honestly if i could get 470 4g cards this last week, I would have, but they are all sold out here. I did have the possiblity of getting some 470 4g xfx out of package from the factory tomorrow (now later today), but i just went ahead yesterday and ordered the 480 8g cards out of package because 1. I like the removable fans so much that I thought it was worth paying the extra 30$ for them... it makes cleaning out dust and dog hair so easy... and 2. I didnt want to risk the 480 8g getting sold out in case the 470 4g seller did not get the 470s later today (which happens here, someone says they can get, will get something, then dont)... 470s and 480s are so hard to get here now I didn't want to risk it when i saw the 6 480 8gs for sale. (only 6 were for sale so i nabbed them)
They are reissuing 470D here from some manufacturers, namely dataland and now biostar is making their own 470D.. but those wont be out til end of month and I need to build now... not in 2 weeks.
That being said, I do feel Oryn is right about future proofing.. thought at the rate GPUs are increasing in performance these days... not sure either 480 or 470 will be worth it in 2 years for example.. (as 4G might not be enough for mining ethereum or ethereum classic in about 1 to 1.5 years) but i guess i protected myself eitherway since i have more 480 8g than 470 4g.
what brand are you looking at?