when I was using a 6600GT - AGP, I was getting 1300ish on '06. played BF2 well enough at 1280x1024 though.
can't comment on whether it was worth what you paid for it, as I don't know what you paid for it... and we probably don't need to know either, prices change so fast it will always be dissappointing to get a current answer to that question...
Clock the memory down a few mhz and try that. If that doesn't work it must be heat. 60c usually won't cause any artifacting but I guess it is possible with the new card, haven't seen much data on them yet.
I kinda like the blue anyway, makes it cool looking