Quad channel memory and compatibility

Posted by balteo on Super User See other posts from Super User or by balteo
Published on 2012-11-05T09:41:19Z Indexed on 2012/11/05 11:09 UTC
Read the original article Hit count: 344

My motherboard has quad channel memory compatibility. There are 8 memory slots in all:

  • 4 slots are black
  • the other 4 slots are white.

I currently have 4 memory modules of 1 GB each in the 4 white slots. That leaves me with 4 free memory slots.

My question is: can I put 4 memory modules of 2 GB each in the 4 remaining slots or do I have to use modules of 1 GB all over?

FYI here is the output of lshw:

alpha
    description: Ordinateur Tour
    produit: Precision WorkStation 690 
     *-cpu:0
          description: CPU
          produit: Intel(R) Xeon(R) CPU           X5355  @ 2.66GHz

     *-memory
          description: Mémoire Système
          identifiant matériel: 1000
          emplacement: Carte mère
          taille: 4GiB
        *-bank:0
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns)
             produit: HYMP512F72CP8N3-Y5
             fabriquant: Hynix Semiconductor (Hyundai Electronics)
             identifiant matériel: 0
             numéro de série: 56737501
             emplacement: DIMM 1
             taille: 1GiB
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:1
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns)
             produit: HYMP512F72CP8N3-Y5
             fabriquant: Hynix Semiconductor (Hyundai Electronics)
             identifiant matériel: 1
             numéro de série: 48115124
             emplacement: DIMM 2
             taille: 1GiB
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:2
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns)
             produit: HYMP512F72CP8N3-Y5
             fabriquant: Hynix Semiconductor (Hyundai Electronics)
             identifiant matériel: 2
             numéro de série: 48115523
             emplacement: DIMM 3
             taille: 1GiB
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:3
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns)
             produit: HYMP512F72CP8N3-Y5
             fabriquant: Hynix Semiconductor (Hyundai Electronics)
             identifiant matériel: 3
             numéro de série: 48115424
             emplacement: DIMM 4
             taille: 1GiB
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:4
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide]
             fabriquant: FFFFFFFFFFFF
             identifiant matériel: 4
             numéro de série: FFFFFFFF
             emplacement: DIMM 5
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:5
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide]
             fabriquant: FFFFFFFFFFFF
             identifiant matériel: 5
             numéro de série: FFFFFFFF
             emplacement: DIMM 6
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:6
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide]
             fabriquant: FFFFFFFFFFFF
             identifiant matériel: 6
             numéro de série: FFFFFFFF
             emplacement: DIMM 7
             bits: 64 bits
             horloge: 667MHz (1.5ns)
        *-bank:7
             description: FB-DIMM DDR2 FB-DIMM Synchrone 667 MHz (1,5 ns) [vide]
             fabriquant: FFFFFFFFFFFF
             identifiant matériel: 7
             numéro de série: FFFFFFFF
             emplacement: DIMM 8
             bits: 64 bits
             horloge: 667MHz (1.5ns)
     *-pci:0
          description: Host bridge
          produit: 5000X Chipset Memory Controller Hub
          fabriquant: Intel Corporation
          identifiant matériel: 100
          information bus: pci@0000:00:00.0
          version: 12
          bits: 32 bits
          horloge: 33MHz

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