AGP 3.3 Volt!

[patca]

I have the Asus P4s8x motherborad for P4. It says it doesn't support 3.3 volt Agp cards... i have the asus v8420 which is 3.3 volt...but it seems to work... do i have to be worried?!

 

[Crashman]

Why didn't you just say it was a Ti 4200 card? AGP4x spec requires 1.5v operation, AGP2x spec requires 3.3v operation. While a few early AGP4x cards deviated from spec by using 3.3v, that was a LONG time ago.

Your card is AGP2x/4x. That means it can operate at either voltage. Those few very old cards I previously mentioned are the only exception. Proper cards such as yours will operate at 1.5v on an AGP4x compatable motherboard.

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[sherm]

I am in the same dilema. I just bought a Gygabyte GA-8IGX motherboard and I am unsure if my AGP card is compatable.

I have an ELSA Gladiac MX GeForce2. There is no writing to tell me what voltage it uses. is it 3.3v, 1.5v, or both? The website they have is kinda spartan. They don't list their products or give any specs. the documentation that I have doesn't say if its 2x, 4x or what. It does say AGP 2.0 (I'm assuming this is 2x) is this card compatable?

 

[Crashman]

All that can use 1.5V can also use 3.3v. Your card wasn't on the list of cards I saw that were incompatable.

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[sherm]

where can I find this list? On my motherboard it says not compatable with 3.3v video cards. It says it could burn out my motherboard if I use anything other than a 1.5v video card.

 

[Crashman]

Some PC site that discovered the problem posted a list. I can't remember where it was. It was a list of cards which they discovered did not meet the AGP4x voltage specification, even though they were AGP4x. I'm fairly certain no Elsa cards were listed. Some Hercules cards as new as the MX were, however. The rest as I recall were from smaller companies, or were older cards.

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[patca]

thanks Crashman! i was just worried because asus smartdoctor kept telling me "you card isn't supplied with stable 3.3 Volt" but it was working fine! so there's nothing to worry about? no special settings i need?

 

[Crashman]

No special settings needed, someone just wrote the monitoring program wrong.

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[patca]

one more thing, it seems asus smartdoctor says the "AGP Bus VDDQ voltage" is ok (3.3v for AGP 2x, or in my case, 1.5v for AGP 4x) but it says the "AGP Bus 3.3 voltage" is not ok (about 3.02v it seems), Asusprobe for the motherboard also measures about 3.05v ...and sometimes the motherboard beeps...is this a "warning"?

 

[patca]

maybe its something with the motherboard?
P4S8X sis 648

 

[Crashman]

3.3v is also used for other things, maybe it's your power supply?

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[patca]

Yeah, it seems to be the power supply, a friend has the same and it works fine attached to my system... well i'll have to get a new one

 

[Michaelthehibby]

Crashman,

Do you know if a Creative Geforce256 DDR would be one of the ones that would cause a problem. Its not listed on any site as one with a problem but then some GF2s are, but I'd rather know. It supports AGP4X fast writes in its spec but there is nothing about voltages.

 

[Crashman]

Ah, it might have been. Creative actually has a user forum with tech support from Creative techs who occasionally stop in, that would probably be the BEST place to ask (since I can't remember the whole list).

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