On Wednesday 19 September 2007 11:48, Jonathan Arnold wrote:
Stevens wrote:
...
A pc can only use about 3 GB of RAM because the top GB is used by the system for peripheral addressing, etc.
Does that only hold true for M$ or are all PCs the same? How does one get more than 4GB onto a mobo? Do the new ones allow that?
Here's a good article on the situation:
http://kerneltrap.org/node/2450
There was a long thread about this on the Boston Linux Group's mailing list recently. There's a lot about the "PAE" (Physical Address Extension) kernels, as well as some discussion as to whether they were needed or not. Also, many motherboards map the area between 3 & 4gb for other duty, so even if I add another gig of RAM, it isn't clear if I'd actually see it.
If the mainboard is designed to accommodate a CPU with PAE, then it should also have the option (via its BIOS configuration) to map the I/O devices somewhere much higher than the usual 3-4 GB memory hole.
-- Jonathan Arnold
Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org