Your power requirements will need to take into consideration your remaining components in the tower. This site will allow you to enter the information and will output you a recommended value.
The card itself requires a 6 pin PCI express power cable from the power supply, which that unit has two 6+2 plugs.
If you already own that PSU, yes it will be fine. It's not the greatest PSU ever built, and normally I would recommend a better make. However, at 650w it has plenty of overhead capacity for the 150w card you want to add, it should be fine.
Your power requirements will need to take into consideration your remaining components in the tower. This site will allow you to enter the information and will output you a recommended value.
The card itself requires a 6 pin PCI express power cable from the power supply, which that unit has two 6+2 plugs.