I want to make sure that i understand how to connect this setup properly.
Dell 30" LCD(dual dvi), Samsung 46" LCD(dvi or HDMI), and DVR(coax - not hidef)
I am looking at an 8800 gtx (I will have to use both dvi's to get full res on the dell 30" )
I am looking at Tv tuners for my sat(if i had to chose now it would be the Happugauge pvr-150) this should cover the DVR option
I don't know how to connect the Samsung tv in the mix - do I need another video card or is there a detail about the 8800gtx that would allow me to do it while still using both dvi's on the dell
also, will the tv tuner card allow me to play the video back to the Samsung through the 8800gtx(not hi def i know)
Nope. The Dell monitor is a DUAL-LINK DVI, not a DUAL DVI. Dual Link is a special type of DVI cable with more pins to support the high resolutions. It does not require 2 separate DVI links; it is still just one connection. Your card has to support Dual Link and the 8800GTX does.
For more info, check out the DVI COnnector Guide at the bottom of the linked page.
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