Hey im thinking of bying a 520w, for the xfx 5770, Cos the one i have now is at 300, and when i start i get the no video output message and then black screen, i have connected the 6pin, But the fan is going verry slow so, will 520w be okey? They say minmum of 450w.
+3.3V - 22 A 4 x 4 pin 4 x 15-pin 1 x power, 6-pin PCI Express 1 x power, 8 pin +12 V
+5V - 15 A
+12V1 - 14 A
+12V2 - 16 A
-12V - 0.3 A
+5VSB - 2.5 A
The Graphic card REC: * PCI Express or PCI Express 2.0 compliant motherboard with one X16 graphics slot
* 450 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended.
* Minimum 1GB of system memory
Now here is the site for the PSU if you want the whole info. http://www.komplett.se/k/ki.aspx?sku=500559&view=detailed#ProductTabs