What do u mean by " PSU CRASHED"??
Did it burn out? or just the PC didn't start? And how ca u make sure its due to PSU? It maybe due to the UPS also.
I recomend u to connect the PC directly to main for testing without the UPS and run some heavy game. A 7600GT need 18A on the +12v rail and most stock PSU can easily provide it.
I ran my system on stock zebronics 400w for more than 8 months, and now ive moved to 500w platinum as ive added one more optical drives and two HDDs and planning for higher overclocking. It has 22A on 12v rails and is much more stable.
The cracses may also be due to overheating. To calculate the power consumption of ur PC and also to find which capacity PSU suits u, just have a calculation and post the reply.
Calculate with 100% CPu utilization and 100%PSu utilization and component aging @ 50%.
http://www.extreme.outervision.com/p...ulatorlite.jsp