Am Mittwoch, den 22.02.2006, 14:31 -0600 schrieb Steven Pritchard: > On Wed, Feb 22, 2006 at 12:28:09PM -0800, Ben wrote: > > I thought PAE was only for 32 bit machine? I've got a 64-bit opteron > > and also noticed that the FC5t3 hypervisor kernel doesn't show all > > 4GB of my RAM. > > A lot of Athlon64 boards only seem to support 3.5GB, Most with Socket 939 support 4 GByte afaics. > like the old > Athlon MP boards. I haven't every been given a good reason why... PCI-Address-Space just below 4 GByte needs around 0,25 up to round about 0,75 MByte normally (depending on PCI/PCIe/AGP devices you have installed). But most newer Mailboards support "Memory-Hoisting" (needs Rev. E Athons iirc). Enable it in the BIOS and use a 64-Bit-Operating-System to access the complete 4**GByte of memory. -- Thorsten Leemhuis <fedora@xxxxxxxxxxxxx>
