AGP slot at 5volts?????

[holandes]

I was told that there are some motherboards with an AGP 1.0 slot tha use 5volts

Is this true?

How can I find out if the voltage of my AGP slot, I have a 6via82p from Acorp (Chipset via apollo pro+)

Thanks

 

[Jeff7]

To my knowledge, AGP 1.0 supported 3.3v, AGP 2.0 supports 1.5v and 3.3v.
Perhaps an AGP Pro slot puts out that much power? I do know that AGP Pro is designed to be able to feed extra power to high-end workstation-type rendering cards, but that might just be extra amperage and not voltage.

Just checked the specs page of your motherboard; yours is an AGP 1.0 motherboard; supports AGP 1x and 2x, but not 4x, and it's 3.3v. You should be able to use AGP 2.0 cards, like Geforce3 or Radeon, but they will be limited to AGP 2x; some might not work though, because cards like the GF4 Ti4600 use a lot of power, which your board may not be able to provide; even so, something that powerful would be bottlenecked by the motherboard and processor.

 

[Peter]

This isn't about specification revisions (1.0, 2.0), it's about transfer mode. 1x and 2x modes use 3.3V signalling, while 4x mode uses 1.5V.

Power supply to the cards is always 3.3V - and AGPpro slots just provides more power pins to allow more amperage to flow without burning the contacts.

AGP slots and cards are keyed to keep users from plugging stuff together that won't work together.

4x-only and 1x/2x-only AGP slots have one bridge in them (more to the front and more to the rear respectively), so that only the cards that have the matching notch will fit in. Universal 1x/2x/4x slots have no bridge, while universal 1x/2x/4x cards have two notches.

regards, Peter

 

[Peter]

Oh, VIA Apollo Pro+ is a 1x/2x AGP capable chip. So your AGP slot should be accordingly keyed. Like this one:

http://www.ecs.com.tw/products/graphics/b-p5sdb+.jpg

 

[holandes]

Thanks to both of you

Bye