AMD Ryzen 9 3900XT vs AMD Ryzen 9 7940HS

Compare AMD Ryzen 9 Desktop 12 core CPU vs AMD Ryzen 9 8 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

8378 points
8447 points
0.82% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

8533 points
10377 points
21% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

8330 points
6% slightly better multitasking score
7810 points

Heavy Workload Score

Performance in workloads using up to 16 cores

8329 points
9% slightly better heavy workload score
7629 points

Free CPU Benchmark

Want to compare your processor against the Ryzen 9 3900XT and the Ryzen 9 7940HS? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

8585 points
10% slightly higher 3DMark Physics score
7779 points
Blender score

Blender score

Cycles Render (Samples per minute)

275.17 points
22% slightly higher Blender score
225.40 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

9918 points
11485 points
15% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1737 points
2444 points
40% slightly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

12
49% significantly more cores
8

Threads

Number of logical processing units

24
49% significantly more threads
16

Clock Speed

Base frequency at which the chip operates

3.8 GHz
4.00 GHz
5% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

4.7 GHz
5.2 GHz
10% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

105 W
54 W
94% significantly lower TDP

L1 Cache

Smallest embedded memory, but the fastest

768 KiB
49% significantly more L1 cache
512 KiB

L2 Cache

Secondary embedded memory, slower than L1 cache

6 MiB
8 MiB
33% slightly more L2 cache

L3 Cache

General memory pool for all cores

64 MiB
300% significantly more L3 cache
16 MiB

Other details

Rank

Ranking in the hardwareDB database

132nd of 1,092
129th of 1,092

Family

The product line

Ryzen 9 Desktop
Ryzen 9

Release date

The official date of release of this chip

2020 July
2023 April

Memory Type

The type of memory used by this chip

DDR4
DDR5 (FP7r2)

Is Unlocked

Can this CPU can be overclocked

Yes
No

Ryzen 9 3900XT vs Ryzen 9 7940HS specs and performance

In our benchmarks, the Ryzen 9 7940HS beats the Ryzen 9 3900XT in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 3900XT in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Ryzen 9 3900XT has significantly more cores with 12 cores compared to the Ryzen 9 7940HS that has 8 cores. It also has more threads than the Ryzen 9 7940HS. These CPUs have different clock speeds. Indeed, the Ryzen 9 7940HS has a slightly higher clock speed compared to the Ryzen 9 3900XT. Also, the Ryzen 9 7940HS has a slightly higher turbo speed. The Ryzen 9 7940HS outputs less heat than Ryzen 9 3900XT thanks to a 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 7940HS has slightly more L2 cache when compared to the Ryzen 9 3900XT. Despite this, the Ryzen 9 3900XT has significantly more L3 cache compared to the Ryzen 9 7940HS.

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 3900XT has more threads than cores. Each physical core is split into multiple threads.

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