Reduce FSB speed or FSB/AGP multiplier

[obay]

Hi,

I have 800MH EB processor on a Gigabyte GA-6BX7+ mobo that base on the 440BX chipset.
the problem is the memory and the processor shuld work at 133MH FSB (and they are, the mobo support 133MH FSB) but the maximum GRANTED speed for the mobo is 100MH (the chipset limit) what makes the system lockup and unstable.

finally i tryed SiSoft Sandra and the mainboard information says:
"Warning W2521: AGP bus speed is too high. Reduce FSB speed or FSB/AGP multiplier"
anyone can tell me what that mean and how can i achive it?

Obay

 

[Zuck Gou :)]

Theres no /2 AGP divider on the bx chipset. Therefore your AGP card is running way out of spec. If its a new card it might be able to handle it though. Thats what the Sandra warning is.

BX doesnt officially support 133mhz FSB, so that might be your overall problem and a new mobo may be in place.

However, I have ZERO experience with that mobo so maybe wait for other ppl to reply before jumping to anything too quickly.

 

[obay]

the AGP is Creative RivaTNT 2 Value. it's old but not dead yet.

Obay

 

[Zuck Gou :)]

My Diamond V770 Ultra can run at the 89mhz you've got yours at.

The 'Value' might be holding you back :/

 

[outhouse]

The GF-2 line really does well with out of spec speeds, have you tried to cool your northbridge with a small heatsinkfan? What are your system temps?

goodluck

 

[obay]

no, i didn't try to cool any part of the system (except the CPU ofcource) but the CPU temp is 20.5°C/68.9°F.

there is another problem about the mobo that it includes promise builtin card that offer 2 more EIDE channels what makes the total number of IDE devices that you can connect rise to 8! but when i activate that feature the computer become really unstable and hangup when i try to copy anything to any device connected to that promise channels and i'm wondering if the display card can really cause that?

Obay

 

[Zuck Gou :)]

Well that problem is completely different from the Sandra warning.

I have no idea why the extra EIDE channels are making ya unstable, sorry

 

[ucfswimmer]

i have the same mobo and processor..running the fsb at 124 now with no problems but i did try to up it to 133 once and it would boot and POST however it froze at the windows screen...well anyways..just wanted to say that there is a 1/4 divider on the ga-bx7 which makes the pci bus speed 33.3....that much is printed on the mobo...now im not sure if the agp clock is usually double the pci clock or if it has it's own divider based on the fsb...if its based on the pci clock then i should be running in spec...if it only has its own divider, then maybe it doesnt support a divider that goes higher.

~jeff~