Der8auer tested two very unusual cooling solutions from Aliexpress aimed at reducing the surface temperature on the backplate of the Best Graphics Cards. However, upon testing with a Gigabyte RX 6900 XT, he found both coolers underwhelming in their execution and provided no tangible improvements to graphics card temperatures.
Backplate cooling is nothing new, but the cooling devices Der8auer showed off are very unusual, being very big and bulky devices with active cooling. This is incredibly overkill for most graphics cards since the backplate (generally) does not house any high-wattage components that would require beefy coolers. The only exception would be the RTX 3090 (non-Ti), which features half of its GDDR6X memory ICs on the rear of the card. But even in this case, passive cooling from a backplate is generally good enough unless you're looking into memory overclocking.
