Which graphics card for the??

[foothead]

you can tri and quad fire if you don't end up with crappy custom pcb models that only have one crossfire plug. You just need a good mobo to support it.

It doesn't scale too well though.

 

[sina131]

Get a 5850, flash it to 5870 BIOS, overclock to ~1GHz core 1400 memory, and you will be set.

...Sounds like alot of work... Why wouldnt the dual 5770 be better?

 

[foothead]

No, keep to single card if at all possible.

It takes maybe 2 hours to accomplish everything I said, and the 5850 will destroy a stock 5870.

Keep this in mind too. A 5850 @ 1000/1400 is only 5% better than a 5870 @ 1000/1400.
You flash to 5870 BIOS to achieve higher overclocks without needing to slipstream the BIOS. You will be able to do it in afterburner.

5850 @ 1000/1400 should beat dual 5770 @1000/1400 too. Cheaper, faster, less power consumption, better scaling when you upgrade, less heat, and no microstuuter or non-supporting games. I don't see any reason to go with 5770 CF in this case.