Originally Posted by kithylin
I've ended up having to return my EVGA 560ti-448 to EVGA because it was crashing during some games and then later during every game. They sent me a gtx-660 instead.. which I don't like and I'm selling to a friend, and getting a pair of EVGA GTX-470 hydro copper instead, picked em up for $110.
So.. I don't own the 560ti any more sadly. From everything I've found online though, essentially the gtx-470's were almost the same card and core, so the 560ti-448 was just a re-named gtx-470? Exact same nvidia core, same transistor count, same power draw.
Close, but not quite.
Originally the GTX 4xx series cards was *supposed* to be released on the 32nm TSMC process. TSMC missed their mark and scrapped 32nm completely and said they would stay on 40nm, and then move directly to 28nm.
Because of this, GTX 4xx series was horribly optimized, and it created lots of waste heat, and could not clock very fast as a result. The base clockspeed was about 600MHz.
GTX 5xx series is the same Fermi core, but reworked correctly to be on 40nm process. This reduced operating voltage, and heat. That's why the base clockspeed of the EVGA 560ti 448 is 797MHz. Almost 200 full MHz more.
Do not expect those hydro copper versions to perform like your old 560ti 448. In fact, two 470's will probably perform worse than the 660 you have in anything that does not support SLI.