Im Planning to put either a HD 4870 or HD 5770 graphics card to replace my old 8880GTS. What are the power and amp requiremetns of the cards. Will Hiper HPU-4K580 PSU do the job? It does have a dedicated PCI-E connection if that makes any difference.
Intel E6600 2.4 GHz
ASUS P5NE-SLI motherboard
Gainward 8800GTS 640mb
2GB Corsair RAM
Windows Professional x32
A quality 400W PSU with one PCIE connector for the 5770 and a quality 500W PSU with two PCIe connectors for the 4870 is recommended.
A 5770 can pull 110W(9A) (more or less) at full load.
A 4870 can pull 200W (17A) (more or less) at full load.
Yours is a multi-rail design PSU. It can deliver 20A on the +12V1 and 18A on the +12V2.