Asus M2A74-AM - Manual (Page 21)

1.7.2 Memory configurations
You may install 512MB, 1GB, 2GB and 4GB unbuffered ECC and non-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:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows ®
OS.
- Use a 64-bit Windows ® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
The motherboard supports up to 8GB memory modules on Windows ® XP Professional x64
and Vista x64 editions. You may install a maximum of 4GB DIMMs on each slot.
M2A74-AM Motherboard Qualified Vendors Lists (QVL)
DDR2-667MHz capability
Size Vendor Part No. SS/DS CL Chip NO.
Chip
Brand
DIMM socket
support
A* B*
2048MB A-Data M2OAD5H3J4170I1C53 DS N/A AD20908A8A-3EG 30724 ADATA · ·
512MB Apacer 78.91G92.9K5 SS 5 AM4B5708JQJS7E0751C Apacer · ·
512MB Apacer AU 512E667C5KBGC SS 5 AM4B5708GQJS7E06332F Apacer · ·
512MB Apacer AU 512E667C5KBGC SS 5 AM4B5708MIJS7E0627B Apacer · ·
1024MB Apacer 78.01G9O.9K5 SS 5 AM4B5808CQJS7E0751C Apacer · ·
1024MB Apacer AU01GE667C5KBGC DS N/A AM4B5708GQJS7E0636B Apacer · ·
1024MB Apacer AU01GE667C5KBGC DS 5 AM4B5708MIJS7E0627B Apacer · ·
2048MB Apacer AM4B5808CQJS7E0749B DS 5 78.A1G9O.9K4 Apacer · ·
512MB Corsair VS 512MB667D2 DS N/A MIII0052532M8CEC Corsair · ·
1024MB Corsair VS1GB667D2 DS N/A MID095D62864M8CEC Corsair · ·
1024MB Corsair XMS2-5400 DS 4 Heat-Sink Package Corsair · ·
2048MB(Kit of 2) G.SKILL F2-5400PHU2-2GBNT DS 5-5-5-15 D2 64M8CCF 0815 C7173S G.SKILL · ·
4096MB(Kit of 2) G.SKILL F2-5300CL5D-4GBMQ DS 5-5-5-15 Heat-Sink Package
SN:8151030036559
G.SKILL · ·
1024MB GEIL GX21GB5300SX DS 3 Heat-Sink Package GEIL · ·
2048MB GEIL GX22GB5300LX DS 5 Heat-Sink Package GEIL · ·
2048MB GEIL GX24GB5300LDC DS 5 Heat-Sink Package GEIL · ·
512MB Kingmax KLCC28F-A8KB5 SS N/A KKEA88B4LAUG-29DX Kingmax · ·
1024MB Kingmax KLCD48F-A8KB5 DS N/A KKEA88B4LAUG-29DX Kingmax · ·
512MB Kingston KVR667D2N5/ 512 SS 5
SO1237650821 SBP D6408TR4CGL
25USL074905PECNB
Kingston · ·
1024MB Kingston KVR667D2E5/1G DS 5 E5108AJBG-8E-E(ECC) Elpida · ·
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ASUS M2A74-AM 1-11