Why dont my memory timings match up

not sure if you did or not but the voltage must be brought up to spec as well as the timings

another thing first bring up the voltage, then bring the timings down n increments not all at once.

yes, i did change the voltage, and then i restared, then i changed one value at a time, no matter which one i changed the system would crash. Im wondering if they went me the wrong ram, or if i am just stupid and doing something wrong.

well i have an intel d975xbx2 so i am using intel bio's, there is an option to overclock memory. It askes me what i would like to set all the settings from 5 down to 4, i change 3 different items, i believe they are cas and stuff like that, i dont know the technical names, anyway i change all of them to 4 and then i leave the last value at 12. if you need more specifics just ask, and ill write them down. but i change everything, or even if i change one at a time it crashes. i also changed the voltage to 2.2 which is fine, the ram seems stable as long as you leave everything at 5

I am not sure which of these values i have changed besides for the overclocking of the fsb and so forth, and some of this info you may not need but ill put it all down here anyway
enhanced power slope is enabled
fsb voltage is at 1.250
mch/ich voltage is at 1.525
host clock frequency changed from 266 to 275
processor voltage is at 1.325ov
reference frequency is at default
memory frequency is at 800mhz
tcl is 5 when stable
trcd is 5 when stable
trp is 5 when stable
trasmin is 12
voltage is 2.20 for ram
PCI bus is at 33.33 mhz
PCI latency timer is 32
HPET is disabled.

what memory timings am i missing, and how would i locate them. also i believe that the pci is 33.33 x3