In some cases yes, but it is also more restrictive. This means it is best used in a CPU only loop, and not very good if you have a VGA or Chipset block in the same loop.
Watercooling:
EK Supreme HF, EK FC GTX 680 Block, MCR320+Gelid Silent 12 Push/Pull, DD Pump, EK Multioption 100ml Res, EK Coolstream XT 220 RAD Gelid Wings Push/Pull.
People seem to swear by both, my FC block seems good, and I dont mind the hit to my overall temperatures, though they are LARGE. If you're worried about warping, then go with the smaller block.