Re: "Final" Dell XPS 420 Video Card Upgrade Question(s)
Both the 9800 GTX and GTS 250 are old cards. If you are looking for something in this range, go with the GTS 450. Others have used the GTS 450 on their 375 watt Dell power supplies. The ATI card in this range would be the HD 5770 or HD 6770 (same with just a name change). The GTS 450 will use less power than the older 9800 GTX or GTS 250.
$160 for an HD 4350 is pretty crazy. The 2600XT is actually a much better card.