ok guys here the deal. i have intel pentium 930 D with intel 965wh MB and dual channel memory at 667 with CAS 5. if i run it at 533 mhz i get CAS 4. so even running it at 533 dual channel i have memory speed of 1066. so it is over 800 bus speed of pentium d what do you guys recommened should i run it at 667 with CAS 5 or 533 With CAS 4

Since 4 clocks at 533MHz is the same amount of time as 5 clocks at 667MHz, go with the DDR2-667 speed.

BENCHMARK AND FIND OUT

do lots of gaming? run 3Dmark and see the score etc