Asus M3A78 - Manual (Page 9)

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M3A78 specifications summary
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CPU AMD ® Socket AM2+ / AM2 for AMD Phenom™FX / Phenom/
Athlon™ / Sempron™ processor
Supports up to 140W CPU
AMD Live!™ Ready
AMD Cool ‘n’ Quiet™ Technology
Chipset AMD 770 / SB700
System bus Up to 5200 MT/s HyperTransport™ 3.0 interface for AM2+ CPU
2000 / 1600 MT/s for AM2 CPU
Memory Dual-channel memory architecture
4 x 240-pin DIMM slots support unbuffered ECC and non-ECC
DDR2 1066/800/667/533MHz
Supports up to 8GB system memory
* Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is
supported per channel. When four DDR2 1066 DIMMs are
installed, all DIMMs run at 800MHz frequency by default for
system stability.
** Refer to www.asus.com or user manual for Memory QVL
(Qualified Vendors List)
*** 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 install a 64-bit Windows OS when
having 4GB or more memory installed on the motherboard.
Expansion slots 1 x PCI Express™ x16 slot
2 x PCI Express™ x1 slots
3 x PCI 2.2 slots
Support PCI Express™ 2.0 / 1.0 Architecture
Storage / RAID 1 x UltraDMA 133/100 connector
6 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,
RAID 0+1, and JBOD configuration
Audio VT1708B High Definition Audio 8-channel CODEC
Supports Jack-Detect and Multistreaming technologies
Supports S/PDIF Out interface
S/PDIF Out port at the back panel
USB Supports up to 12 USB 2.0/1.1 ports (6 ports
at mid-board, 6 ports at the back panel)
LAN Gigabit LAN
Back panel I/O ports 1 x PS/2 Keyboard port
1 x Optical S/PDIF Out port
1 x COM port
1 x LPT port
1 x RJ45 port
6 x USB 2.0/1.1 ports
8-channel Audio I/O ports