I built this old pc in late 2009 and in the begaining it had (2) 9800gtx+ in SLI. Both cards started acting up almost a year ago after adding an 8800gs to the SLI setup for processing. Sence the 9800's went out i've been using just the one 8800gs and have been looking for (3) 480GTX's to replace them all. I just found (3) 480GTX for $200 wow.
But l've never noticed a big difference between any of the setups. The 8800gs is doing well for me now. Maybe by the end of the day the (3) 480's will make a difference. Anybody else experienced anything like this.