As stated before, the Northbridge waterblock is 100% copper with 1/2" barbs. A store here in Japan already had this board but only like 5 of them and by the time I found out they were already sold out. The price on the board here was 27,800 JPY which is about $309 so not bad at all!

http://www.dospara.co.jp/5goods_part...&ic=90044&lf=0