Here are a list of the least expensive pre-built RTX 30 series gaming PCs available at Amazon and Newegg. The benefit of these PCs is that they are already prebuilt, which means that they'll ship very quickly. Newegg's PCs, for example, should arrive by the end of September. The RTX 3060 Ti (comparable to RTX 2080 SUPER) is powerful enough to handle any game at up to 1440p resolution.