FSB problems on the old KT7A-RAID

[Korporativ]

Hopefully this is the right place to ask because quite frankly, i'm stumped. I'm going to be upgrading soon but in the meantime i'm trying to squeeze this old motherboard for all the performance I can get from it. I was flipping through the bios playing with stuff to see if it'd give me a performance boost... some did some didnt(if anyone has a site with reccomended settings let me know). Well, when flipping through there I realised that i'm not actualy running at a 133 FSB. The processor says timing: 100/33 then it says DRam clock: host clk. Well, i tried flipping it so it was 133/33 and the computer wont post. So i hit the reset bios jumper and tried taking out the generic ram I had and just leaving the 512 meg stick of crucial in there. Am I wrong here? would that mean I require PC166 ram or what? I faintly remember something about the 133 being like PCI speed+CPU speed. Thanks for any help!

 

[Viper96720]

Yes if you want the cpu fsb at 100 and the memory at 133. Use the hostclk+pci option I thnk it's called. Otherwise you can see if your cpu will do 133. Set the fsb to 133 and
leave just host clk. It should also be running 133/133. Is the memory using conservative timings?

 

[Korporativ]

I'v tried it both ways to be quite honest. Though I thought that with PC133 ram I should be able to run the CPU FSB at 133. Maybe not. I'm using an Athlon Thunderbird 1Ghz processor along with the stick of Crucial and the motherboard. *shrug*

- edit -
is it possible the processor chip itself doesnt support 133 FSB? I would assume a Thunderbird 1GHz would be newenough still to support the 133FSB

 

[Biguser]

 

[Biguser]

I have the same motherboard and just flashed the new bios.....i am have a 1.13 thunderbird with 512 crucial, as well, and I am successfully running at 133/33.

 

[Johneverd]

Originally posted by: Korporativ
I'v tried it both ways to be quite honest. Though I thought that with PC133 ram I should be able to run the CPU FSB at 133. Maybe not. I'm using an Athlon Thunderbird 1Ghz processor along with the stick of Crucial and the motherboard. *shrug*

- edit -
is it possible the processor chip itself doesnt support 133 FSB? I would assume a Thunderbird 1GHz would be newenough still to support the 133FSB

Many of the Athlon 1GHz chips ran at 100MHz FSB. With your CPU FSB running at 100MHz what speed is you system showing the CPU running at? If its 1GHz then 100MHz is the correct setting. If it shows 750MHz at 100MHz FSB then 133 is correct.

By uping it to 133MHz bus you be actually trying to overclock the chip to 1333MHz.

If thats the case then you can try it at 100/133. That would run the chip at the correct FSB and optomize the memory.