Intel Core i9-11900K vs AMD Ryzen 9 8945HX

Compare Intel 11th Generation Core i9 8 core CPU vs AMD Ryzen 8000 Series 16 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Benchmark Score

Overall Score

A combined score of all workloads

8281 points
8535 points
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

10754 points
32% slightly better gaming score
8107 points

Multitasking Score

Performance in workloads using up to 8 cores

7475 points
8825 points
18% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

7270 points
9118 points
25% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i9-11900K and the Ryzen 9 8945HX? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

212.26 points
468.88 points
120% significantly higher Blender score

Specifications

Cores

Number of physical processing units

8
16
100% significantly more cores

Threads

Number of logical processing units

16
32
100% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.5 GHz
39% slightly higher clock speed
2.50 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.3 GHz
5.4 GHz
1% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

125 W
55 W
127% significantly lower TDP

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

640 KiB
1024 KiB
60% significantly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

4 MiB
16 MiB
300% significantly more L2 cache

L3 Cache

General memory pool for all cores

16 MiB
64 MiB
300% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

136th of 1,089
124th of 1,089

Family

The product line

11th Generation Core i9
Ryzen 8000 Series

Release date

The official date of release of this chip

2021 February
2025 April

Memory Type

The type of memory used by this chip

DDR4-3200
DDR5

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Supports ECC memory

Does this CPU support error correcting memory

No
-

Core i9-11900K vs Ryzen 9 8945HX comparison

According to the hardwareDB Benchmark tool, the Ryzen 9 8945HX is faster than the Core i9-11900K. Despite this, the Core i9-11900K has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Ryzen 9 8945HX has significantly more cores with 16 cores compared to the Core i9-11900K that 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 Ryzen 9 8945HX. Despite this, the Ryzen 9 8945HX has a slightly higher turbo speed. The Ryzen 9 8945HX outputs less heat than Core i9-11900K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Ryzen 9 8945HX has significantly more L2 cache than the Core i9-11900K. The Ryzen 9 8945HX also has significantly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i9-11900K has more threads than cores. Each physical core is split into multiple threads.

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