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

Compare Intel 9th 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?

CPU Comparison

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Price

The cheapest price from our partner retailers

$ 470.48
$ 289.00
$ 181.48 significantly less expensive

Benchmark Score

Overall Score

A combined score of all workloads

6105 points
13331 points
118% significantly better overall score

Gaming Score

The raw gaming performance with a fast GPU

7952 points
14234 points
78% significantly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

5494 points
13035 points
137% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

5338 points
12983 points
143% significantly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i9-9900 and the Core i9-12900K? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

9955 points
11701 points
17% slightly higher 3DMark Physics score
Blender score

Blender score

Cycles Render (Samples per minute)

148.10 points
364.47 points
146% significantly higher Blender score
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

7103 points
15144 points
113% significantly higher Geekbench 5 (multi) score
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1598 points
2550 points
59% significantly higher Geekbench 5 (single) score
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

7287 points
15365 points
110% significantly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1617 points
2616 points
61% significantly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

8
16
100% significantly more cores

Threads

Number of logical processing units

16
24
49% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.1 GHz
3.2 GHz
3% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
5.2 GHz
4% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

65 W
270% significantly lower TDP
241 W

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
1280 KiB
150% significantly more L1 cache

L3 Cache

General memory pool for all cores

16 MiB
30 MiB
87% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

246th of 1,089
39th of 1,089

Family

The product line

9th Generation Core i9
12th Generation Core i9

Release date

The official date of release of this chip

2019 May
2021 November

Memory Type

The type of memory used by this chip

DDR4-2666
DDR5-4800

Is Unlocked

Can this CPU can be overclocked

No
Yes

Supports ECC memory

Does this CPU support error correcting memory

No
Yes

Core i9-9900 vs Core i9-12900K specs and performance

According to the hardwareDB Benchmark tool, the Core i9-12900K is faster than the Core i9-9900. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-9900 in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i9-12900K has significantly more cores with 16 cores compared to the Core i9-9900 that has 8 cores. It also has more threads than the Core i9-9900. With our hardware info, we find that the Core i9-12900K has a slightly higher clock speed than the Core i9-9900. Also, the Core i9-12900K has a slightly higher turbo speed. A Core i9-9900 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 i9-9900 has more threads than cores. Each physical core is split into multiple threads.

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