You may have much better luck with pc5300 ram. This newsgroup has dozens of
postings on the problems of trying to use pc6400 ram in all four dimm slots
on many mobos. I am running 3 2GB dimms in this machine now because it will
not boot with all 4 slots filled. The amount of memory is not the issue but
the number of dimms used seems to be. Research your mobo on the
manufacturer's website and especially the user forums there. And read the
threads on this newsgroup on similar problems with ram.

"Noel" wrote in message
...

I am putting together a new build and since PC-6400 DDR2 is sooo cheap I
thought I might consider 8GB on an X38 board.

I already have 2x2GB dimms, and was guessing if I went to 8GB it might
be nice to have 4 identical DIMMS, which are still available (ie,
another 2x2gb of the pair I have now).

Anyone have wisdom about this? My main uses NOW are MS Flight
Simulator, Gigastudio, and both of those benefit from at least 3GB,
beyond that I don't know. I don't forsee video editing . . .

Thanks for your replies,

Noel


--
Noel