Why isn't AGP 2x being enabled?

W

Whipsmack

Gawd
Joined
Oct 17, 2005
Messages
675
My motherboard has AGP 1.0 compatbility, this means it can go up to 2x speed. But when I check under everest it says its only running at 1x, and warns me that I should be running at 2x.

I checked all over in bios and there is no options for this, any ideas how I could change this?

Thanks!
 
your running a x850xt in a 2xagp slot? fi you are you really need to upgrade that motherboard.
 
If that card is for the P4P800 in your sig, it should be running at AGP8X. Your motherboard is most certainly capable of that.
 
na this is for an older computer.

I have a quick question. My motherboard doesn't support fast write AGP. I got a new graphics card for this old computer (ti4200) which does have fast write...is it backwards compatbile? Somethings not right because it doesn't even boot up at all, just beeps and completely black screen.
 
what is the motherboard? and its chipset? In many cases an older board may claim to meet a spec that should allow it to run more modern video cards - but the spec may have changed since the manufacture of the motherboard and the new cards came out...
ran into this problem with my old KX133 system... went from an old geforce to the geforce 3 and no go - as the motherboard did not provide enough power to the card...
Either buy an older card via ebay or some "Mom and Pop" store with old stock that was of the same "generation" as the motherboard - or expect to have to upgrade the motherboard too...
 
I would bet that the Ti4200 that you're planning on using is a AGP 2.0 card, requiring 1.5V and running at 66MHz. See chart below. A 2x/4x card will not work in a AGP 1.0 (1x/2x) slot.

AGP Version Signaling Voltage Peak Speeds
AGP 1.0 3.3 volts 1x at 267MB/s, 2x at 533MB/s
AGP 2.0 1.5 volts 1x at 267MB/s, 2x at 533MB/s, 4x at 1067MB/s
AGP 3.0 0.8 volts 4x at 1067MB/s, 8x at 2133MB/s


Hope it helps. You may need something older for that board. If you do infact get a black screen and beeping, you're outside the voltage for the AGP card on that board, go find an older card.

CONFIRMED: Ti4200 is AGP 3.0 spec (4x/8x)
 
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