4GB ram na Intel D945GCNL + C2D a Etch amd64

[Czechtony]

Dobry den,
prosim o radu jak vyuzit 4 GB ram.
Cetl jsem spousty podobnych dotazu tykajicich se 32bit systemu
o kompilaci s config_himem4g, ale to tady resit nemusim, ne?

Bios spravne vidi 2x2=4GB.

Debian Etch 64bit a OpenSUSE 64bit jen 3,34GB.
--

free
             total       used       free     shared    buffers     cached
Mem:       3340928      57776    3283152          0       3464      19460
-/+ buffers/cache:      34852    3306076
Swap:      4095992          0    4095992



uname -a
Linux gate2 2.6.18-6-amd64 #1 SMP Wed Jan 23 06:27:23 UTC 2008 x86_64 
GNU/Linux




lshw -C memory
  *-memory
       description: System Memory
       physical id: 14
       slot: System board or motherboard
       size: 4GB
     *-bank:0
          description: DIMM Synchronous 667 MHz (1.5 ns)
          product: 0x32472D5544494D4D00000000000000000000
          vendor: 0x7F98000000000000
          physical id: 0
          serial: 0xA406237F
          slot: J6H1
          size: 2GB
          width: 64 bits
          clock: 667MHz (1.5ns)
     *-bank:1
          description: DIMM Synchronous 667 MHz (1.5 ns)
          product: 0x32472D5544494D4D00000000000000000000
          vendor: 0x7F98000000000000
          physical id: 1
          serial: 0xA5061E7F
          slot: J6J1
          size: 2GB
          width: 64 bits
          clock: 667MHz (1.5ns)