The ROG Strix Radeon RX 6600 XT offers potent power and bold style The ROG Strix Radeon RX 6600 XT melds the power of RDNA 2 with plenty of our own innovative ROG DNA. Our tuning starts with the heatsink. Four heatpipes run over a large base plate that draws heat away from the two most temperature-sensitive components of the graphics card: the GPU chip itself and the GDDR6 memory that rings it. Those pipes run through a high-surface-area heatsink that helps rapidly transfer away heat to allow for low temperatures and the highest possible clock speeds. A pair of fans featuring our latest Axial-tech design move lots of air through the heatsink without raising noise levels. We achieve this challenging balance with more fan blades, smaller fan hubs, a highly swept blade design, and notched barrier rings that all optimize the path of airflow through the heatsink to quietly put lots of cooling airflow right where it's needed.