according to rockstar yes...in my experience though it might take some more oomph (GPU wise) to max the game with any level of filtering involved. GTA 4 had a similar discrepancy in their recommend specs and what it actually took to max the game setting with filtering. No filtering...you might max it fine. hopefully Rockstar does a better job on recommended spec this time around.
+1, with the 660Ti you should be able to have a mixture of Medium/High, leaning more-so towards High. There may be one of those extra bells and whistles selections you can disable, like expensive motion blur, but overall it should be fine.