have buy a EVGA GTX 550 TI SUPERCLOCKED and have a PSU
A Power Golden Deluxe 580-Watt 20+4 pin ATX Power Supply General Features: 580-Watt Low noise dual 80mm fan Fan Speed Controller Golden Casting Mirror Finish Short Circuit and Over-Voltage Protection Thermal Overload Cut-Off Protection Power Specifications: 115V, 230V 60/50 Hz switchable power supply +3.3V / 35A +5V / 45A +12V / 19A -12V / 0.8A -5V / 0.5A +5 Vsb / 3A Power Connectors: One (1) 14-inch 20+4-pin ATX power connector One (1) 14-inch 12V connector Two (2) SATA connectors Six (6) peripheral connectors Two (2) Floppy connectors Dimensions: 6 x 5.5 x 3.5-inches (L x W x H, approximate)
can this PSU is good for this card ?
That should be more than what your computer needs. The GTX 550 Ti with an i5 Sandy Bridge could even run on a low quality integrated 450w PSUs that came with a cheap chassis.
Yes that will be easily enough. that card uses barely anything my cousin has a 530w and it easily runs a 460 which uses a decent amount more power so you should have more than enough.