http://www.ukgamer.com/forum/showthread.php?s=88bded5b9a805484c6b7345020449c24&threadid=296&perpage=15&pagenumber=2


You have to cool the memory - the memory is what produces most of the heat. 
Some sort of watercooling setup has to be in order.

Gainward might start selling their thing soon otherwise go with a custom job.