Asus M4A77T/USB3 User Manual - Page 21

Memory configurations AM3, 2-channel - am3 motherboard

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1.7.2 Memory configurations (AM3, 2-channel) You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 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. • We recommend that you install the memory modules from the blue slots for better overclocking capability. • Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor. • Due to CPU spec., AMD® 100 and 200 series CPUs support up to DDR3 1066MHz. With ASUS design, this motherboard can support up to DDR3 1333MHz. • When overclocking, some AMD CPUs may not support DDR3 1600MHz or higher frequency DIMMs. • 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. M4A77T/USB3 Motherboard Qualified Vendors Lists (QVL) DDR3-1866(O.C.)MHz capability Vendor Part No. Kingston KHX14900D3K3/3GX(XMP) Size SS/ DS Chip Brand Chip NO. 3072MB(kit of 3) SS N/A Heat-Sink Package CL 9-9-9-27 DIMM support A* B* C* • • DDR3-1800(O.C.)MHz capability Vendor Corsair Kingston Kingston Kingston Part No. Size SS/ Chip Chip NO. CL DIMM support DS Brand A* B* C* CM3X2G1800C8D 2048MB DS N/A Heat-Sink Package N/A • • KHX14400D3K2/2G 2048MB(Kit of 2) SS N/A Heat-Sink Package 8-8-8-24 • • KHX14400D3K3/3GX(XMP) 3072MB(kit of 3) SS N/A Heat-Sink Package 9-9-9-27 • • KHX14400D3K2/2GN(EPP) 4096MB(kit of 2) DS N/A Heat-Sink Package 8-8-8-24 • ASUS M4A77T/USB3 1-11

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1.7.2
Memory configurations (AM3, 2-channel)
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 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.
•
We recommend that you install the memory modules from the blue slots for better
overclocking capability.
•
Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
•
Due to CPU spec., AMD
®
100 and 200 series CPUs support up to DDR3 1066MHz. With
ASUS design, this motherboard can support up to DDR3 1333MHz.
•
When overclocking, some AMD CPUs may not support DDR3 1600MHz or higher
frequency DIMMs.
•
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.
M4A77T/USB3 Motherboard Qualified Vendors Lists (QVL)
DDR3-1866(O.C.)MHz capability
DDR3-1800(O.C.)MHz capability
Vendor
Part No.
Size
SS/
DS
Chip
Brand
Chip NO.
CL
DIMM support
A*
B*
C*
Kingston
KHX14900D3K3/3GX(XMP)
3072MB(kit of 3)
SS
N/A
Heat-Sink Package
9-9-9-27
•
•
Vendor
Part No.
Size
SS/
DS
Chip
Brand
Chip NO.
CL
DIMM support
A*
B*
C*
Corsair
CM3X2G1800C8D
2048MB
DS
N/A
Heat-Sink Package
N/A
•
•
Kingston
KHX14400D3K2/2G
2048MB(Kit of 2)
SS
N/A
Heat-Sink Package
8-8-8-24
•
•
Kingston
KHX14400D3K3/3GX(XMP)
3072MB(kit of 3)
SS
N/A
Heat-Sink Package
9-9-9-27
•
•
Kingston
KHX14400D3K2/2GN(EPP)
4096MB(kit of 2)
DS
N/A
Heat-Sink Package
8-8-8-24
•
ASUS M4A77T/USB3
1-11