The best reference cards the ones with just shroud and a blower design are from EVGA. On the Nvidia side you will not find a better reference card maker. They offer great support and warranty and also have a neat program called the step up program where you are able to upgrade your graphics card within the first 90 days up to a faster card. So in your case lets say you got the 670 but in 3 months time the 770 comes out and you wanted that you could do that. If you go with a reference card from EVGA I would recommend the signature 2 card.
Thanks for the info.
I checked the link and thats not a reference card, thats a FTW Signature 2 card which its overclocked to 1006 MHz and costs $420, I intend to buy a reference model card that doesnt cost more tan $375.
The reference model cards are clocked at 915Mhz.
All of EVGA’s cards are reference by design with the exception of the water blocked cards. The reason why I suggested the signature 2 card is that it’s the best air cooled card from them because its as close as they get to aftermarket cooling wise. Taking a look onto newegg I saw this one. Which has a mail in rebate to bring it down to $359 may be worth your time looking at that one then given your price range.