I went with the GPU for a few reasons , mainly it had a life-time warranty, and could be cross-fired at a later date. I figured by the time i needed to upgrade it would drop alot in price. The pc still plays most games at very high settings, but I was playing saints row 3 the other day and it was like a slide show on max settings. Looking around for some reason the card hasnt dropped any in price, and there arent alot of places selling it. So i started looking at different cards and am kinda confused. I thought the higher the number the better the card, but it doesnt seem to be like that anymore. so basicly I'm wondering if of these below $200 cards are better than the 5870 (by alot , since most games are fine, just dont want stuttering when max-payne 3 comes out), or if there are any cheap cards i could cross fire with the 5870 I have already.
I can not suggest to you something "special" , The only thing that i know, is that you can not cross fire different types of cards.In my opinion I f you want to use the cross fire option you should buy the same card again
Depending where you live you could get a 560 ti under $200.00 from newegg.com. But the above post is right you will have to use ebay to get that card. I have one question when did it start to lag?
If it just started it could be a heat issue. When was the last time you took a can of air to the inside or your rig and blew out all the dust? I know I said one question. Overheating will cause lag in anygame.
If you are not monitoring your temps I can link you to a few programs that will help you see your temps but I will do it the next time and you let us know you need it. But for now good luck.