Many thanks for the advices MK, but another problem is i don't have many option... ATI is almost unavilable, in one week there will be some good products around so i'll check'em out and definitely get backe to you for consultation...
here is a link for the sky road power supply...
http://www.tipidpc.com/viewitem.php?iid=1928448
i have other options i'll get the models tomorrow and take ur advices in considration
i have a raptorx rt-450psp power supply
ASUS P5K motherboard
AUSU EN8600 GT
i going to buy an XFX Geforce 8800 GT alpha dog edition (1GB DDR3, GPU 1GH)
can my power supply handle the new video card ? and i hope u give further information about this version of geforce 8800.
many thinks...