Hey my friend has a dell inspiron 546, and he was wondering if I could upgrade his GPU. He wants to do some HD video rendering. He was interested in getting the GTX 560 since my friend is selling one for 120 new. One thing we noticed, it needs to be powered and the current PSU doesn't supply the connections for it.
Would you recommend any other GPU?
Will any PSU fit?
How much power does he really need?