Thats been arround for years, as I said your post in the basics and new forum, its down to the firmware on the cards not the hardware.
TBH in my experiance, maya runs perfectly well with gforce cards, I can use open GL with huge textures on high quality viewport rendering, hardware render anything I want, the lines are nice and crisp, so I really cant figure out what difference a pro card would actually make, for me that is.
I personally wouldent risk doing that just in case, for whats going to be a very minimal performance increase.
"No pressure, no diamonds" Thomas Carlyle