AMD Threadripper 3970X And 3960X Review: Multi-Threaded Domination

Ryzen Threadripper 3970X & 3960X - Speedometer, LAME MT, x265, Y-Cruncher

Next up, we have some numbers from the Speedometer 2.0 test available at The Speedometer Benchmark Suite uses a wide array of latency and throughput benchmarks to evaluate web application performance, and all of the results are tabulated into a final score. The benchmark measures performance of an array of browser-based technologies used on modern, rich web applications. Scores in this benchmark are an indicator of the performance users would see when browsing and running advanced web apps.

Speedometer 2.0
Web App Performance Testing

All of the systems were tested using the latest version of Microsoft's Edge browser, with default browser settings, on a clean install of Windows 10 Professional x64.


This chart is a clear indicator of the performance improvements and enhancements offered by 3rd Gen Threadripper 3000 series processors versus their predecessors. Whereas previous-gen Threadrippers bring up the rear here, the new 3rd Gen Threadripper 3000 series processors finish near the top and trail only the higher-clocked processors in the stack.
Audio Conversion and Encoding
In our custom LAME MT MP3 encoding test, we convert a large WAV file to the MP3 format, which is a popular, day-to-day use case for many end users, to provide portability and storage of their digital audio content. LAME is an open-source mid to high bit-rate and VBR (variable bit rate) MP3 audio encoder that is used widely around the world in a multitude of third party applications.

In this test, we created our own 223MB WAV file and converted it to the MP3 format using the multi-thread capable LAME MT application in single and multi-thread modes. Processing times are recorded below, listed in seconds. Shorter times equate to better performance.


This benchmark only leverages one or two cores and the workload doesn't cause any of the processors to boost to their maximum frequencies, so the many-core chips aren't really taxed here. Regardless, Intel's architectures have a clear advantage and finish at the top, though the new 3rd Gen Ryzen Threadrippers are a clear improvement over their predecessors.
X265 Benchmark
Video Encoding Test

The multi-threaded HWBOT x265 Benchmark is based on the open source x265 encoder that leverages modern CPU instructions to speed video encoding. We tested the CPUs represented here with the 64-bit encoder using the default 1080p workload.


The new 3rd Gen Ryzen Threadripper 3960X and 3970X blew past the competition in this video encoding benchmark and crushed every other processor we tested. The new chips finish in first and second place, well out in front of the 16-core Ryzen 9 3950X, and 35%+ ahead of Intel's flagship Core i9-10980XE, which also launches today.

MT Pi Calculator
Y-Cruncher is a multi-core-capable tool that calculates the value of pi to a specified number of digits. In this case, we ran the tool on all threads and had the application calculate the value of pi to 1 billion digits. The values below are the time required to perform the calculation expressed in seconds. As a result, lower values indicate better performance.

The 3rd Gen Ryzen Threadripper 3000 series processors jump into the lead in the Y-Cruncher multi-threaded benchmark as well, besting the Intel Core i9-10980XE by over five seconds.

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