Possible HD 6870 X2 (x2) Upgrade

K.S. · *Last edited by K.S.; 06-30-2012 at 10:21.*

I got an HD 6870 X2 for about $150, my question is: Is it worth selling my two 470s with aftermarket silent coolers for about $350 and using the profits to add another HD 6870 X2? They're selling on newegg atm for about $200, so I figure this way I'd be getting more raw gpu perf. (4 gpus) and it wouldn't really cost me anything since I'd basically be swaping in a sense. I do some gaming as well as a lot of content creation/3d rendering... I wasn't planning on upgrading but seeing how all this does is cost me time and not really money (since id be making up for the cost by selling my current cards?) I figured it couldn't hurt right? Your thoughts ppl...

also: AMD doesn't have a CUDA equivalent as I understand it... that said are 4 w/o cuda still better than 2 w/th cuda in that sense?

edit: Can/Would the 1GB ram allocated to each 6870 gpu limit me somehow? So far I've never had an issue with my current setup and each 470s not much more per gpu...