AMD Ryzen 9 7900 vs AMD Ryzen 9 9955HX

Compare AMD Ryzen 9 12 core CPU vs AMD Ryzen 9000 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

13078 points
14% slightly better overall score
11380 points

Gaming Score

The raw gaming performance with a fast GPU

13206 points
24% slightly better gaming score
10581 points

Multitasking Score

Performance in workloads using up to 8 cores

13028 points
11% slightly better multitasking score
11723 points

Heavy Workload Score

Performance in workloads using up to 16 cores

13011 points
8% slightly better heavy workload score
11982 points

Free CPU Benchmark

Want to compare your processor against the Ryzen 9 7900 and the Ryzen 9 9955HX? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

11128 points
15023 points
35% slightly higher 3DMark Physics score
Blender score

Blender score

Cycles Render (Samples per minute)

394.92 points
538.07 points
36% 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

3.70 GHz
48% significantly higher clock speed
2.5 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.4 GHz
Identical
5.4 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

65 W
55 W
18% slightly lower TDP

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

768 KiB
1280 KiB
66% significantly 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

64 MiB
Identical
64 MiB

Other details

Rank

Ranking in the hardwareDB database

40th of 1,089
61st of 1,089

Family

The product line

Ryzen 9
Ryzen 9000 Series

Release date

The official date of release of this chip

2023 January
-

Memory Type

The type of memory used by this chip

DDR5
DDR5

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Ryzen 9 7900 vs Ryzen 9 9955HX benchmarks

In our benchmarks, the Ryzen 9 7900 beats the Ryzen 9 9955HX in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 9955HX in all gaming tests too.

With info from our database, we find that the Ryzen 9 9955HX has slightly more cores with 16 cores whereas the Ryzen 9 7900 has 12 cores. It also has more threads than the Ryzen 9 7900. Our comparison shows that the Ryzen 9 7900 has a significantly higher clock speed compared to the Ryzen 9 9955HX. Furthermore, both these CPUs have identical turbo speeds. The Ryzen 9 9955HX outputs less heat than Ryzen 9 7900 thanks to a slightly 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 9955HX has slightly more L2 cache when compared to the Ryzen 9 7900. However, both these chips have the same amount of 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 Ryzen 9 7900 has more threads than cores. Each physical core is split into multiple threads.

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