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Chapter 1
Introduction of AMD790GX Motherboards
1-1 Features of motherboard
The AMD790GX chipset motherboard series are based on the latest AMD790GX Chipset and
the SB750 chipset which supports the innovative 64-bit AMD Socket AM2+ dual core and
quad core AMD Phenom™ processors and 64-bit AMD Socket AM2+/AM2 multi-tasking
Socket AM2 Athlon64 X2 processors and Sempron Processors. With an integrated low-latency
high-bandwidth DDRII memory controller and a highly-scalable Hyper Transport
technology-based system bus up to HT 3.0. AMD790GX Platform Processor Chipset
motherboard series deliver the outstanding system performance and professional desktop
platform solution with the advantages of new generation 64-bit AMD Socket AM2+ and
Socket AM2 AMD Phenom™ FX, AMD Phenom™ Athlon64 FX ， Athlon64 X2，Athlon64
& Sempron processors.
The AMD790GX Series motherboards support new generation Socket AM2+ processors with
an integrated DDRII memory controller for Dual channel DDRII400/ DDRII533 /DDRII667
/DDRII800/DDRII 1066 (AM2 Sempron processors only support up to DDRII667 memory)
DDRII Module up to 8GB, also provide optional DDRII or DDRIII 128Mb GPU Memory .
The motherboard is embedded with SB750 chipset of providing ULTRA ATA 133 connectors
and Serial ATA2 with RAID 0, 1, 10,5 functions which support up to one IDE and six Serial
ATA2 devices to accelerate hard disk drives and guarantee the data security without failure in
advanced computing performance.
The AMD790GX motherboards provide 10/100/1000 LAN function with RTL8111C PCI-E
Gigabit LAN which supports 10/100/1000Mbps data transfer rate. And the embedded
8-channel HD Audio CODEC is fully compatible with Sound Blaster Pro standards that offer
you with the home cinema quality and satisfying software compatibility.
The AMD790GX Series motherboards deliver outstanding value and performance for gamers,
with a true bandwidth design for Multi-GPU configurations. This high bandwidth architecture
in the AMD 790GX chipset are with the flexibility for single or dual card or three cards
configurations. The AMD 790GX chipset provide 2 x16@8 line PCI Express slots to support
simultaneous operation of graphics cards for astonishing performance with brilliant and
intense 3D graphics.
AMD790GX Series motherboard series offer two PCI-Express2.0x16 graphics slots. Two
PCI-Express x16@8 deliver up to 4Gbyte/sec data transfer rate at each relative direction.
When PE4 installed switch card, the PE1 will doubled its bandwidth. Two PCI Express x1 I/O
slot offers 1024 Mbyte/sec concurrently, over 7 times more bandwidth than PCI at
133Mbye/sec, tackling the most demanding multimedia tasks nowadays .The AMD790GX
motherboards also carry two 32-bit PCI slots guarantee the rich connectivity for the I/O
peripheral devices. This motherboard support Hybrid CrossFireX function, the VGA Card on
PE1 or PE4 will activate a Hybrid CrossFire with the onboard VGA Card, the performance
will be increased 15% to 75%.