Intel Core i9-12900K vs AMD Ryzen 9 8945HX

Compare Intel 12th Generation Core i9 16 core CPU vs AMD Ryzen 8000 Series 16 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

13331 points
56% significantly better overall score
8535 points

Gaming Score

The raw gaming performance with a fast GPU

14234 points
75% significantly better gaming score
8107 points

Multitasking Score

Performance in workloads using up to 8 cores

13035 points
47% significantly better multitasking score
8825 points

Heavy Workload Score

Performance in workloads using up to 16 cores

12983 points
42% slightly better heavy workload score
9118 points

Free CPU Benchmark

Want to compare your processor against the Core i9-12900K and the Ryzen 9 8945HX? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

364.47 points
468.88 points
28% slightly higher Blender score

Specifications

Cores

Number of physical processing units

16
Identical
16

Threads

Number of logical processing units

24
32
33% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.2 GHz
27% slightly higher clock speed
2.50 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.2 GHz
5.4 GHz
3% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

241 W
55 W
338% significantly lower TDP

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

1280 KiB
25% slightly more L1 cache
1024 KiB

L3 Cache

General memory pool for all cores

30 MiB
64 MiB
113% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

39th of 1,089
124th of 1,089

Family

The product line

12th Generation Core i9
Ryzen 8000 Series

Release date

The official date of release of this chip

2021 November
2025 April

Memory Type

The type of memory used by this chip

DDR5-4800
DDR5

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Supports ECC memory

Does this CPU support error correcting memory

Yes
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Core i9-12900K vs Ryzen 9 8945HX specs and performance

In our benchmarks, the Core i9-12900K beats the Ryzen 9 8945HX in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 8945HX in all gaming tests too.

When comparing these CPUs we notice that they have the same number of cores but the Ryzen 9 8945HX has more threads. These CPUs have different clock speeds. Indeed, the Core i9-12900K has a slightly higher clock speed compared to the Ryzen 9 8945HX. Despite this, the Ryzen 9 8945HX has a slightly higher turbo speed. The Ryzen 9 8945HX outputs less heat than Core i9-12900K 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 i9-12900K has more threads than cores. Each physical core is split into multiple threads.

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