the board should have the dram multiplier to set the ram at DDR3 1333.

If 200 HTT then the DRAM Multiplier must be 6.66
or any other equivalent numbers..

?It is all based on your options and settings..if you have 250 HTT with Multiplier of 14= 3.5Ghz CPU Clock.. and for your NB Speed should be 2.5Ghz but with multiplier of NB 10 and if you set your DRAM Mutliplier to 1333 your RAM speed would be at 1665Mhz..which i summarize as follows :

250 HTT X 14(CPU Clock Multiplier) = 3.5Ghz ( Processor Speed)
250 HTT X 10(NB Speed Clock Multiplier) = 2.5Ghz(NB Speed)
250 HTT X 6.66/1333(DRAM Multiplier) = 1665Mhz(RAM Speed)

yeah ofkos..

search for dram multiplier/divider or any other related term

the option is 800 / 1066 / 1333 / 1600.
have fun 

haha, another option for you:
core speed: 250 x 14 = 3500mhz
cpu nb speed: 250 x 10 = 2500mhz
dram speed: 250 x 2.67(multiplier for ddr3 1066) = 667mhz(equivalent to ddr3 1333)

Up to you bro...if you see that 1066 is not stable with the divider...than u should changed it to other divider lor...simple is it? All the best yaa...