If you get the ASUS Direct CU II GTX660ti
you will have both a silent card and one which does not need water cooling.
ASUS' propitiatory 'Super Alloy Power'
manufacturing processes provides cooler operation with longer component lifespan. http://www.youtube.com/watch?v=IUX5Mi996oY
Plus their direct CU cooling solutions are silent.
Check out what makes the GTX660ti directCUII different from the reference GTX660ti:GTX 660 Ti Teardown & Comparison: ASUS DirectCU II vs Referencehttp://www.youtube.com/watch?v=eRi9wow9sq0&feature=em-uploademail
It is an impressive difference ASUS has made with their custom PCB.