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AGP Questions

post #1 of 11
Thread Starter 
Hello guys

I've been buying/acquiring lots of AGP cards lately and I was going to pair them with an e4400 on an AsRock 4CoreDual-VSTA and score some points for the OCN team. But as I was reading the manual 2 nights ago and it says that I cannot use 3.3V AGP cards. If I do, the motherboard will be damaged.

So my question is: Is there any way to get an AGP 2x card to work in there? As I recall, AGP 8x/4x are 1.5V and AGP 2x/1x is 3.3V. Is it possible to mod the BIOS so I can adjust the AGP aperture/voltage? Would I need a different motherboard if I wanted to get these AGP cards to work?

The cards in question:

Rage 128 Ultra (AGP 2x) It's a (4x/2x card) whew!
GeForce DDR 256 (AGP 2x) Looks to be compatible
3DFX Voodoo 3 (AGP 2x) darn...looks like garbage now
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post #2 of 11
Thread Starter 
I kind of need this information fast, so if I need to return anything I will still be able to
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post #3 of 11
AGP 8x = .8v
AGP 4x = 1.5v
Most recent AGP cards support both standards and signalling voltages.

AGP 2x/1x = 3.3v
These are different standards. They should not be able to fit in AGP 8x/4x slots (the keying is different) and maybe damaged if you try running it.
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post #4 of 11
why AGP? and it will surely damage your mobo (2x/1x)

get some cheap fx5xxx's
    
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post #5 of 11
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
AGP 8x = .8v
AGP 4x = 1.5v
Most recent AGP cards support both standards and signalling voltages.

AGP 2x/1x = 3.3v
These are different standards. They should not be able to fit in AGP 8x/4x slots (the keying is different) and maybe damaged if you try running it.
So 8x AGP cards will work in 2x AGP motherboards, but 2x AGP cards may not work if put in an 8x AGP motherboard because the extra voltage may cause damage to the slot?

So even if I get a different motherboard, it won't work unless it is an AGP 2x motherboard? Because my Biostar M7VIG Pro is AGP 4x but can support AGP 2x/1x as long as I change it in the motherboard beforehand.

Quote:
Originally Posted by Sreenath View Post
why AGP? and it will surely damage your mobo (2x/1x)

get some cheap fx5xxx's
No
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post #6 of 11
Quote:
Originally Posted by numlock2.0 View Post
So 8x AGP cards will work in 2x AGP motherboards, but 2x AGP cards may not work if put in an 8x AGP motherboard because the extra voltage may cause damage to the slot?
No... 4/8x AGP cards shouldn't be able to fit in 1/2x AGP slots... and vice-versa.
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post #7 of 11
Some cards are keyed for both. I don't know about those specific cards tho.
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post #8 of 11
Thread Starter 
I am at work, and they had a whole bunch of computer I could mess around with.

I just placed a ATi Rage 128 Ultra into an AGP 8x/4x slot. It seems to fit just fine.

Is there any way I can find out?
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post #9 of 11
Thread Starter 
There seem to be no jumpers on the ATi Rage, so is it safe to plug into my AGP slot?
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post #10 of 11
I I recall correctly, some AGP 8X were not reverse compatible to the 3.3v standard!
    
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