I don't use them, have yet to have a need for one on my builds for myself and family, if clients want LC, I offer them a screwdriver 😉 I'm long past building anything someone wants, I don't do liquid (had a couple clients screw around with LC builds and ruin them) and I only build Intel on Asus, the Rock and GB mobos,,, if some one wants to insist on LC I send them to another guy I know, or if they want to build on MSI, BioStar or the like, I'll basically tell them good luck, don't know any local builders that build on those....it's a bit of a kick in the butt to pass up an easy C-Note but it's not worth the problems I might likely encounter and have to deal with