Seriously, those EK GPU blocks are brutal for flow restriction, just like the EK Supreme CPU block. Yeah, the pump will probably manage, the blocks are good, but your flow is going to be hurting. If you're running two GPU's, you might be better off running MCW60 or Fuzion GPU blocks instead.
__________________ QX9650 @ 4.038GHz (425x9.5) | Asus Formula Maximus | GTX280 (777/1620/1404) | Mushkin XP2-8000 Redline 2x2GB Q6600 @ 3.6GHz (400x9) | MSI P35 Platinum | 8800GTS 640MB (700/900) | Mushkin EM2-6400 2x2GB |