How to tell if a graphics card supports two monitors?
Solution 1:
Google is your friend.
http://www.geforce.com/hardware/desktop-gpus/geforce-gt-610/specifications
This shows "MultiMonitor: Yes"
Don't let "Dual-link" confuse you -- that just means the connection supports higher bandwidth, it doesn't have to do with multiple displays. Be aware of the different DVI connections though, you may need a specific type to make higher resolutions possible.
http://www.datapro.net/techinfo/dvi_info.html