Author Topic: Vertical sync  (Read 542 times)

Offline Brenjen

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Vertical sync
« 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?

Offline StarOfAfrica2

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Vertical sync
« Reply #1 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.

Offline Brenjen

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Vertical sync
« Reply #2 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.

Offline Skuzzy

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Vertical sync
« Reply #3 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.
Roy "Skuzzy" Neese
support@hitechcreations.com

Offline Brenjen

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Vertical sync
« Reply #4 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.

Offline Chalenge

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Vertical sync
« Reply #5 on: July 17, 2006, 09:24:37 PM »
91.31 is supposed to be the first that supports the 7950 GX2.
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Offline Brenjen

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Vertical sync
« Reply #6 on: July 24, 2006, 12:50:03 PM »
91.31 is what I'm using. Some earlier drivers work though.