Asus M4A77T User Manual

1.7.2 Memory congurations
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 conguration. 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.
M4A77T Motherboard Qualied 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 1-11

Asus M4A77T Specifications

General

ECC	Yes
Number of memory slots	4
Maximum internal memory	16 GB
Processor socket	Socket AM3
Processor manufacturer	AMD
Maximum number of SMP processors	1
Number of SATA connectors	6
Headphone outputs	3
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Firewire (IEEE 1394) ports	0
Motherboard chipset	AMD 770
Motherboard form factor	ATX
PCI Express x1 slots	2
Controller 2nd interface type	IDE/SATA
LAN controller	Realtek RTL8112L
ACPI version	2.0
BIOS memory size	64 Mbit

Weight and Dimensions

Depth	213 mm
Width	305 mm