Intel Core i9-12900K vs Intel Core i9-9900K

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CPU comparison with benchmarks


Intel Core i9-12900K CPU1 vs CPU2 Intel Core i9-9900K
Intel Core i9-12900K Intel Core i9-9900K

CPU comparison

Intel Core i9-12900K or Intel Core i9-9900K - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i9-12900K has 16 cores with 24 threads and clocks with a maximum frequency of 5.20 GHz. Up to 128 GB of memory is supported in 2 memory channels. The Intel Core i9-12900K was released in Q4/2021.

The Intel Core i9-9900K has 8 cores with 16 threads and clocks with a maximum frequency of 5.00 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i9-9900K was released in Q4/2018.
Intel Core i9 (78) Family Intel Core i9 (78)
Intel Core i 12000 (34) CPU group Intel Core i 9000 (34)
12 Generation 9
Alder Lake S Architecture Coffee Lake S Refresh
Desktop / Server Segment Desktop / Server
Intel Core i9-11900K Predecessor --
Intel Core i9-13900K Successor Intel Core i9-10900K

CPU Cores and Base Frequency

The Intel Core i9-12900K has 16 CPU cores and can calculate 24 threads in parallel. The clock frequency of the Intel Core i9-12900K is 3.20 GHz (5.20 GHz) while the Intel Core i9-9900K has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the Intel Core i9-9900K is at 3.60 GHz (5.00 GHz).

Intel Core i9-12900K Characteristic Intel Core i9-9900K
16 Cores 8
24 Threads 16
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.20 GHz (5.20 GHz)
8x Golden Cove
A-Core 3.60 GHz (5.00 GHz)
2.40 GHz (3.90 GHz)
8x Gracemont
B-Core --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i9-12900K Characteristic Intel Core i9-9900K
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i9-12900K or Intel Core i9-9900K has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Intel UHD Graphics 770 GPU Intel UHD Graphics 630
0.30 GHz GPU frequency 0.35 GHz
1.55 GHz GPU (Turbo) 1.20 GHz
11 GPU Generation 9.5
10 nm Technology 14 nm
3 Max. displays 3
32 Compute units 24
256 Shader 192
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 64 GB
12 DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 770 GPU Intel UHD Graphics 630
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode / Encode
Decode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The Intel Core i9-12900K can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 76.8 GB/s. The Intel Core i9-9900K supports up to 128 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 42.7 GB/s.

Intel Core i9-12900K Characteristic Intel Core i9-9900K
DDR5-4800, DDR4-3200 Memory DDR4-2666
128 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
76.8 GB/s Max. Bandwidth 42.7 GB/s
Yes ECC No
14.00 MB L2 Cache --
30.00 MB L3 Cache 16.00 MB
5.0 PCIe version 3.0
20 PCIe lanes 16
78.8 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core i9-12900K is 125 W, while the Intel Core i9-9900K has a TDP of 95 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i9-12900K Characteristic Intel Core i9-9900K
125 W TDP (PL1 / PBP) 95 W
241 W TDP (PL2) 119 W @ 28 s
-- TDP up --
-- TDP down --
100 °C Tjunction max. 100 °C

Technical details

The Intel Core i9-12900K is manufactured in 10 nm and has 44.00 MB cache. The Intel Core i9-9900K is manufactured in 14 nm and has a 16.00 MB cache.

Intel Core i9-12900K Characteristic Intel Core i9-9900K
10 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX2+ ISA extensions SSE4.1, SSE4.2, AVX2
LGA 1700 Socket LGA 1151-2
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2021 Release date Q4/2018
589 $ Release price 650 $
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-12900K to help other visitors make their purchasing decisions. The average rating is 4.3 stars (25 ratings). Rate now:
Here you can rate the Intel Core i9-9900K to help other visitors make their purchasing decisions. The average rating is 3.9 stars (14 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 7 CPU benchmarks
Intel Core i9-12900K (100%)
Intel Core i9-9900K (66%)
⌀ Multi core performance in 9 CPU benchmarks
Intel Core i9-12900K (100%)
Intel Core i9-9900K (48%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
126 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
77 (61%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
1582 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
640 (40%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
1997 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
1294 (65%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
27472 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
12812 (47%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
1990 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
1342 (67%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
17595 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
8779 (50%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
2560 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
1650 (64%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
16244 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
8182 (50%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
779 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
518 (66%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
10511 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
4995 (48%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i9-12900K Intel Core i9-12900K
Intel UHD Graphics 770 @ 1.55 GHz
794 (100%)
Intel Core i9-9900K Intel Core i9-9900K
Intel UHD Graphics 630 @ 1.20 GHz
461 (58%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
364 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
171 (47%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
40902 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
18702 (46%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
817 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
545 (67%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 3.20 GHz
11365 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 3.60 GHz
5502 (48%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.20 GHz
294 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 5.00 GHz
219 (74%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
4111 (100%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
2245 (55%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core i9-12900K Intel Core i9-12900K
16C 24T @ 5.00 GHz
0 (0%)
Intel Core i9-9900K Intel Core i9-9900K
8C 16T @ 4.70 GHz
163.8 (100%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
Intel Core i9-12900K Intel Core i9-12900K
27,472 CB R23 MC @ 240 W
114 (100%)
Intel Core i9-9900K Intel Core i9-9900K
3.60 GHz
0 (0%)

Devices using this processor

Intel Core i9-12900K Intel Core i9-9900K
Unknown Memory PC Intel i9-9900K
Multimedia Office PC Intel Core i9 9900K
Corsair ONE i160 Kompakter Gaming-PC Intel Core i9-9900K

News and articles for the Intel Core i9-12900K and the Intel Core i9-9900K


Comparison of the two processors

There are 3 years and also 3 generations between the release of the Intel Core i9-9900K and the Intel Core i9-12900K. The Intel Core i9-9900K was released by Intel in the fourth quarter of 2018, and the Intel Core i9-12900K in the fourth quarter of 2021.

A lot has happened during this time, because the Intel processor from 2018 was still manufactured using the 14-nanometer process, while the processor released in 2021 is manufactured using the smaller 10-nanometer process. In addition, there has also been a significant change in the structure of the processors. While the Intel Core i9-9900K has 8 physical cores and has 16 threads thanks to Hyperthreading, the Intel Core i9-12900K has 16 physical cores available, which is a big LITTLE structure, which means 8 of the 16 cores so-called performance cores and the other 8 so-called efficiency cores. With this processor, only the performance cores support hyperthreading technology, which means that the processor has a total of 24 threads at its disposal.

According to our benchmarks, the Intel Core i9-9900K is approximately 30 percent slower than the Intel Core i9-12900K under single core load. In the multi-core benchmarks, the difference in performance is a lot bigger, here the Intel Core i9-9900K is about 50 percent slower than the Intel Core i9-12900K.

Both processors have an internal graphics unit. The Intel UHD Graphics 630 is used in the Intel Core i9-9900K. This graphics unit clocks at up to 1.20 gigahertz and has 24 execution units with 192 shaders. The newer Intel UHD Graphics 770 is used in the Intel Core i9-12900K. This clocks at up to 1.55 gigahertz and has 32 execution units with 256 shaders.

The Intel Core i9-9900K supports up to 128 gigabytes of DDR4-2666 memory. With the Intel Core i9-12900K, up to 128 gigabytes of RAM can also be operated, but on the one hand with the faster DDR4-3200 memory or also with the newer DDR5 memory of the DDR5-4800 type.

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