Also, the Core i9-9900K has a slightly higher turbo speed. The Core i5-12400 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.

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

Comments

No comments yet! Be the first to leave a comment using the form below.

Keep comments on topic and be polite. Comments are subject to moderation before they are published.

Popular CPU Comparisons