Lower resolution than expected

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vivski

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My setup is :-Windows 8.1, 64 bit;
Asus RAIDR Express PCIe SSD;
Asus GT630-SL-2GD3-L GPU;
Asus SABERTOOTH Z97 MARK 1 Motherboard, BIOS version 0602;
Kingston Technology XMP Beast Series 32GB 2400MHz DDR3 Memory.
My monitors are a iiyama Prolite XB2776QS and a Dell u2412m.

I originally had these monitors connected to my old computer and the iiyama was set to a screen resolution of 2560 x 1440, and the Dell to 1920 x 1200.

The GPU has three ports – DVI, HDMI and VGA, but the GPU on my previous computer had two DVI ports which enabled me to achieve the resolutions stated previously.

I now have to connect the Dell to the DVI port and the iiyama to the HDMI port on my GPU. While I can set the Dell to the same resolution as previously, the maximum resolution I can achieve on the iiyama is only 1920 x 1080 via the HDMI port.

According to the Asus website the HDMI port will allow a maximum resolution of 4096 x 2160. I have all of the latest drivers installed, except that I did not install the 3-D drivers as I do not play games.

Is there any way I can increase the resolution achieved by the HDMI port to get it back to 2560 x 1440?

Viv
 
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vivski

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Thanks for the quick response. Is 1440p the spec for the iiyama and 1200p for the Dell? I am not sure what this means but is this a problem? I did manage to run both of these monitors from a Zotac Geforce GT 610 Zone Edition GPU at the resolutions I am looking for, but it does not give me these resolutions on my new motherboard, for some reasons.

Looking at the specs on the Asus website it is supposed to have an engine clock of 902MHz, CUDA core 384, and 2048MB of memory, which makes it a Kepler version, I think.

If you can enlighten me further I will be very grateful.

Viv
 
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vivski

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Thanks i7Baby,

I have looked at the Asus GT640 2GD3 which has the following specs, according to Asus, and is supposed to support up to 4 monitors :-

Graphics Engine
NVIDIA GeForce GT 640
Bus Standard
PCI Express 3.0
Video Memory
DDR3 2GB
Engine Clock
901 MHz
Memory Clock
1782 MHz ( DDR3 )
Memory Interface
128-bit
Resolution
D-Sub Max Resolution : 2048x1536
DVI Max Resolution : 2560x1600
Interface
D-Sub Output : Yes x 1
DVI Output : Yes x 2 (DVI-D)
HDMI Output : Yes x 1
HDCP Support : Yes
Power Consumption
up to 75Wno additional PCIe power required
Software
ASUS Driver& Utilities
GPU Tweak
ASUS Features
Fan Sink
Super Alloy Power
Dimensions
8.27 " x 4.92 " Inch
Note
● No UEFI support.
* No native UEFI BIOS support, for UEFI BIOS, please download from ASUS technique support site. (The update tool only for ASUS MB.)

It is on the Asus Qualified Vendor List as working with my motherboard, but I am not sure what I should be looking for to determine if it can run my monitors. Can you help?

Viv
 
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hunter315

hunter315

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The more recent versions of HDMI will support 2560x1600, but if you are trying to use an HDMI 1.3 cable or older its not going to work. Swap the high resolution monitor to the DVI-D which i assume is dual link, and move the dell over to HDMI, if the dell doesn't have an HDMI port you can pick up HDMI-DVI cables for like $10
 
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vivski

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Thanks hunter315,

I decided to uninstall the NVidia drivers and do a clean install, but everything I have tried just results in a black screen on the iiyama when it is connected to the DVI port, even if it is the only monitor plugged into the computer.

I can get 2560 by 1600 resolution if I plug it into the DisplayPort on the motherboard and plug the Dell into the DVI port on the GPU, but this means that every time I switch the monitors off all programs are displayed on the iiyama when I switch them on again, and that will cause a problem when I am trying to record videos in a week's time.

Viv
 
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vivski

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i7Baby,

The card I am using is a GT630, which does not do what I want. I posted the specs for the GT640 to ask if they are likely to make the difference I need in order to run both of my monitors at the highest resolution they are capable of. I should have made it clear that that was what I was asking.

Viv
 
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vivski

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Thanks i7Babay,

But this raises the question of why I could plug my two monitors into the 2 DVI ports on my Zotac Geforce GT610 Zone Edition with only 1 GB of memory and lower specs than my current graphics card on my non-UEFI Windows 7 computer, and get them to display at their native resolutions. Unfortunately when I plug this card into my current set up and install the latest drivers I cannot achieve the same resolution on my iiyama.

I am also baffled as to why my iiyama shows only a black screen when plugged into the DVI port of my Asus GPU.

Viv
 
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vivski

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The Zotac has two DVI-I ports, but the cables I am using are DVI-D, as is the port on the Asus GT630, and my Dell is plugged into the DVI-D port on the Asus, and works, but when I plug the iiyama into the same port it does not work. However both monitors ran at native resolutions using the same cables plugged into the Zotac on my Windows 7 computer. Maybe it is something to do with changing to Windows 8.1 and UEFI, although I cannot see why.

Viv
 
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