XFX HD-487A-ZWFC 4870 1GB + VisionTek 900250 4870x2 2GBġ) Both cards work installed alone in either PCIex16 slot.Ģ) Both cards work installed together w/ CrossfireX disabled.Ĥ) Swapped crossfire cable w/ another and tried both orientations.ĥ) Removed all non-vital PCI cards and all but one harddrive.Ħ) Removed ATI HDMI dongle, and replaced cable with a DVI->HDMI to HDTV.ġ) Uninstalled CCC, rebooted, ran Driver Sweeper, Rebooted, ran CCleaner, installed latest CCC from ATI site, rebooted, automatically prompted to enable crossfireX on login. "A portion or entirety of the screen shakes left and right horizontally rapidly when CrossfireX is enabled. Triple edit: Well, I sent a ticket to XFX:
If I restore back to factory defaults, I get my horizontal shaking, except in stuff like Dragon Age its the whole screen not just a third of the screen. If I have GPU-Z running in the background and Dragon Age in the foreground, in CCC and in GPU-Z, the current clock for the 4870x2 is still low and not showing activity and the temps are low. *facepalm*ĭouble-edit: Crap, I think the 4870x2 isn't doing anything at all now. What the hell does this mean?!?Įdit: Its probably just because AA is usually disabled, and I'm forcing it now to max, but my 3DMark06 score is now way down to 15376, making me think that perhaps crossfirex is broken with this setting, hence the "fix". If AA is anything else, BOX x8 or edge detect or whatever, the problem persists. If AA is set to force BOX x16, PROBLEM SOLVED! Played with the settings and WTF is with this: I finally got around to playing with settings, and decided to max out EVERYTHING in CCC, and voila, it works, THE JITTER IS GONE! To preface, I removed my sound card, esata PCIe card, unplugged all harddrives and optical drives save for OS, swapped PCIe power plugs around, all to no avail and put it back.