Hi I have a evga 9800gx2 atm and I was wondering if I got another one for quad sli would the performance gain be good or would there be some bad stuttering? I saw some reviews on youtube that should 9800GX2 quad sli being very glitchy and have lots of stutters, was this just something that happened to that person or is that the case with all of them? I have a QX6850 quad core @ 3.6ghz, 4gb ddr3 1600, evga 790i, and an evga 9800gx2, Oh and my monitor is 1920x1080. Thanks!