Welcome to the world of MarketSpeak. The FSB is running at 200 MHz. Intel term is "quad pumped" so they say it is 800 FSB. AMD say sit is 400 FSB. Same thing. Wait until you try to figure our 3700+ and other non-clock speed metrics.

and AMD's don't really have a "bus" speed anymore. It's HTT speed (hyper transport tech). AMD put the memory controller in the CPU, so that leg of the race is effectivly 0. The HTT speed the speed between the CPU/memory controller & the... um... chipset? Not sure. Those speeds can go as high as 2000mhz. :)

That's one of the advantages AMD came up with because they have lower clock speeds: speed up data between CPU & other components while Intel kept that speed the same, but upped the clock speed so when stuff got the the CPU it was sent out faster.

I belive the AMD's also normally say "200x2" for 400mhz bus speed. Not sure anymore. :)

And how exactly is it "quad pumped" (AMD's x2 on the bus speed was because they were sending data to & from the memory/cpu wiht DDR at the same time while Intel would only eigther send or recieve data. Not sure what could be quadded here, unless you've got duel channel mem)?

AS I've already said in many past threads, a nice little tool (free software) to pick up is something called CPU-Z. It will tell a lot about your memory, CPU, FSB, etc..

If you look at a typical motherboard the biggest chip is the CPU. Next is the North Bridge and sometimes there is a South Bridge. The North Bridge handles communications between the CPU and the rest of the system, and provides the the interface to the AGP bus and/or other on-board video. In order for the CPU to "talk" to your memory (RAM) it uses a Bus which is just a pathway.

The FSB or front side bus transfers data back and forth between your CPU and RAM.. Stripping away marketing hype actual FSB speed is still relatively slow. If you install CPU-Z, under clocks it will show the relationship. The concept called "overclocking" bumps up FSB speed by raising the mutliper value. The higher the vaule the greater the clock speed of the CPU. The higher the CPU frequency, the faster it does its thing. How high you can go depends in part on how fast your memory is rated. Just like there are faster CPU's, there is faster rated RAM. Of course you pay a premium for it. Installing faster rated RAM if your motherboard supports it will among other things allow you to increase the mutliper. As has already been stated that will bump up the CPU's relative speed.