Yes, for SLI and the LGA 775 socket you'll have to use an Nvidia Chipset.
I'm a Nvidia supporter, but with your setup listed you'd be better off with a ATI 4890. You could add a second card later as that Gigabyte board does support Crossfire. But it's your hard earned money to spend
I'm a Nvidia supporter, but with your setup listed you'd be better off with a ATI 4890. You could add a second card later as that Gigabyte board does support Crossfire. But it's your hard earned money to spend