AMD Ryzen 9 7900X3D vs AMD Ryzen 9 8945HX

Compare AMD Ryzen 9 12 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

13385 points
56% significantly better overall score
8535 points

Gaming Score

The raw gaming performance with a fast GPU

13203 points
62% significantly better gaming score
8107 points

Multitasking Score

Performance in workloads using up to 8 cores

13450 points
52% significantly better multitasking score
8825 points

Heavy Workload Score

Performance in workloads using up to 16 cores

13474 points
47% significantly better heavy workload score
9118 points

Free CPU Benchmark

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Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

398.41 points
468.88 points
17% slightly higher Blender score

Specifications

Cores

Number of physical processing units

12
16
33% slightly more cores

Threads

Number of logical processing units

24
32
33% slightly more threads

Clock Speed

Base frequency at which the chip operates

4.40 GHz
75% significantly higher clock speed
2.50 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.6 GHz
3% slightly higher turbo speed
5.4 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

120 W
55 W
118% significantly lower TDP

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

768 KiB
1024 KiB
33% slightly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

12 MiB
16 MiB
33% slightly more L2 cache

L3 Cache

General memory pool for all cores

128 MiB
100% significantly more L3 cache
64 MiB

Other details

Rank

Ranking in the hardwareDB database

38th of 1,089
124th of 1,089

Family

The product line

Ryzen 9
Ryzen 8000 Series

Release date

The official date of release of this chip

2023 February
2025 April

Memory Type

The type of memory used by this chip

DDR5
DDR5

Is Unlocked

Can this CPU can be overclocked

-
Yes

Ryzen 9 7900X3D vs Ryzen 9 8945HX benchmarks

Our benchmark analysis concludes that the Ryzen 9 7900X3D performs better than the Ryzen 9 8945HX. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 8945HX in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Ryzen 9 8945HX has slightly more cores than the Ryzen 9 7900X3D. Indeed, the Ryzen 9 8945HX has 16 cores compared to 12 cores found in the Ryzen 9 7900X3D. It also has more threads than the Ryzen 9 7900X3D. Our comparison shows that the Ryzen 9 7900X3D has a significantly higher clock speed compared to the Ryzen 9 8945HX. Also, the Ryzen 9 7900X3D has a slightly higher turbo speed. The Ryzen 9 8945HX outputs less heat than Ryzen 9 7900X3D 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 slightly more L2 cache than the Ryzen 9 7900X3D. Despite this, the Ryzen 9 7900X3D has significantly more L3 cache compared to the Ryzen 9 8945HX.

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 Ryzen 9 7900X3D has more threads than cores. Each physical core is split into multiple threads.

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