- 4870 is on a beta driver, GTX is on an official driver
- 4870 has a VLIW architecture which is much tougher to code for, thus enhancing the importance of driver maturity
- No Catalyst version for 4870 will allow over a 790 overclock, so it's too early to tell how well the card overclocks when it's software-limited
- The current driver keeps the fan speed locked so that it doesn't spool up like it should--keeping the card hotter and, again, limiting overclocking potential
I mean, really.. this is a stupid thread at this point in the game. It is far too early to draw an accurate comparison between these cards.