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View Full Version : Considering SLI...vsync/tearing issues?


Chaos_Being
11-20-08, 10:11 AM
My motherboard seems to be on its way out, and I have been considering picking up an SLI board, and another gtx 280 and trying out SLI (along with a new PSU.) I've never really given SLI that much attention before, so I did some research, and found some possible incompatibilities with SLI and vsync/triple buffering. However, most of these reports were years old, and using old drivers/old tech.

I am curious if the 200 series card, with new drivers, still run into these issues with SLI. I would love to have the extra performance, but I am concerned about running into a tearing problem. I run all of my games with vsync on, because tearing bothers me that much (I force triple buffering through the nvidia control panel too, although I have recently learned after years of doing so, that it does not apply to D3D games :p ) Could I potentially have problems with tearing/inability to apply vsync while using SLI?

I game almost exclusively in 1920x1200 @ 85hz on my 24" Trinitron.

Thank you for your comments, and please, no comments about how SLI isn't "worth" it, I just want to focus on the question at hand.

jason4207
11-20-08, 01:59 PM
I think you can enable triple-buffering and have it work in D3D games if you also use the D3D overrider program that comes w/ RivaTuner. I had good results using it on BioShock w/ my 8800GTS-512.

I'm also a vsync fanatic! Having 100fps means nothing if the screen is tearing. Tearing really removes me from the immersion of the experience IMO.

AngelicPenguin
11-20-08, 06:16 PM
I can't stand tearing either. The only game I leave vsync off is in Crysis where I saw a noticeable frame drop when enabling vsync even with triple buffering enabled in the ini file. I'm guessing the triple buffering must have used too much extra memory (?)

I'm not using SLI, but with my 4870x2 I've noticed no problems in other games. I'm assuming the crossfire on one board would show the same sort of problems with two video cards.

Chaos_Being
11-21-08, 07:50 AM
Hmm...I had read that triple buffering wouldn't work in SLI, but perhaps the overrider works? I'm pretty sure that crossfire has some of the same drawbacks as SLI, so if vsync works ok on it, perhaps it will on SLI as well.

Thanks for the replies so far :)