Yes looks like your right.
I wouldn't waste money on putting a Phenom I into a rig unless it had a low end X2 and you wanted to use it for encoding or somethin where the 4 cores were getting well used.
Or you were getting the 9600 real cheap.
See if you can get one second hand for $50 and if so then try it.
You didn't say what you mainly use the PC for ... is it for light gaming or just work etc?
The Phenom I's are not much of a jump up from an X2 - albeit in a few areas they are.
What has it got in it now?