ASUS m4a78 Manual Do Utilizador

1.7.2

Memory configurations

You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC DDR2 DIMMs into the DIMM

sockets.

• You may install varying memory sizes in Channel A and Channel B. The system maps

the total size of the lower-sized channel for the dual-channel configuration. Any excess

memory from the higher-sized channel is then mapped for single-channel operation.

• Always install DIMMs with the same CAS latency. For optimum compatibility, we

recommend that you obtain memory modules from the same vendor.

• Due to the memory address limitation on 32-bit Windows

OS, when you install 4GB

or more memory on the motherboard, the actual usable memory for the OS can be

about 3GB or less. For effective use of memory, we recommend that you do any of the

following:

Use a maximum of 3GB system memory if you are using a 32-bit Windows

OS.

Install a 64-bit Windows

OS when you want to install 4GB or more memory on

the motherboard.

• This motherboard does not support DIMMs made up of 256 megabits (Mb) or less.

The motherboard supports up to 16GB memory modules on Windows

XP Professional x64

and Vista x64 editions. You may install a maximum of 4GB DIMMs on each slot.

M4A78 Motherboard Qualified Vendors Lists (QVL)
DDR2-533MHz capability

Size

Vendor

Part No.

SS/

Chip No.

Chip

Brand

DIMM support

512MB

Kingston

KVR533D2N4/512

N/A

HYB18T512808AF3S

Qimonda

Kingston

KVR533D2N4/1G

N/A

HY5PS12821EFP-Y5

Hynix

HYMP512U64CP8-C4 AB

HY5PS12821CFP-C4

Hynix

512MB

Elpida

EBE51UD8ABFA-5C-E

N/A

E5108AB-5C-E

Elpida

512MB

Transcend

512MB DDR2 533 ECC

N/A

6ND22D9GCT(ECC)

Micron

512MB

Kingmax

KLBC28F-A8KB4

N/A

KKEA88B4IAK-37

Kingmax

Elixir

M2Y1G64TU8HBOB-37B

N2TU51280BE-37B61921300CP

Elixir

1-12

ASUS M4A78