Sorry for the long post.
I want to connect three monitors to my PC, I've only been successful in getting two to work. Should the 7850 be able to support three? If so, what combination of cables/ports should I try.
Hardware - AMD Radeon 7850 - outputs DVI, HDMI and 2 x display ports. Also what I assume to be an expansion plate connected to the 7850 with one DVI port.
3 x monitors...
BenQ GL2460 with DVI and VGA ports
Acer S240HL with DVI, HDMI and VGA
Dell 1907FPt with DVI and VGA
The Acer is connected from its HDMI port to the HDMI on the 7850 and works fine (but see note 3)
The BenQ is connected from its DVI port to the DVI on the expansion plate and works fine. It also works when connected to the DVI port on the 7850
Before I bought the Acer, the Dell was my second monitor and it was connected using a VGA cable from its VGA port plugged in (via an adapter) to the DVI on the 7850. (Why it's connected like that I forget, probably the only cable/adapter combination I had available.). Windows 8.1 detects this as a 3rd monitor but If I try and extend the desktop to it it says something like 'Unable to save changes, choose a different config combination' when applying the settings.
Note 1 the Dell hasn't and doesn't display anything if it's connected into the expansion plate, even if it's the sole monitor.
Note 2 I'm referring to it as an expansion plate because i can't think what else it would be. Device manager only lists one graphics adapter, and shows both working displays being connected to the 7850
Note 3 I say works fine, however when Windows is asked to identify the monitors, it flashes up 1 on the Acer even though it thinks that 1 is the BenQ and vice versa, not that it seems to cause a problem for me but it might be relevant.
I want to connect three monitors to my PC, I've only been successful in getting two to work. Should the 7850 be able to support three? If so, what combination of cables/ports should I try.
Hardware - AMD Radeon 7850 - outputs DVI, HDMI and 2 x display ports. Also what I assume to be an expansion plate connected to the 7850 with one DVI port.
3 x monitors...
BenQ GL2460 with DVI and VGA ports
Acer S240HL with DVI, HDMI and VGA
Dell 1907FPt with DVI and VGA
The Acer is connected from its HDMI port to the HDMI on the 7850 and works fine (but see note 3)
The BenQ is connected from its DVI port to the DVI on the expansion plate and works fine. It also works when connected to the DVI port on the 7850
Before I bought the Acer, the Dell was my second monitor and it was connected using a VGA cable from its VGA port plugged in (via an adapter) to the DVI on the 7850. (Why it's connected like that I forget, probably the only cable/adapter combination I had available.). Windows 8.1 detects this as a 3rd monitor but If I try and extend the desktop to it it says something like 'Unable to save changes, choose a different config combination' when applying the settings.
Note 1 the Dell hasn't and doesn't display anything if it's connected into the expansion plate, even if it's the sole monitor.
Note 2 I'm referring to it as an expansion plate because i can't think what else it would be. Device manager only lists one graphics adapter, and shows both working displays being connected to the 7850
Note 3 I say works fine, however when Windows is asked to identify the monitors, it flashes up 1 on the Acer even though it thinks that 1 is the BenQ and vice versa, not that it seems to cause a problem for me but it might be relevant.
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