Question on the A7V?

[Tony G]

I have an Asus A7V PCI rev 1.02 and bios Rev. 1009

When changing the FSB setting in the BIOS .. it has a little caption on the right giving a description of the item.. It says that When setting the bus frequency higher than 120mhz the PCI bus frequency will be one-fourth (1/4) of the bus frequency..

Now what about the AGP bus and the USB bus.. ?

Also, if this is correct.. if i set the FSB to 133 the PCI bus will be 33, correct? and again what about the AGP and USB buses.. does the divider change for them also?

Any help is appreciated... thnks

[araaraara]

Are you sure that you have a A7V, and not an A7V133? The A7V only officially supports up to 100mhz FSB, with a /3 multiplier for the PCI bus and a /1.5 multiplier for the AGP bus. The A7V133 support the 133mhz FSB and has the /4 multiplier for the PCI bus and the /2 multiplier for the AGP bus when running @ 133mhz. I'm nut sure about the USB bus. If you're not having problems, you shouldn't worry about it.

[Tony G]

Its Definitly the A7V not the A7V133.. but it has the VIA Apollo KT133 chipset.. it does only support a FSB of 100..(200mhz DDR) but i can manually raise it to 200.. wichi n theory is (400mhz DDR)

[araaraara]

There's a difference between allowing you to crank the speed to 200mhz and the computer actually working at that speed. From what I've heard, you're lucky to get more than 110mhz FSB out of that chipset. What CPU do you have? Is the multiplier unlocked? How much RAM do you have?

[Tony G]

True very true.. that was my concept also.. i have a 800 Duron multiplier is unlocked.. and i have 384 MB ram PNY PC133. but i need to know if you raise the FSB past 120 (it says) that the PCI bus will be 1/4 of the bus speed.. again what about the AGP and USB busses also? and if this does change the divider for the AGP and USB busses also along with the PCI .. will it not theoretically support a 133Mhz FSB Chip?

[Terminator]

Max my A7V has ever reached is 110MHz FSB.
It is the same board and yes it does say it uses the KT133.
It will DEFINITELY not support the 133FSB(266) with the new processors. I asked this question myself and was told it won't work and amd's web site also confirms it.
As you raise the FSB the USB and PCI buses do raise with the same /2 /3 dividers but have no idea about 120MHz+ as it will never hit it in my opinion. Was told its the Northbridge that will not cope.
By the way this board has NEVER failed. Is made from granite I'm sure
I just think the manual mentions it to tease us cuz I thought it would reach 120 at least too.... no chance.


T

[Tony G]

Thanks for all the comments.. !