Multi 120hz monitors

ewarwoowar

ewarwoowar

ewarwoowar

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Joined
8 Jan 2011
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616
Since adding another 120hz monitor I have been gettinga few problems.
The monitors I have are LG w2363Ds, 2 of them to be exact.

They're both on 120hz and when I am moving stuff from one to another sometimes the windows being moved about get very jittery and no where near as smooth as 120hz should be giving out. They would jump about when moving.


I have been getting these errors like crazy:
Untitled-12.png


My computer probably is due a fresh install and I should have done that before consulting OcUK forums but it'd be nice to see if anyone else has come accross this.

This is with a single gtx 580

*edit*
Oh and I would get FPS drops on the iTunes visulatiser (ctrl+T while on itunes) this only seems to happen on the extended monitor. I would get a solid 59fps then all of a sudden it'll go down to 30-40s for like 5 seconds
 
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Perhaps the clocks on your GPU are too low in power saving mode to cope with two 120Hz displays.

The card is effectively doing 4 times the work of a single 60Hz display.
 
You are absolutely on to something!

using afterburner and setting core clock to 801mhz and applying and it ramps the clocks up to that for about 10 seconds and everythings fine. Then puts back down to idle closka nd it all happens :( I've tried removing adaptive power management and it just won't stay up high!

I owe you a beer Surveyor, helping me out twice now :D
 
No problem.

You just need to work out now how to increase the 2D clocks.

Not having an Nvidia card I don't really know how they work in that respect.

I don't know if you can set different profiles using the Nvidia software or afterburner.

Are you using the latest drivers?

I've taken the liberty of getting a beer for myself. Just a small one as the problem is only half sorted.

 
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Popped a question in the nvidia forum.

A video showed that forcing it on rivatuner works but they eventually drop down to 2d clocks. Though during the 3d clock bursts it all seems perfectly fine. So fingers crossed Nvidia tell me how :D
 
I hope they sort this out.

The clocks must be dropping pretty low.

Doing a bit of Googling some cards seem to drop as low as 50MHz and others 405MHz.

I would think you need something between those speeds.
 
ewarwoowar said:
Idle clocks are as followed:

405 core clock
810 shader clock
324 memory clock

3d clocks are:

800
1600
2048
Click to expand...

You'd think those would be high enough.

The memory clock is quad pumped so 1296MHz effective or is 324MHz the quad pumped figure?

I'm slightly confused as the 3D memory speed should be around 4100MHz (1025x4).
 
Check the multi adaptor/display setting in the nVidia control panel, try multi display acceleration and single mode.
 
omar1 said:
wow you have a GTX 580. and your having issues?

I think 3d is being pushed far to quickly
Click to expand...

I think he mistook 3d clocks for actual stereoscopic 3d :p

Had someone reply on the forum saying you can change 2d clocks in afterburner but I can't find any place how to.
Either way I think the 2d clocks should be enough to power 2 120hz monitors really :o
 
Still can't get 2d clocks perm :(

Errors only happened twice today. Both times when not in game I think. As obviously in game I have 3d clocks so no problems in windows manager or anything.
 
in order to change the 2d clocks you'll need the ati equiverlent to ati tool or...

download a 580gtx bois get a bios tool and and change the 2d clocks high and flas your card

as i know with with all nvida card they have 3 settings ....

low level 2d clocks which run at 50/100/135 this is for surfing the web on one screen

low level 3d clocks which run at 405/810/324 this is for when you watch films or run multi screens

the full 3d clocks are what ever the card is overclocked to and is used in heavy 3d apps

the settings you will need to change are the second lot i hope this helps..
 
Thanks for the info, mucho appreciated :)

Been reading up and infact I am getting the low 3d clocks. Shame that low 3d clocks aren't strong enough for 2x 120hz :/ still waiting on an nvidia rep/mod to help out
 
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