I have an Asus P5W64-WS board. It runs the 975X chipset. I have upgraded to the latest BIOS and installed an Intel E6850. All is well, and not unexpectedly my temps have dropped about 8 degrees centigrade. My bus speed is reported as 333, FSB as 1333, and my multiplier as 9. My question is, what is the optimal DDR2 memory speed that I should pair with this processor? I am not going to overclock or game, so I am not as concerned about latency or tweaking, I just want to know what the optimal memory speed would be to match the FSB, etc. This computer is used as a trading workstation, so stability trumps wringing the last bit of speed out of the the system. Thanks for any suggestions.