[lug] AGP 8x question (hardware Q)

[The Matt]

On Mon, 2003-12-01 at 15:14, D. Stimits wrote:
> Do the 8x AGP cards work in the older AGP slots for motherboards that 
> are 4x AGP? I happen to have a 4x AGP, but it supports the Pro 50 spec 
> (has extra slot length supported for higher power consumption, currently 
> it uses an older GeForce 1 DDR card), and autodetect/switching of supply 
> voltage depending on whether an AGP Pro or normal AGP card is inserted. 
> I don't care if I have to run at AGP 2x speeds, but I don't want to buy 
> a replacement for my failing vid card that won't even go in the slot.

It'll work.  AGP 3.0 says 8x cards and boards must support 4x.

The problems I remember were the 2x -> 4x transition.  That had a
voltage change if I remember right (3.3 to 1.5 ?).  But an 8x in 4x
should work fine.  Now, an 8x Pro50 might not work, but I've never used
a Pro50 card.

Matt

-- 
I am a theoretical chemist.  Fear me!
 Matt Thompson -- http://ucsub.colorado.edu/~thompsma/
 440 UCB, Boulder, CO  80309-0440
 JILA A510, 303-492-4662
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