The problem i have with closed-loop cooling being built into a GPU is it dates the hardware. Once the fluid evaporates or the pump fails, the whole thing is useless. This usually happens within 3-5 years; just beyond the warranty of the GPU. If you used it for 2 years, then tried to sell it to get some of your money back, you'd take a significant loss due to no one wanting to chance how much life may be left.