AMD Ryzen 9 3900X vs AMD Ryzen Threadripper 3990X

Compare AMD Ryzen 9 Desktop 12 core CPU vs AMD Ryzen Threadripper 64 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

101 %
4% slightly better overall score
97 %

Gaming Score

The raw gaming performance with a fast GPU

99 %
106% significantly better gaming score
48 %

Multitasking Score

Performance in workloads using up to 8 cores

101 %
116 %
14% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

101 %
128 %
26% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Ryzen 9 3900X and the Ryzen Threadripper 3990X? Download our free and quick PC Performance Test.

Other Benchmarks

Geekbench (multi) score

Multi threaded benchmark

118% significantly higher Geekbench (multi) score

Geekbench (single) score

Single threaded benchmark

5% slightly higher Geekbench (single) score



Number of physical processing units

433% significantly more cores


Number of logical processing units

433% significantly more threads

Clock Speed

Base frequency at which the chip operates

4 GHz
31% slightly higher clock speed
3 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
6% slightly higher turbo speed
4 GHz


Thermal Design Power: Measure of heat generated by the CPU

105 W
166% significantly lower TDP
280 W

Memory Channels

Lanes for simultaneous memory access

100% significantly more memory channels

L1 Cache

Smallest embedded memory, but the fastest

768 KiB
4,096 KiB
433% significantly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

6 MiB
32 MiB
433% significantly more L2 cache

L3 Cache

General memory pool for all cores

64 MiB
256 MiB
300% significantly more L3 cache

Other details


Ranking in the hardwareDB database

48th of 1,327
56th of 1,327


The product line

Ryzen 9 Desktop
Ryzen Threadripper

Release date

The official date of release of this chip

July 2019
July 2020

Memory Type

The type of memory used by this chip


Is Unlocked

Can this CPU can be overclocked


Ryzen 9 3900X vs Ryzen Threadripper 3990X benchmarks

According to the hardwareDB Benchmark tool, the Ryzen 9 3900X is faster than the Ryzen Threadripper 3990X. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen Threadripper 3990X in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Ryzen Threadripper 3990X has significantly more cores with 64 cores compared to the Ryzen 9 3900X that has 12 cores. It also has more threads than the Ryzen 9 3900X. Our comparison shows that the Ryzen 9 3900X has a slightly higher clock speed compared to the Ryzen Threadripper 3990X. Also, the Ryzen 9 3900X has a slightly higher turbo speed. A Ryzen 9 3900X CPU outputs less heat than a Ryzen Threadripper 3990X CPU because of its 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 Threadripper 3990X has significantly more L2 cache than the Ryzen 9 3900X. The Ryzen Threadripper 3990X 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 3900X has more threads than cores. Each physical core is split into multiple threads.


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