On Tue, Oct 28, 2008 at 10:58 AM, Theresa Kehoe <[EMAIL PROTECTED]> wrote:
> Why does HP recommend only half of what the mainboard can handle?

The reason not to recommend 4 GB is probably because of PCI addressing
leaving a memory "hole".  There's little point to installing 4 GB of
RAM if your machine won't be able to use it.  For details see this
thread:

http://mlug.missouri.edu/pipermail/members/2008-October/012890.html

> They currently have only 1 512MB RAM (in the first of four slots) -- is
> there any reason *not* to install a single 1GB RAM into the second of
> the four slots?

>From the specs the mobo is dual channel.  I thought dual channel means
the memory needs to be paired.  Or am I mistaken?

Regards,
- Robert

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