In article <csy5g.11225$>, "ÐïÅßö¥ø§©"
<> wrote:
> I am using the P4PE board and already have 2 512 PC2700 333Mhz sticks
> installed. I just purchased a 1gig PC3200 400Mhz stick to max the board out
> at its maximum 2 gig limit. Upon inserting the 1 gig stick the system won't
> boot. I took it out and did further research and found that the P4PE is
> capable of handling a 1 gig single stick as well as the higher speed
> difference. The ASUS site said to use the PC3200 400Mhz overclocking may be
> required however. Can someone explain to me how to do this in the BIOS and
> what I'm looking for? I found one option for DDR that had 4 options: Auto,
> 275Mhz, 350Mhz, and 375Mhz. It is in the Auto position right now.
Did you read your manual, like section 2.5.2 .
The only three DIMM configuration allowed is:
One double sided DIMM plus two single sided DIMMs.
You cannot use three double sided DIMMs, and the BIOS will
not allow the motherboard to POST that way. Two of the
DIMMs might burn one another if it did manage to start.
In terms of the DIMMs that are most abundant on the market,
your best configuration is two double sided DIMMs in slot 1
and slot 2. With those two DIMMs in place, slot 3 must remain
blank.
In other words, with the three sticks of RAM you currently own,
you can stick the 1GB and one 512MB DIMM in slot 1 and slot 2
and that is the best you can do. You can have 1.5GB total RAM.
The problem is, the chipset really only has enough control
signals for two slots. To make it look like a "full featured"
motherboard, Asus cross-wired slot 2 and slot 3 together. If a
double sided DIMM goes in one of those slots, the other one
has no control signals of its own. If you stick a single sided
DIMM in one slot, there would still be a single sided DIMMs worth
of control signals left on the other slot. But nobody in their
right mind buys single sided DIMMs, because a double sided
DIMM can be twice as dense, making the use of single sided
DIMMs rather pointless.
If you already just happened to own some single sided DIMMs,
then a board like the P4PE might be a lucky purchase for you.
In your current situation, I might want to try 2x1GB, as long
as the 1GB modules you buy are using 64Mx8 chips and not some
other cheaper chip type. The cheapest modules would likely
not work properly in the motherboard - if the modules are
a major brand like Kingston, Crucial, or the like, they probably
use the right chips. But if you find a "bargain" 1GB module
on Pricewatch, chances are it is a stinker.
To illustrate the difference between module types, this advert
shows the cheap bad modules and the better modules in the
same ad. The better modules cost more, but will work with more
motherboards. You have to read the fine print carefully
on web sites like this. Notice how the cheap module only
works with a small set of chipset types, and even then,
may not be stable enough to allow more than one of them at
same time.
http://www.portatech.com/catalog/memory.asp?ID=285
HTH,
Paul
Linear Mode
