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Help and Support Forums => Technical Support => Topic started by: Brenjen on July 15, 2006, 01:24:29 PM

Title: Vertical sync
Post by: Brenjen on July 15, 2006, 01:24:29 PM

I was discussing on 200 how incredible my new 7950GX2 video card is performing, I mentioned it was delivering 300fps more or less when I look straight up.

 Zazen began to give advice about turning on the V-sync, I agreed, informing him I was currently testing what the card can do & had only turned on 4X AA so far (I hate jagged edges)

 After our ch.200 chat, I decided to go in & adjust on the card settings, here's the odd part & the reason for my post; vertical sync is on & has been on.

 I'm getting frame rates as many as 200fps over my monitors max refresh rate of 100MHZ with V-sync turned on, how can this be?

 My vid. card is a eVGA 7950GX2, Asus A8N SLI mobo, Windows XP home

 Anyone got a clue why/how this is happening?

Title: Vertical sync
Post by: StarOfAfrica2 on July 15, 2006, 02:20:09 PM

My guesses would be either

the Monitor doesnt talk to Windows properly so it isnt getting the right upper limit for your refresh;
the Nvidia drivers are causing something to go wonky there with the vsync;
or it has something to do with the SLI.


First time I've heard of that one.  As long as there isnt any tearing or artifacts showing up though, I wouldnt worry about it.  Out of the 3 I'd suspect the Nvidia drivers first, they've been having some strange things happen trying to get the most out of these newer cards.

Title: Vertical sync
Post by: Brenjen on July 15, 2006, 03:18:37 PM

The driver is what I was suspecting, my monitor was locking in with the 7900GTX just fine. It's definetly strange.

Title: Vertical sync
Post by: Skuzzy on July 16, 2006, 06:45:32 AM

There some severe bugs in the 91.xx series of drivers.  One set will crash various programs.  Another will use up memory at a horrific rate.

I am still researching to find which ones actually are stable.

Title: Vertical sync
Post by: Brenjen on July 16, 2006, 10:05:05 PM

All my programs run fine & my memory usage seems in line. Keep us posted as to what you find out about the stability.

Title: Vertical sync
Post by: Chalenge on July 17, 2006, 09:24:37 PM

91.31 is supposed to be the first that supports the 7950 GX2.

Title: Vertical sync
Post by: Brenjen on July 24, 2006, 12:50:03 PM

91.31 is what I'm using. Some earlier drivers work though.