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Using dual display on integrated graphic (ASUS P8Z77-V LE)

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May 26, 2012 11:18:49 PM

Hello,
I would really like to know what is the maximum resolution you can get when you use two displays on integrated graphic ASUS P8Z77-V LE?

I'm planning to use one 30" and one 24"
I know that max 2560x1600 can only be achieved over DisplayPort but i was thinking to get an Active DisplayPort to DVI-D converter...

Do you think it would work to get 2560x1600 and 1900x1200 simultaneously on my displays?
May 26, 2012 11:21:37 PM

Not sure if that matters at all, but proc. is i5-3570K
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May 27, 2012 8:23:58 AM

Multiple displays are working (two at least, that i've tried), BUT i only get max 1280x800 on 30" via DVI. This should be 1900x1200 as stated in specifications.

The other (24") display is working at correct 1900x1200 (via HDMI)
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Anonymous
a b Ĉ ASUS
a b V Motherboard
May 27, 2012 8:54:43 AM

are you sure the 30" supports 1900x1200 or 1600x1050 or just 1280x800?
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May 27, 2012 9:22:38 AM

Anonymous said:
are you sure the 30" supports 1900x1200 or 1600x1050 or just 1280x800?


100% sure. I've been using it for a year. It supports 2560x1600.

Funny thing is i just tried to connect two 24" monitors and it's working great (both 1900x1200).

I think i will go ahead and order Active DisplayPort to DVI-D converter which supports resolutions up to 2560x1600...

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Anonymous
a b Ĉ ASUS
a b V Motherboard
May 27, 2012 9:35:11 AM

looking at the mobo page:
http://www.asus.com/Motherboards/Intel_Socket_1155/P8Z7...
Integrated Graphics Processor
Multi-VGA output support : HDMI/DVI/RGB/DisplayPort ports
- Supports HDMI with max. resolution 1920 x 1200 @ 60 Hz
- Supports DVI with max. resolution 1920 x 1200 @ 60 Hz
- Supports RGB with max. resolution 2048 x 1536 @ 75 Hz
- Supports DisplayPort with max. resolution 2560 x 1600 @ 60 Hz
Maximum shared memory of 1696 MB

does the 30" refresh rate need adjusting or do you need to adjust the shared memory in the BIOS?

i'd hate to see you spend money on an adapter and still get a low resolution for whatever reason.
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May 27, 2012 1:06:22 PM

Anonymous said:

Maximum shared memory of 1696 MB

does the 30" refresh rate need adjusting or do you need to adjust the shared memory in the BIOS?

i'd hate to see you spend money on an adapter and still get a low resolution for whatever reason.


30" refresh rate is only working on 60Hz, so no adjustment possible.

I also tried changing shared memory to max (from auto) but no change...

Funny that it works fine on two 24" @ 1900x1200, but if i use 30" i can only get 1280x800 as max on 30" and 1900x1200 on 24"

I also tested this and it works:
30" on 8600GT @2560x1600
24" on integrated @ 1900x1200 (HDMI)
and even additional (which i connected just for testing purpose and i wont be using it)
24" on integrated @1900x1200 (DVI or VGA)

but the thing is i would really like to get rid of 8600GT and use just integrated graphics (no need for 3D accel) so that's why i wanted to buy Dell-BizLink-DisplayPort-Adapter-Powered to use DisplayPort on MoBo.

But since i only get 1280x800 from DVI to my 30" i'm kinda afraid it might not work even with DisplayPort ... :( 

Any ideas/solutions greatly appreciated..


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Anonymous
a b Ĉ ASUS
a b V Motherboard
May 27, 2012 1:26:58 PM

it is most desirable to get the 30" at least the same resolution as the 24" and i am at a loss as to what is flonky. as far as any work around, i would suggest using the 8600gt, getting the DP/DVI adapter may be for naught. and that 8600 is not causing any stress on the set up, just using a pci-e slot. you could probably just toss it in the x4 slot . . .
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May 27, 2012 3:15:45 PM

Quote:
it is most desirable to get the 30" at least the same resolution as the 24" and i am at a loss as to what is flonky. as far as any work around, i would suggest using the 8600gt, getting the DP/DVI adapter may be for naught. and that 8600 is not causing any stress on the set up, just using a pci-e slot. you could probably just toss it in the x4 slot . . .


I wrote an email to manufacturer, maybe they can have a reasonable explanation why such resolution plus i asked them if i can expect to work with DP/DVI ...

Until i find a solution i will probably be using 8600GT ..

Tnx for your effort.

A.
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May 28, 2012 3:04:19 PM

Seems like the main problem with 30" is that DVI on MoBo is not Dual, so that's why such low resolution on this monitor (this was a reply from manufacturer). However DP should easily work with 2560x1600 so i decided to order an active DP/DVI-D adapter. Will let you know about the results..
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Anonymous
a b Ĉ ASUS
a b V Motherboard
May 28, 2012 8:05:24 PM

ah.
yes, please let me know.
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Anonymous
a b Ĉ ASUS
a b V Motherboard
June 1, 2012 2:32:10 PM

nice. glad it worked out, good for you. :) 
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January 17, 2013 4:54:19 PM

I have the same problem with just 1 monitor using DVI input. The monitor can go up to 2560x1440 but the selection is maxed out at 1680
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October 15, 2013 4:44:01 PM

Anonymous said:
looking at the mobo page:
http://www.asus.com/Motherboards/Intel_Socket_1155/P8Z7...
Integrated Graphics Processor
Multi-VGA output support : HDMI/DVI/RGB/DisplayPort ports
- Supports HDMI with max. resolution 1920 x 1200 @ 60 Hz
- Supports DVI with max. resolution 1920 x 1200 @ 60 Hz
- Supports RGB with max. resolution 2048 x 1536 @ 75 Hz
- Supports DisplayPort with max. resolution 2560 x 1600 @ 60 Hz


This is wrong statement to answer what is max resolution of HDMI.

DVI cables, depending on whether or not they are dual-linked, can display 1920x1200 (16:10) single; and up to 6400x4800 (4:3) 7680x4320 (16:9) dual-linked (although depending on your graphics card, the resolution cap may be lower). See wikipedia to detect wich DVI connector you have : http://upload.wikimedia.org/wikipedia/commons/thumb/f/f...

However, if you are referring to specific Asus motherboard with onboard or pcie graphic card then resolution depends on how the video card is made (I don't know all limiting factors, but memory, DACs for VGA, bandwidth, clock, can influence if all outputs can use max bandwidth of the DVI cable).

Note that new computers with very high resolutions still use DVI conntector. HDMI is somewhat different, but you must be careful with version of HDMI 1.2 or 1.3 or 1.4 or whatever there is now. VGA cable can try to transfer anything, usually graphic card puts limitation (it's analong signal after all).

DisplayPort 1.2 enables full 4K x 2K resolution, 3D stereo beyond full HD, and more, which is much more than what you described.
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