graphic card 4x but run at 2x

I put nvidia graphic card 4x on gigabyte mainboard, which support 2x and 4x AGP slot. And I use Intel celeron 900 MHz. I don't know why my computer show that it use card AGP only with 2x speed (in properties of Graphic card).

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There may be a setting in your BIOS to enable the 4x AGP.
lqmtAuthor Commented:
I have enabled the 4x AGP already in my BIOS!

What is the make/model of your motherboard and also your video card?
Try a different set of drivers.  I have seen some sets of drivers that don't set the AGP speed correctly, and also don't read the amount of memory correctly either.  If you  don't have the latest drivers, try them, if you are using the latest, try getting hold of an older set of drivers and see if that works.

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I will leave the following recommendation for this question in the Cleanup topic area:
Accept: eccs19

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