AMD Ryzen 9 3900XT and Ryzen 7 3800XT CPU Review

Handbrake H264

Slightly higher boost clock residency helps the 3900XT to another slim victory over its 3900X sibling. The performance gain when overclocked to 4.45GHz is considerable and useful for avid Handbrake users such as myself.

Versus the Core i9-10900K, the Ryzen 9 3900XT delivers another comfortable victory with 12% higher performance.

The 3800XT also manages more preferential boost clocks versus its 8-core, non-XT siblings, but performance is well off the 12-core Ryzen 9 3900X levels. The 3800XT’s conversion rate victory versus the Core i7-10700K competitor is just shy of 6%.

Handbrake H265

Our Handbrake H265 test is far more frequency dependent, as well as being heavily multi-threaded. The 3900XT is basically the same as a 3900X in this test, but even an overclock to 4.45GHz cannot match the performance of Intel’s 10-core 10900K.

In this instance, Intel’s 20-thread chip and its Skylake architecture come in 14% quicker than the stock-clocked 3900XT.

Better operating clocks for the 3800XT give it a small victory over the other Zen 2 eight core chips. Again, we see Intel’s Skylake architecture and high clock speeds deliver solid performance. The 10700K beats out the stock 3800XT by almost 9% in this test.

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