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Originally Posted by Coppertop
Ok the solution presented above did not solve the problem. Upon reading my mobo manual I notice that it tells me that my mobo will only support 1.5V AGP cards. It specifically mentions that it does not support 3.3V AGP cards. I'm thinking tha the two cards that do not work may be 3.3V cards. I have looked online but cannot seem to find out what these cards voltages are. Can anyone help with this? Thanks again for any and all input.
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Hmmm, think I found it for you Coppertop.
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* All 8x cards are 0.8v AGP 3.0 spec
* 8x cards will fit in 1.5V slots, and can tolerate the voltage, but will NOT run properly
* 4x cards can be either 1.5V or 0.8V
* 2x and 1x cards are either 3.3V or 1.5V
* Except in the case of the 8X cards, using the wrong voltage card with the wrong motherboard can result in damage in card and board
* If you install a card of incompatible voltages with the motherboard's specs, the card will NOT run
The connectors on AGP video cards are keyed in such a way that you can only install equipment that have compatible Voltage keyed connectors. Normally the key of the card determines its signal voltage. AGP 1.0 and AGP 2.0 cards using a 1.5V key will signal at 1.5 volts. However, AGP 3.0 devices can tolerate 1.5V - they won't be destroyed, they just might not work properly.
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http://www.neoseeker.com/Hardware/faqs/kb/10,63.html
Hope that helps. check what voltage bios is currenty feeding the agp bus (most Ami bios's are changeable)