Hello everybody, 2 days ago my 8600GT died :-( , My PC specs are as follows: Processor: Intel Core2Duo 2.2Ghz E4500 Motherboard: ASUS P5GC-MX rev 3.0 --Image: http://img848.imageshack.us/img848/8641/motherboardb.jpg RAM: Kingston 2GB DDR2 667Mhz Graphic Card: 8600GT 512MB [died] Hard Disk: Seagate Barracuda 1 TB SATA Monitor: 17" LCD ACER [VGA D-Sub] DVD-Drive RW ASUS SATA Power Supply Wattage: 550W Picture of my power supply details : http://img811.imageshack.us/img811/9152/ps1u.jpg http://img638.imageshack.us/img638/7757/ps2qp.jpg My problem is that I want to buy the GTX 260 to replace my old and dead 8600GT (I am currently running on the intel integrated motherboard graphic chipset), I want to know if my system mainly the Motherboard and Power Supply will support it. I don't have the budget to upgrade an entire system for now, in my country the card is quite expensive about 375 in dollars, other PC parts are also quite highly priced. I also know that the GTX 260 is kinda overkill for my system but still I want it and it will be a major leap compared to the 8600GT and despite my actual system won't use the card at its best, in the future it will serve me right when I upgrade my system. Secondly I want someone to explain to me whats all about the Power Supply double/single 12V rail and amps etc, I've read on other forums about this I can't seems to understand a damn thing about this, its so frustating and boring cause i've read the card need something like 38Amp from the Power Supply. Thank you in advance for your reply's' and support and excuse the 'noobness' of my questions.