is7 and ram problem...

i just finished to setup properly my is7 under win2k (serial ata and
every component are seen by bios and os, one week to get that.. lol)

now i get a new problem : my pc freeze if i plug the two 512 Mo sticks
in their slot. if i use just one, it works fine (i ve tryed with each
stick of ram, it works good).

specs of the ram : elixir 512 mo ddr333 pc2700 (that's what i read on it
lol...

is that 333mhz ok with the 400 Mhz of the is7 ?

someone told me maybe to underclock the ram, is it a good idea ? how can
i do that ? i just
find a ratio setting in the bios.. ?

nico

TomG a écrit :

> sounds like when it is using dual channel mode, your ram is unstable. to
> under clock the ram, basically you would pick a NB Strap setting, you can
> start with a strap setting that really does match your CPU internal
> frequency (533, 800 for two examples...) and then select a dram ratio that
> slows down the ram.
>
> basically, the way the dram ratio works is the FSB multiplied by the second
> number in the ratio divided by the first number in the ratio. 5:4 ratio
> would be:
>
> (133 (fsb) * 4) divided by 5 = 106.4. DDR is doubled so the ram frequency
> would be 212.8
>
> you would want to be careful NOT to pick a ratio like 4:5 as that has the
> opposite effect of increasing the DDR speed over the FSB speed. get your
> calculator out and do some simple math while you are looking at the bios
> options. different NB straps have different ratios available and I read the
> posts of one guy who purposely went through the different NB straps to try
> different ratios.

ok
the settings was 5:4, and i put it like 3:2, and problems apparently disapears

thanks !



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