i think that most experienced watercoolers can roughly guess the performance of the blocks just by looking at the block design, I think we pretty much all know the top three blocks will probably be the EK, Koolance and DD, swiftech's block will probably have lower GPU temps but much higher VRM temps, and the aquacomputer block is the only one I wont hazard a guess about since I have no idea what the the effect of the inlet/outlet design will be be.

From what other reviews I can find the koolance 470 block beats the BP and the EK 470 blocks. The koolance 480 block came out on top in a german round up, but as other posters have said the GPU temps will be mostly the same across the range apart from that joke of a BP block, its the VRM temps that interest me and skinnee is so far the ONLY person that has bothered to actually record the vrm temps, i think this roundup will be the only one that can definitively compared the overall block performance!! And that is why I am nervous.

I am hoping to get at least 850 on the core for 24/7 use.