Can I use 2x or 4x on 8x slot?

[neptunefix]

I'm setting up a server. Is it possible to use an old AGP 2x ATI Rage 128 Pro (I think it's called the Fury?) on a new KT600 motherboard with an 8x AGP slot. The newer voltage is lower, right? Will the motherboard make propper adjustments? What's the deal?

THanks,
jared

 

[Peter]

The Rage 128 chip does AGP 2x, 3.3V signalling ONLY. Rage 128 _Pro_ can do 4x w/ 1.5V signalling, apparently.

KT600 in turn, just like all VIA chips KT333CF and higher, can ONLY do 1.5V signalling (for 4x and 8x modes).

If the card doesn't support a signalling voltage the mainboard produces, won't even fit mechanically. AGP slot and card keying prevents that. See ATi's excellent compatibility chart and drawings here:

http://www.ati.com/support/faq/agpchart.html