bartarton :
That old card does not support DX12, you may as well sell it and get a better card. and save up for an intel i5 and motherboard.
Now if I buy two cards like the GTX 960 I can crossfire them? Or am I better off buying one more expensive card? Also my computer won't start not unless I restart it a few times so I'm pretty sure my PSU is shot looking for a new one [/quotemsg]
Ok, that's not good about having to restart the PC a few times to get it working. Start saving up for a new PC, cos although it could be just PSU it may be the motherboard.
As for a new GPU, get one good one with a 3 year warranty rather than 2. Some games don't work with SLI/Xfire, some do work but you get other problems like micro stutter. I had 2 cards similar to yours, they were HD5870's in Xfire and some games were great, but ARMA 2 had no end of issues including microstutter and after a full year there was no fix so i switched to Nvidia. Some game would not even play such as Dirt 3, I had to disable one of the card everytime I wanted to play. Plus you end up using way more more power.