In about three weeks, retailers will begin selling AMD’s recently announced Ryzen 3000 XT processors, including the Rzyen 9 3900XT, Ryzen 7 3800 XT, and Ryzen 5 3600 XT. Ahead of their retail debut, at least two motherboard makers are prepping BIOS updates that are optimized for the new chips.

These “XT” models are still based on AMD’s current generation Zen 2 architecture. Core and thread counts, cache arrangements, and TDP ratings are unchanged compared to the regular X variants. However, the XT models come with faster clocks (100-200MHz) and, according to AMD, up to a 4 percent bump in single-threaded performance.

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