Quote from EKwaterblacks.com: "High performance VGA water block for Ati Radeon X1800 and X1900 series graphic cards (not for all in wonder series). Base is made of electrolytic copper. Top is made of quality acrylic glass. The sealing is preformed by quality rubber washer. Aluminium part is made for cooling the power regulatros. Block is mounted with M3 and M2,5 screws. The block fits on X1900 XTX!"
the x1900xt, xtx, x1950xt, xtx all use the same pcb. so there should't be any problems fitting the block to a x1950xtx
lol sorry, its just i am moving house and all my stuff is boxed up. otherwise i would have probably read that cheers guys.