AV7333 Can take a 333Mhz FSB?

[Tab]

According to asus's site the A7V333 can only run at 200/266Mhz FSB, however accordding to VIA's website all of the Kt333s should be able to take a 333Mhz FSB. Via's Kt333 webpage Who is right and who is wrong? Can someone also explain to me in newbie terms what the Multiplyer for your CPU is and what the NorthBridge and South Bridge do specificly?

 

[mechBgon]

The A7V333 can run 333FSB with a recent version of the BIOS. I believe the 333MHz-bus support began around the 1011 BIOS or so. If you go into an A7V333's BIOS and can opt for three different CPU speeds instead of two, it's got it. Proof.

VIA's KT333 boards are like a lot of others, in that the busses run at ratios to eachother. The desired frequencies for the busses are:

• PCI: 33MHz (for consumer boards)
• AGP: 66MHz
• FSB: what the CPU wants it to be, either 100MHz, 133MHz or 166MHz actual speed, which gets doubled to 200/266/333 because the FSB is a double-data-rate bus

So if the CPU asked for a 166MHz (333DDR) speed, the board would need to run the PCI bus at a 1:5 ratio and the AGP bus at a 2:5 ratio. So if people say a board has a 1/5 divider, that means it can do this combination.