it'll go beeeeeep...beeeeeeep...beeeeeeep
over and over again.
learn what they are dude. very confusing, i know.
if you are using ddr2, look at it this way:
the first number, you wont be able to go under 4 unless you ram is some HIGH dollar stuff.
the second number should probably be the same as the first.
the third number can sometimes be one lower than the first. stock, usually it is the same.
the fourth number, take your pick till you find one that works. usually stock it will be 3x the first, but very possible to make it much lower.
A Guide to Memory Timing
this will help.