2 VGA cards that "work" together simply said, but since you don’t use more then 2 screens and don’t play games I would leave the SLI what it is. SLI is a standard made by nVidia by the way, if it was ATI made his own Crossfire technology and HP uses there VooDoo chip to combine the 2 technologies. Lookhere, at this moment, d.d. 10 Sep. 2007, it’s 200 US$. With an update of the BIOS, all will be fine, even Native Command Queuing (NCQ) for hard disks will work. It was NOT ASUS fault, but they wrote something on there site to warn customers who could have problems. ASUS just disabled some options to avoid these problems until iNTEL cleared things up. I would check out the GIGABYTE GA-P35-DS3L and the Intel Core 2 Quad Q6600 together for 380 US$ (+ tax) + shipping .