Hello,
i might be wrong, but i think that if you use the splitter cable you will see the same image on both screens.
If you wanted to display different things on your TV than on the other monitor, then i think you would need a splitter box, which provides "the equivalent" of one graphic card for each screen. In fact, i think it "lies" to the computer and tells it that these two screens are just one big screen.
* * *
Myself, i'm going for 3 monitors too, but i'm just building my computer now so i'm trying to choose the right components to do that, without needing a splitter box.
I'm planning to use the HD4000 onboard graphics of a i5-3570K processor, with a Z77X-UD5H motherboard which had 3 digital outputs : DVI, HDMI, and DP (DisplayPort).
=> QUESTION : Would it work if i simply plugged each monitor on each of these 3 outputs ?
(or, i guess i could use a DP to DVI adapter, if i didn't want to try and find a screen with DP input)
I'm not playing any games, so i don't need the power of a particularly good GPU.
Another question : is it uncomfortable in your experience, to not have exactly the same three screen ? That would enable me to have one with a DP input (probably more expensive), with two cheaper ones.
PS : there is another thread on the same subject here, in the "CPU" board :
http://forums.overclockers.co.uk/showthread.php?t=18402239