Now I got my two 4890 graphic cards. Now when I play a game and after a few moments of playing the computer shuts down, waits a couple of seconds and reboots. Never had this problem until I installed those two cards. I have an Apevia 750 watt power supply, or so it claims. These cards require a 6 pin and 8 pin. It comes with an adapter in case you don't have an eight pin, which I don't which uses up two four pins. Now that is explained these cards in total use 4 four pin adapters and 2 six pins. I'm thinking its a power supply that can't handle it. Just about all of the other connections are being used for one thing or another like fans, DVD, etc. I just got done reading the reviews of this power supply and others have had problems with it.
Epic fail. First I get a faulty 5870, then I can't get another one because they are out of stock, get 4890's and they're power hogs.