I was looking for Asus P5K board as it should support 1333 FSB to match E6750. I read in the Asus homepage following...

"While in DDR2 1066 mode, ASUS´s exclusive technology offers a choice of FSB 1333 ..."

Is that a fancy way to tell that it can actually work in 1333 FSB only if your mem is set to 1066? I would need to invest lot more for 1066 mem just then.

It's also bit odd that it says "...up to 8GB of dual-channel DDR2 800/667 MHz memory architecture", so it is not listing 1066 as supported in that text. However bit lower down it says "DDR2 1066 support".

Besides, all the 1066 mem I was able to find in the same store is DDR3.

Does anybody have P5K in 1333 FSB with 800 mem?

TIA

I have a P5K, and it is a great board, and i have passed some of its limits, would you say? Yes i do have 800 RAM too, i'm not sure what you mean by the 1333FSB, but i have an E2180...if that helps, it is a great board though, very good

FSB=Front Side Bus. The bus CPU is connected to chipset.

In E6750 it is 1333 MHz, while in E6700 it is 1066 and E2180 it is 800.

The board supports fsb up to 1333mhz officially (333mhz quad pumped) And will easily overclock past 1400mhz (400mhz quad pumped)
DDR2 RAM speed is also measured in mhz. DDR800 runs at 400mhz (Double Data Rate measures it at 800mhz, 400x2)
Running your RAM at 1066 (Double Data Rate making it 533mhz) would mean you have an FSB of 2132mhz (533mhz quad pumped)

So basically, a 1333mhz fsb chip only NEEDS 667mhz ram, but most peope opt for 800mhz or sometimes 1066mhz RAM (400, and 533 respecively) because they want to overclock their chips, but still keep a 1:1 memory/fsb ratio.
~Bryan~

You can run your memory over a 1:1 ratio (ie running a 1333 MHz CPU and then running DDR800, or even DDR1066 memory), and if you use a divider it WILL give you better performance than running it at 1:1 (At least when i tried this using SuperPi it did).

DDR1066 comes in DDR2 and DDR3 flavours, however DDR3 runs at 533 MHz, whereas a 1333 MHz CPU runs at 333 MHz.

Of course using dividers you could use a 1600 FSB chip (...when they finally come out) and some rubbish DDR just fine, albeit with a performance hit.

For what it's worth (which is probably not much), i've had this board running with the CPU at 400 MHz (ie 1600 MHz effective), as well as the RAM at DDR800, i've also then clocked the RAM up to DDR1075 and the CPU FSB to 425 MHz.