Was searching around and found this (see hyperlinks below on 7950 GT vs 1950 pro).
Basically these are the specs for both cards:
------------------------------1950 PRO------------------7950 GT
Core clock: ----------------575 Mhz--------------------550 Mhz
Memory clock: ------------1.38 Ghz--------------------1.4 Ghz
Memory interface: --------256-bit----------------------256-bit
Memory transfer rate:----44.16 Gb/s------------------44.8 Gb/s
Pixels per clock:-----------36---------------------------24
Looks like both of them are almost similar (naturally, so that Nvidia can compete with ATI!), but the pixels per clock is more for 1950pro.
Wished there were reviews on how these cards compare to each other.
Hyperlinks:
http://www.hardwaresecrets.com/article/131http://www.hardwaresecrets.com/article/132