Temps run about ambiant+40c, so typically 65c in our office.
ok. i was wondering how much influence the hot water from the first gpu has on the next up to the last one - like how many gpu's can I put in line in a water cooled system until I need to put a radiator in
That will depend on your radiator, fans, and pump. 6 GPUs in a single loop is a lot of heat to dissipate. We use a big radiator with lots of fans and a high speed pump. The pump will move the water around the entire loop in about 3 seconds flat, so the temp increase from gpu to gpu is minimal.