Been out of the loop for quite some time, nice to see this amazing forum is strong and running! I have the Dell XPS 630i, and it has a 650i SLI chipset/motherboard. However, it looks like it has been modified by Dell. This is from the user forum: - PCI Express x16 (SLOT1 and SLOT4) = connector size 164 pins, connector data width maximum 8 PCI Express lanes - PCI Express x8 (SLOT3) = connector size 98 pins, connector data width maximum 1 PCI Express lane - PCI Express x1 (SLOT3) = connector size 36 pins, connector data width maximum 1 PCI Express lane Am I understanding this right? I have 1-PCI-16X, and the other PCI-E is 8x? Assuming that is right, is it even worth going for SLI? I have one 8800GT 512gb at the moment and am looking at upgrade options. I am running a 22" wide screen and like to run at max resolution on high game settings. Mostly WoW, and with the current config I drop to less than 20fps when there is a lot going on. Considering my motherboard limitations, what is the best upgrade option in the $200 range?