Will a dual slot GPU fit into a 2U case?
I guess there is a riser that will allow that.
Also is there water cooling for 1U?
Cheers.
Yes with a flexible riser you can fit dual slot GFX cards in a 2U case.
But depending on what GFX card you are using make sure to check clearance in the case so your card is not to long to fit, many 2U cases have a good amount of space for long expansion cards but check before you get one to be sure.
You can put water cooling in a 1U case yes.
I would skip a reservoir and go for a closed loop, use the thinest radiator possible then use the 120mm Scythe slip stream slim fans since they are only 12mm thick, pick a decently strong pump since you are going without res, pick angled fittings from the water blocks to avoid bending the hose, then just pick any block that you need and your done.