On May 27, 2011, at 4:46 AM, pdimage wrote:
The G5 AGP Pro slot is backwards compatible with earlier AGP
standards.
Nope - the G5 agp pro slot is not backwards compatible with
earlier macs
as the adc power pins (3 and 11) were moved out of the main slot and
onto a
stub so that 3 and 11 could be used to provide 8x agp. The G5 agp
pro cards
are G5 only simply because of the adc connections. Not a problem in
pc agp
pro design so pc agp slots could be backward compatible.
Not all G5 Macs came with ADC cards. My G5 had the dual-DVI ATI RV351
128MB Radeon 9600 Pro. I've placed other AGP cards into my G5, and the
ones I've not been able to fit because of slot issues were all slower
AGP cards. I've not encountered an AGPx8 card that didn't fit, but
perhaps they exist, I'm no expert on G5 AGP slots. I would like a
better card for my G5, and I'm considering flashing an nVidia GeForce
7800GS 512MB which I understand is the best possible AGP card for the
G5.
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