AMD Ryzen 9 7945HX vs AMD Ryzen 9 9900X3D

Compare AMD Ryzen 9 16 core CPU vs AMD Ryzen 9000 Series 12 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

14004 points
15772 points
12% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

12364 points
15040 points
21% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

14599 points
16008 points
9% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

14860 points
16094 points
8% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Ryzen 9 7945HX and the Ryzen 9 9900X3D? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

13984 points
2% slightly higher 3DMark Physics score
13700 points
Blender score

Blender score

Cycles Render (Samples per minute)

475.58 points
1% slightly higher Blender score
466.69 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

16083 points
20191 points
25% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

2764 points
3294 points
19% slightly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

16
33% slightly more cores
12

Threads

Number of logical processing units

32
33% slightly more threads
24

Clock Speed

Base frequency at which the chip operates

2.50 GHz
4.4 GHz
75% significantly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

5.4 GHz
5.5 GHz
1% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

55 W
118% significantly lower TDP
120 W

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

1024 KiB
6% slightly more L1 cache
960 KiB

L2 Cache

Secondary embedded memory, slower than L1 cache

16 MiB
33% slightly more L2 cache
12 MiB

L3 Cache

General memory pool for all cores

64 MiB
128 MiB
100% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

31st of 1,089
19th of 1,089

Family

The product line

Ryzen 9
Ryzen 9000 Series

Release date

The official date of release of this chip

2023 February
2025 March

Memory Type

The type of memory used by this chip

DDR5
DDR5

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Ryzen 9 7945HX vs Ryzen 9 9900X3D comparison

According to the hardwareDB Benchmark tool, the Ryzen 9 9900X3D is faster than the Ryzen 9 7945HX. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 7945HX in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Ryzen 9 7945HX has slightly more cores than the Ryzen 9 9900X3D. Indeed, the Ryzen 9 7945HX has 16 cores compared to 12 cores found in the Ryzen 9 9900X3D. It also has more threads than the Ryzen 9 9900X3D. These CPUs have different clock speeds. Indeed, the Ryzen 9 9900X3D has a significantly higher clock speed compared to the Ryzen 9 7945HX. Also, the Ryzen 9 9900X3D has a slightly higher turbo speed. A Ryzen 9 7945HX CPU outputs less heat than a Ryzen 9 9900X3D CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Ryzen 9 7945HX has slightly more L2 cache when compared to the Ryzen 9 9900X3D. Despite this, the Ryzen 9 9900X3D has significantly more L3 cache compared to the Ryzen 9 7945HX.

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 Ryzen 9 7945HX has more threads than cores. Each physical core is split into multiple threads.

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