hi, ive just received my pc (dell 9150 2.8 250gig sata hd 7300le 1gig of ram) what is the diff between vga and dvi, i have my system hooked up on the dvi cable only, is it suppose to be better quality or what? also i had to connect the monitor (1907fp) to the system with a usb cable,can someone tell m why that has to be done? thanks
Well, the monitor probably has a usb hub built in if it requires a usb connection. As for the vga vs dvi story, Vga sends an analog signal as a wave, which means it can have magnetic interference, and has a lower bandwidth. Dvi sends the info as digital info, binary, that some people argue gets a better signal, although it is not a noticable difference to most. The major thing about dvi is that you can send a much higher res through it, although your monitor probably doesn't support more than vga can carry, as a 19inch monitor.
dvi is to connect to HD compliant devices like HDTV , vga is for standard monitors. most recent lcd monitors have both dvi and vga, when you have an optio, its always best to use dvi since it offers best resolution
k thnks for the info guys
FYI, DVI is also intercompatible with HDMI devices since they are essentially one and the same. The only difference being HDMI can transfer audio signals as well.
(S)VGA is an older analog standard, and as such suffers from reduced image quality.