How to dual monitor with GeForce GTX 750 Ti 2GB

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GreenAce92

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I recently bought this card here, assuming it works with my Optiplex 790 SFF, I'm wondering how to go about a dual monitor setup. Primarily for the dual monitor setup I would not be gaming, mostly for coding/web design. I guess for gaming I would unplug one monitor.

Anyway, I bought an HDMI to VGA port thinking that a display port was HDMI but I found out after buying the adapter that it was a different port... so I have that adapter... and this card has both VGA and DVI... although I realize that I will have to do something wit the VGA more than likely removing it due to the SFF / low profile.

I'm thinking that it has to do with the dual VGI thing, I think I read somewhere... so I would look for a DVI to dual vga adapter? The monitors that I have are VGA only.

Thanks for any help.

My computer has an i7-2600 and should have 16gb of RAM and then this video card. Alternatively I have the AMD Radeon 6540 (numbers may be wrong, but the 1GB version).

 
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GreenAce92

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Why?

Do I need two video cards?

The specs say this is dual monitor capable. What is the reason that I can't?

Oh... multi-monitor support doesn't mean multiple screens... instead different monitors like CRT/Flat panel... hahaha alright I misread that
 
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GreenAce92

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Holy crap apparently I can have three... but maybe not on SFF?

http://www.dell.com/support/article/us/en/19/SLN133315/en

How to use three (3) monitors on the OptiPlex 790 and 990

You will need the following:
Windows 7 x32/x64
A dedicated (discrete) graphics video card installed in the 1st PCIe x16 slot
The Intel driver for the onboard video chipset needs to be installed as well. This may require removal of the discrete graphics card to allow proper detection/installation of the Intel driver. The driver for the discrete graphics card does not need to need to be uninstalled.
The multi-monitor function should be enabled in BIOS

How to enable the multi-monitor option in BIOS

Enter the BIOS by tapping on F2as soon as the system is turned on
Look for Video
Look for Multi-Display and enable it (this option is disabled by default)
 
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genz

genz

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It's not that. At all. It's the fact that you have no second analog framebuffer. You have two VGA displays, which need analog signal. You have one Analog input on your card. HDMI has no standard ability to output analog, and nor do your two DVI-D ports. This means your GPU will use the 1 analog framebuffer it has for either the VGA port OR analog over HDMI, but simply cannot do both at once.

You need an "Active adapter" that will convert HDMI digital output to analog inside it to supplement your current framebuffer with another. This is usually an actual box with a VGA socket on one end and a long cable at the other with a HDMI socket at the end, as it takes a lot more space and will get hot.

You currently have a passive adapter that doesn't actually have an conversion electronics inside and more or less passes on the signal and leaves it to your GPU to work out that you have an adapter.

Alternatively you need to use DVI-D, HDMI or another digital connection to use a second and third display. If your screen doesn't have one get the adapter, if it does swap the cable. Remember the end of the cable that goes into your screen is what is really being transmitted. Modern GPUs can switch types of signal based on the needs of the screen. Screens will always only work with an analog signal through an analog port and vice versa, even if they have multiple sockets on the back for both.

Necro due to this still getting lots of google hits.

 
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