Intel Core i9-11900K vs Intel Core i9-12900K

Compare Intel 11th Generation Core i9 8 core CPU vs Intel 12th Generation Core i9 16 core processor, specs and benchmark score. Which is the better CPU for gaming?

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The cheapest price from our partner retailers

$ 559.99
$ 22.99 slightly less expensive
$ 582.98

Benchmark Score

Overall Score

A combined score of all workloads

86 %
134 %
55% significantly better overall score

Gaming Score

The raw gaming performance with a fast GPU

111 %
144 %
29% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

78 %
131 %
67% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

76 %
131 %
72% significantly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i9-11900K and the Core i9-12900K? Download our free and quick PC Performance Test.

Other Benchmarks

Geekbench (multi) score

Geekbench (multi) score

Multi threaded benchmark

61% significantly higher Geekbench (multi) score
Geekbench (single) score

Geekbench (single) score

Single threaded benchmark

9% slightly higher Geekbench (single) score
Cinebench R23 score

Cinebench R23 score

Multi threaded benchmark

74% significantly higher Cinebench R23 score
3DMark Physics score

3DMark Physics score

Physics simulation benchmark

47% significantly higher 3DMark Physics score



Number of physical processing units

100% significantly more cores


Number of logical processing units

49% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.5 GHz
9% slightly higher clock speed
3.2 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.3 GHz
1% slightly higher turbo speed
5.2 GHz


Thermal Design Power: Measure of heat generated by the CPU

125 W
92% significantly lower TDP
241 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

128 GiB
128 GiB

L1 Cache

Smallest embedded memory, but the fastest

640 KiB
1280 KiB
100% significantly more L1 cache

L3 Cache

General memory pool for all cores

16 MiB
30 MiB
87% significantly more L3 cache

Other details


Ranking in the hardwareDB database

32nd of 1,219
7th of 1,219


The product line

11th Generation Core i9
12th Generation Core i9

Release date

The official date of release of this chip

February 2021
November 2021

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 i9-11900K vs Core i9-12900K specs and performance

In our benchmarks, the Core i9-12900K beats the Core i9-11900K in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-11900K in all gaming tests too.

With info from our database, we find that the Core i9-12900K has significantly more cores with 16 cores whereas the Core i9-11900K has 8 cores. It also has more threads than the Core i9-11900K. Our comparison shows that the Core i9-11900K has a slightly higher clock speed compared to the Core i9-12900K. Also, the Core i9-11900K has a slightly higher turbo speed. A Core i9-11900K CPU outputs less heat than a Core i9-12900K CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

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 i9-11900K has more threads than cores. Each physical core is split into multiple threads.


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