Hello, I recently built a computer for my uncle, with two graphics cards, and we are having troubles hooking up more than two monitors. The two graphics cards in questions are MSI R5770 Hawk Radeon HD 5770 .
This graphic card has outputs for 1x DVI, 1x HDMI, and 1x Display Port
2x ASUS VE247H (with VGA/DVI/HDMI outputs)
1x westinghouse monitor (with VGA output)
1x old Magnavox TV (with VGA output)
We have done research, and realize we may need to buy a powered DP to DVI adaptor, however our question is why can't we utilize the bottom graphics card without buying the display port adaptor?
Also, note, when he plugs in all the cables to the bottom card, NOTHING works. Nothing is displayed on the monitors when using the bottom graphics card alone, even when its just two monitors being used. To make sure the computer is actually seeing the second card, I had him run an experience index, and his graphics score is higher than my single XFX 5770.
Might be wondering why he wants all these monitors- its for a trading machine, so he can utilize all of them just fine
If he is not gaming, you can turn off crossfire and use both cards to power screens(3 each card with 1 on each being DP or active DP - DVI/HDMI/VGA). Or 4 DVI/HDMI with needed passive cables or adapters
First of all, when using AMD Cards in crossfire, only the top card will provide video signal. The second is just there to add "processing" power. To use a third monitor, you will need to purchase an active displayport adapter. The maximum number of monitors in crossfire is going to be 3. Now, I dont know due to never having tried to to un-crossfire and have both adapters provide display signal, that MAY be possible, but I dont know for sure. I currently use an hd5770 and a hd6770 in crossife and run 3 monitors, though only play games mostly on 1. I hope this helps
Without being at is computer, it will be hard for me to guide him on how to turn this off, and I don't use crossfire so I cant find the settings in my AMD Control Center. Will just disconnecting the crossfire cable, from the case, do the same thing?