OpenSuse 11.2 64bit and 4G memory

I installed OpenSuse 11.2 64bit on PC with 4G memory, and mainboard without video (external videocard, Ati x550)

But top command get me:

Mem: 3919820k total

cat /proc/meminfo

MemTotal: 3919820 kB

Why not full 4G ?


With 32bit linux I get ~3500M - its normal for 32 bit (because interrupts on MB require addresses).

Your BIOS reserves portion of the memory.

>>Your BIOS reserves portion of the memory.

for 64bit mode too ?
Intel motherboard, on P35 chipset.