I have two computer monitors, and I wanted to hook up my TV to my pc as well. I have my TV plugged into my pc (VGA), and I have a 2 Port VGA Video Splitter from StarTech for my two monitors.
All three are working, but two are duplicates. I guess it is a problem with my VGA Splitter. However if I just have two monitors plugged into the splitter, they work fine and I have two screens. So I am slightly confused. In devices it only detects Second Monitor, no third or anything ^^
Any thoughts? Anyone else running three monitors without problems?
Best Answer
It depends on your graphics card.
Windows has supported more than two monitors since Windows 98. You just needed the hardware support to enable this.
If you have an AMD card, you need an Eyefinity-enabled card, that has DVI and DisplayPort/mini-DisplayPort outputs. Cards of the Radeon HD 5000 generation and later will work. You'll have to have at least one of the monitors plugged into the mini-DisplayPort/DisplayPort output to a DisplayPort-enabled monitor. Or, if you only have DVI inputs, you'll need an active (mini) DisplayPort to DVI adapter.
If you have nVidia, you need two cards in SLI to drive three monitors using their 3D Vision technology.
You can also do this with multiple graphics cards installed. This is how you did it back in the Windows 98 days. However, in this configuration, you won't be able to game or use hardware video processing on using all of them. But for basic work, it works fine.