Any advantage to using LCD drivers

Flanno · 28 Apr 2006 at 18:29

I noticed when I got my VX922 that I could display windows at 1280@75hz and more importantly play games at 75hz. For me this means I don't need vsync in more demanding games. As soon as I installed the Viewsonic drivers, only 60hz is available by default, and games like Star Wars : EAW only let me display 1280@60hz whereas before I could pull of 75hz. I wonder why Viewsonic have done this as the tech doc's say the LCD supports 75hz. Anyway I uninstalled the drivers. I still use 60hz in windows and 75hz in games. Am I missing anything by not having the drivers installed ?

Oh..one more thing...everytime my system goes into suspend, when it comes back the monitor is sort of buzzing and any windows I open flicker a bit. Turning the screen on and off sorts it. I wonder what is causing this ? It happens with the drivers installed. HAve to figure out if this is causing it, or maybe it's my power management profile, which knocks off the screen after 30minutes, the HD after an hour, and then goes into sleep after 2 hours.

Booner! · 28 Apr 2006 at 18:34

well the resolution of 1280 x 1024 is actually spuppose to run at 60Hz so when you say it can run at 75hz, you are half way there, it can run in 75hz at smaller resolutions. i would ideally like to run my viewsonic 924 at 75hz but i think it can damage the screen at 1280x1024 :confused:

Baddass · 28 Apr 2006 at 18:40

the maximum refresh rate of these TFT's is 75Hz and they are perfectly fine to run them at this if you want to. However, the "optimum" and "recommended" refresh rate is 60Hz due to the way they function and it is better to run them at this if you can. To the OP, one thing to consider if you're running the VX922 at 75Hz, the overdrive control can be adversely effected at this refresh rate. Might be worth you having a read of this article as well. It might give you a hit in pixel responsiveness at 75Hz though. This might not be an issue anyway, if you don;t see any pixel latency issues (blurring / ghosting) then don't worry about it as FPS will be higher at 75Hz. Just something to bare in mind, and another reason to use the TFT at 60Hz if you can

Flanno · 28 Apr 2006 at 18:40

The manual says 60hz is recommended (gives best quality I think), but the specs say 75hz capable so I don't see how you could damage the monitor.

Flanno · 28 Apr 2006 at 18:42

Thanks for the info Badass

<edit> The problem I have with 60hz is a lot of games go over 60fps and you get tearing, and vsync drops the framerate to 30fps to prevent this tearing when the game goes over 60fps. The only thing that I have found which helps is using tripple buffereing. On some games the framerate with vsync on only drops to 45fps. This is why I would much prefer to use 75hz as I would not bother with vsync then and chances of tearing are so much reduced </edit>

Flanno · 28 Apr 2006 at 20:25

Turns out it the pants Viewsonic drivers causing the buzzing when coming back from sleep mode. Not happening with the windows ones. Now to do some 75hz gaming to see if I end up with ghosting.