The issues have been discussed in many forums for a couple of years and in
this newsgroup in particular many many times. Do a search on this newsgroup
on "4GB" and "8GB".

You need to check the test reports on the manufacturer's website. The specs
are not always definitive with 64-bit operating systems. You will find many
cases where there are test reports for various brands of ram but no test
reports using a fully populated memory configuration. I learned the hard
way what that meant.

"BigEasy18" wrote in message
...

I have the ASUS CROSSHAIR which supports 8gb or ram and up to 2.9v for
each DIMM and I am running Vista Ultimate 64bit.
I had never heard of issues with multiple 6400.


--
BigEasy18

*'' (http://valid.x86-secret.com/show_oc.php?id=345688)'[image:
http://valid.x86-secret.com/cache/banner/345688.png]'
(http://valid.x86-secret.com/cache/banner/345688.png)
msi 8800 ultra
windows vista x64 sp1*