Corsair just published a detailed Application Note on memory performance for
the Intel 955X Express Chip Set. The pdf is posted on Corsair’s Tech Notes page
and can be seen here:

"We can draw several useful conclusions from the results of this testing.
First, we have discovered that selection of the system memory should be tightly
coupled to processor selection. 1000MHz memory looks like an excellent choice if
you are planning to overclock a processor with native 800 MHz front side bus; if
you do not plan to overclock, 800 MHz memory is a good choice. The 667 MHz
memory offers a good compromise solution, providing strong performance and
excellent flexibility."

http://corsairmemory.com/corsair/products/tech/AN504_Intel_955X-Memory.pdf


Corsair just published a detailed Application Note on memory performance for
the Intel 955X Express Chip Set. The pdf is posted on Corsair’s Tech Notes page
and can be seen here:

"We can draw several useful conclusions from the results of this testing.
First, we have discovered that selection of the system memory should be tightly
coupled to processor selection. 1000MHz memory looks like an excellent choice if
you are planning to overclock a processor with native 800 MHz front side bus; if
you do not plan to overclock, 800 MHz memory is a good choice. The 667 MHz
memory offers a good compromise solution, providing strong performance and
excellent flexibility."

http://corsairmemory.com/corsair/products/tech/AN504_Intel_955X-Memory.pdf