On Wed, May 21, 2008 at 3:59 AM, Nicholas <nicholas at oscc.org.my> wrote: > Seems like it is the way Intel chips are designed. One solution would be to > ensure that 64bit is used. However, due to cost I am sure many would have > gone for the 32bit machines with AHCI mode. Well, 64bit is the solution to address over-4GB memory. But since now, whenever I decided to upgrade a intel chipset mobo over 4GB, performance has significantly decreased. This is the BUG with latest chipsets and bios; not 32bit/64bit addressing issue.