They must sell well, as every brand is scrambling to release more of the things, Corsair among them with its latest release: the Corsair Frame 4500X. Image 1 of 8 (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future)Corsair has been pretty generous with cable cut-outs for various sizes of motherboards (including those with Back-Connect). Image 1 of 4 (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future)You'll save a bit of cash with the LX-R option versus buying a triple-pack of LX120-R fans from Corsair: a set of three usually costs £85. Image 1 of 8 (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future)Moreover, I'd recommend installing three more LX120 fans for the best cooling in the Frame 4500X. Image 1 of 5 (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future)A four degree difference is nothing to be sniffed at.