I am currently working on my first custom loop. The loop will include cpu (i7 4770k) and 2 x gpu (2x 780's). The Radiators will will be 1 x 360mm and 1 x 240 mm. I need a pump that could provide good flow for such a loop. I don't have enough room in case for a second pump/reservoir so making 2 loops is improbable. My budget for the pump is ~$200.