I have a EK-DCP 2.2 X-res pump/res combo. I upgraded the res to a bigger one. Is the pump good enough to do a loop with a cpu, 2 gpu's a360 rad and a 280 rad?
Right, it is 1.6ish gpm in a hypothetical, no restriction whatsoever environment. You don't have a no restriction environment; each of your waterblocks restrict, your rads restrict, your fittings, especially any angled fittings, restrict, etc. As others have said, I suggest going with a real D5 or DDC pump.
The guy from Ek support said it could do two gpu and a cpu just fine. I have no clue about a second rad though. I'm confused on http://shop.ekwb.com/ek-xres-dcp-2-2 it syas its a 12v pump with 400lph. Did the math and thats 1.6ish gpm. Wonder if this enough for what I need. Or maybe there is a pump you would recommend that would go with the bigger res I ordered? it needs to have 1/4 holes for fittings and 16/10mm.
Right, it is 1.6ish gpm in a hypothetical, no restriction whatsoever environment. You don't have a no restriction environment; each of your waterblocks restrict, your rads restrict, your fittings, especially any angled fittings, restrict, etc. As others have said, I suggest going with a real D5 or DDC pump.