i'm about to upgrade my home office with an aditional 2 monitors. so i will have a total of 3. The problem is my GFX card only have 2 outputs, it is a ASUS GeForce GTX 275 896MB PhysX CUDA. Now i only want to run movies and webpages on the monitors so it is nothing demanding. So what should i do? buy an addition graphics card to my computer? Or can i in someway make 2 monitors use the same DVI port? Edit: Will i get any problems if i added another gfx card, say ASUS GeF GT210, not SLI'ed ofcause
Do you want to have the computer stretch the output to display on all 3 monitors at once (e.g. one desktop on 3 different monitors)? If so, you will probably need to get a new graphics card so that you have 3 DVI ports available. Your current one should be able to handle 3 monitors at once, so your additional card probably does not have to be very powerful (buy a cheapo one just for the port) because your powerful one can do most of the rendering. If you don't have another port on the motherboard for an additional graphics card then you will have to get a new motherboard.
If you want to display the same desktop 3 different times on each monitor, then I think you would be safe just to buy a DVI-splitter adapter/cable. I haven't attempted any of this, but after a bit of research I think this is what will be necessary for each scenario. Best of luck!