Personally I have never liked the card and 2 of then even less so as I am of the single card is always better mind set.
My preferred option on upgrading that card would probably be to get a single 6870, which i believe would perform a little better and certainly more consistently than a pair of 5770's in crossfire.
Also consider that AMD have a habit of dropping full driver support for older cards like a hot rock when a new arch is released. With the new cards due out next year and the top end reported to use a different Arch its not going to be a big window for full support and game profiles.
yes i already have one 5770 and im gaming mostly at 1680x1050
however i have an eyefinity setup that i occasionally use, how would cf 5770's go at 3840x1024?
i play basically every game, however iv noticed with newer games my computer just cant handle it anymore on high. Witcher 2 specifically at 1680* maxed out will barely run. i also want to max out Red Orchestra 2, Fear 3. and of course the upcoming battlefield 3.
keep in mind i mean max out at 1680*. i understand with the eyefinity setup i would need alot more power, but i do want to play games decently with that as well.
might as well check the toms' charts, forums, & articles about 5770 cf. & might as well check the other sites.
well my self orientation about the 5770 CF (although i hvnt tried it in CF) is that the 5770 (single) is only a mid range yet decent card for gaming at 1680x1080 res that wont break your piggy bank. setting in on eye-finity mode plus maxing out games nowadays isnt the assigned job for 5770.
and here's the hint, sli or crossfire doesn't mean you're "doubling" your cards performance.
well, that's a really good budget to buy a new one that 5770 CF i think.
might consider gtx 560 as well. i read a lot that the 6870 is a terrible buy, & i dont know why, but i think its still a good choice. lets wait for the others to leave their comments.=D
both are good really, but the 560 is better at tesselation performance and has PhysX, both have about the same power requriments as well, going with either will be a good choice, though now u can get the 5870 for really cheap they have it for 199 on newegg last time i checked, so its whatever is cheaper, but if its only 10 i say go ahed with the 560, also it has big room for overclocking as well.
you may consider HD6950 also, its better than both of them. The people suggesting Physx have not mentioned the huge dip in frames if you'll use the Physx in GTX 560. So it's upto you what you want. you may want to look for sapphire brand, they are lot cheaper than the others.