AMD Ryzen 9 7945HX3D vs AMD Ryzen 9 7900

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

11621 points
12696 points
9% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

10251 points
12933 points
26% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

12118 points
12616 points
4% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

12323 points
12600 points
2% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Ryzen 9 7945HX3D and the Ryzen 9 7900? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

12988 points
16% slightly higher 3DMark Physics score
11128 points
Blender score

Blender score

Cycles Render (Samples per minute)

463.95 points
17% slightly higher Blender score
394.92 points
Cinebench R23 score

Cinebench R23 score

Multi threaded benchmark

32782 points
32% slightly higher Cinebench R23 score
24776 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

16655 points
16768 points
0.68% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

2764 points
2868 points
3% 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

2.30 GHz
3.70 GHz
60% significantly higher clock speed

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

55 W
18% slightly lower TDP
65 W

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L1 Cache

Smallest embedded memory, but the fastest

1024 KiB
33% slightly more L1 cache
768 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

192 MiB
200% significantly more L3 cache
64 MiB

Other details

Rank

Ranking in the hardwareDB database

56th of 1,089
45th of 1,089

Family

The product line

Ryzen 9
Ryzen 9

Release date

The official date of release of this chip

2023 July
2023 January

Memory Type

The type of memory used by this chip

DDR5
DDR5

Is Unlocked

Can this CPU can be overclocked

-
Yes

Ryzen 9 7945HX3D vs Ryzen 9 7900 benchmarks

In our benchmarks, the Ryzen 9 7900 beats the Ryzen 9 7945HX3D in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 7945HX3D in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Ryzen 9 7945HX3D has slightly more cores with 16 cores compared to the Ryzen 9 7900 that has 12 cores. It also has more threads than the Ryzen 9 7900. With our hardware info, we find that the Ryzen 9 7900 has a significantly higher clock speed than the Ryzen 9 7945HX3D. Furthermore, both these CPUs have identical turbo speeds. A Ryzen 9 7945HX3D CPU outputs less heat than a Ryzen 9 7900 CPU because of its slightly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The info from our database shows that the Ryzen 9 7945HX3D has more L2 cache than the Ryzen 9 7900. The Ryzen 9 7945HX3D 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 Ryzen 9 7945HX3D has more threads than cores. Each physical core is split into multiple threads.

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