Re: Dual monitor and hdtv
Any of the 5 series ati cards, but you'll need a costly Displayport adapter too. Or do you plan on adding a second card? If so I'll let someone else offer advice on that.
The cheapest option would be a hdmi switch. Manual ones go for ~£10.
Re: Dual monitor and hdtv
Displayport connectors are £10 on ebay so that would be better than the HDMI switch.
Re: Dual monitor and hdtv
If you want to power 2 monitors *and* an HDTV via HDMI off one graphics card you would need a 5000 series graphics card plus a rather costly active DP - HDMI (or DVI) adaptor.
But since your DFI X48 mobo has a spare PCIe x16 slot you could just get a cheap secondary graphics card with HDMI output: something like this HD4350 would work fine
Re: Dual monitor and hdtv
I was thinking of that Scaryjim but wasnt sure if it would work. Thanks for confirmation :D