Hi all. I have sapphire hd4850 with really bad cooling (stock cooling)... the idle temperature is about ~60 degrees. On full load it reaches 90~100 degrees. I saw in a shop near me Gigabyte V-Power GH-UDUP21-VC, but salesman doesn't know anything about it. I have heard that it will fit on hd4850 (as i have found here, it fits on 3850). My question is about performances of this cooler on hd4850, i couldn't find any tests on web. If anyone got this cooler on 4850 it would be very helpful to post some info about temperature and noise . Thanks in advance!