AMD Ryzen 9 3900XT and Ryzen 7 3800XT hit 3DMark Fire Strike; talk of higher base and boost clock speeds appears unfounded
Early 3DMark listings have given us a sense of what the Ryzen 7 3800XT and Ryzen 9 3900XT are capable. Brought to our attention by @_rogame, the Ryzen 7 3800XT and Ryzen 9 3900XT will unsurprisingly succeed the Ryzen 7 3800X and Ryzen 9 3900X. On the one hand, the listings confirm that the XT processors will likely offer modest performance improvements over their predecessors. However, they have also put paid to the notion that the XT refresh would feature 200 MHz higher boost clocks than the likes of the Ryzen 7 3800X and Ryzen 9 3900X.
In plain terms, Chiphell claimed that the Ryzen 9 3900XT would be capable of reaching 4.8 GHz, with the Ryzen 7 3700XT trailing by 100 MHz with a maximum boost clock of 4.7 GHz. Both processors may still be capable of reaching these speeds, but only using Precision Boost Overdrive (PBO).
Instead, 3DMark reports that the Ryzen 7 3800XT and Ryzen 9 3900XT can reach 4.6 GHz and 4.7 GHz, respectively. While there are no corresponding benchmark results for the Ryzen 5 3600XT, a 300 MHz increase on the boost clock of the Ryzen 5 3600X would now seem unlikely.
Similarly, the claim of the XT series featuring 300 MHz higher base clocks appears to be off the mark, too. According to 3DMark, the Ryzen 7 3800XT and Ryzen 9 3900XT have 3.9 GHz and 3.8 GHz base clocks. In other words, the XT series appears to have the same base clocks as their X series predecessors.
Unsurprisingly then, the Ryzen 7 3800XT and Ryzen 9 3900XT have only achieved incremental improvements in 3DMark Fire Strike Physics compared to their predecessors. The Ryzen 9 3900XT score 29,172, for example, which is only 1% higher than the score achieved last year by our Ryzen 9 3900X review unit. Both processors achieved these results with 16 GB of dual-channel DDR4 RAM running at 3,733 MHz, for reference.
We have not reviewed the Ryzen 7 3800X, but the Ryzen 7 3700X only falls about 5% short of the Ryzen 7 3800XT. It is worth bearing in mind that the Ryzen 7 3700X has lower clock speeds and a 40 W lower TDP than the Ryzen 7 3800X.
With an absence of more information, it would seem that these XT processors are higher binned versions of the X series. We could be wrong, but it seems unlikely that either the Ryzen 7 3800XT or Ryzen 9 3900XT will have the clock speeds uplifts that Chiphell suggested they would.
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