Why vertical sync makes (2x refresh rate) fps of monitor in crossfire?

[alexr9]

Witcher 2 with r9 280x is good with vertical sync, because the fps are between 57-63 fps so is good for the monitor(60hz), but r9 280x in crossfire, always try to get 120 fps.
Why this is happening?

 

[azzazel_99]

Um with vsync on in the games options I'd think it would still keep it at 60hz or w/e your display is.

 

[alexr9]

Um with vsync on in the games options I'd think it would still keep it at 60hz or w/e your display is.

It makes 120 fps with v sync activated with crossfire and 60fps with single gpu mode, like should it be too in crossfire mode

 

[azzazel_99]

Hmmmmm thats odd. Is there a way in msi afterburner or something to set a limit fps? Evga precision x has that option for nvidia cards which is why I ask.

 

[alexr9]

Hmmmmm thats odd. Is there a way in msi afterburner or something to set a limit fps? Evga precision x has that option for nvidia cards which is why I ask.

I do not know, this is one good solution , but i have no idea for doing it. I have guru software by gigabyte and amd catalyst 13.11 beta.
Thank you

 

[iam2thecrowe]

if vsync is on, and your monitor is 60hz, you should be getting 60fps max. check your vsync settings in AMD control panel and in the game settings.

 

[J B]

Witcher 2 with r9 280x is good with vertical sync, because the fps are between 57-63 fps so is good for the monitor(60hz), but r9 280x in crossfire, always try to get 120 fps.
Why this is happening?

Um with vsync on in the games options I'd think it would still keep it at 60hz or w/e your display is.

It makes 120 fps with v sync activated with crossfire and 60fps with single gpu mode, like should it be too in crossfire mode

I have the exact same problem with crossfire 7870's, its driving me crazy and I am unable to find a solution.
My monitor is 60hz but vsync in crossfire is stuck at 120Hz in every game, it is 60hz when crossfire is disabled?
Did you find a solution to this?

I am running 13.11 beta 9.5, the problem is there in 9.4 also, I will roll back drivers and report back with my findings.

Update: I rolled back to catalyst 13.10 beta 2 and the problem is gone and I am now locked at 60Hz with crossfire and vsync on, so the problem is with catalyst 13.11 beta 9.4 and 13.11 beta 9.5.

Hope this helps.