I am thinking to buy Sapphire HD 7750 (Low Profile) will it work on my dell 960 sff?, i have 235W PSU and without any COOLER etc.... please tell me, and i have watched youtube video in which a user is playing games in this GRAPHIC CARD in 240W PSU.... in official site recommended PSU is 400W. I keep my cpu case open (i never close it due to less space in my system), and also i can attach a fan to it. Im currently using NVIDIA 210 1Gb, its working fine... please tell me im waiting. Thanks in advance