NVidia today announced the GeForce 6600 series, which will include a regular version of that chipset along with a GT version. Both these cards are considerably more affordable than the 6800 cards, with the regular 6600 card setting you back $149 while the GT version will be $199. Though the press release mentions they'll have awesome performance in DOOM 3, that of course remains to be seen. There's a benchmark-less preview on Tech Report.