Yeah mb, it is one loop. I think what I meant was like which order should I place the radiators in, if I first have the gpu then the cpu. But I assume that doesn't really matter (or at least i think I saw a video from jayztwocents where he said it wasn't too important). I'm not sure if my motherboard has a temp probe header, I had a look at the specifications on their site (the msi creator trx40) but I didn't see one, unless I wasn't looking properly. If you think one 360 and one 240 won't be enough then I think the only solution for me would be to upgrade my case to one that supports two 360mm rads, as my current one only supports one afaik.