Advice on Graphics Cards

[Abriael]

Main reason for her to get the 6670 is due to her 400W PSU. A 660 is a much better card, but if her budget comes into play she would have to spend 150$ more on the 660, and buy a new PSU for about 100-150$ maybe more.

And from the looks of it, her PC looks like it is not a custom build, most likely a generic PC bought from the store, that being said her case must be very small, with low cooling, so I'm not even sure if she could fit a 660 into her current case. A 6670 is a pretty small card and should fit into most cases (best buy brand PC's).

1: she can get a Corsair 500 PSU which is plenty for any non SLI/crossfire system nowadays for $29 with the rebate, which I linked.
2: If you read my posts, I researched her PC rather throughly. It's a 16.89 inches case and Yes, it can fit a 660 (they aren't really big anyway, less than two inches of difference with the 6670) and considering that the 660 is VERY heat efficient (and the gigabyte one is one with the best heat dissipating solution out there between every card on the market), it's a much better solution than an old 6670 with it's obsolete heat dissipating solution.
For added safety all she has to do is to measure from the base of her current GPU at the back of the case and see if she has 10.3 inches of space to the HD bay, but it's almost impossible that she doesn't.