Mainboard Layout of ASRock
A770CrossFire AMD 770+SB700 mainboard
The full size ATX board comes with a 5 phase PWM. Other boards might use a 4 phase design. This board has 3 PCI and 2 PCIe x16 (green+blue in 8+8 for CFX) and a PCIe x1 on board. GbE and 8 ch HDA is supported by Realtek. At the centre is a peddle switch which enables a Dual 8x or single PCIex 16 (green) slot. The AMD 770 is passively cooled by the gold colour heatsink. To it's right is the 24 pin + 4 pin power connector and SATA connector (orange) for connecting to the eSATA port.
The board supports four 240-pin unbuffered non-ECC DDR II SDRAM DIMM sockets with up to 8GB of memory can be installed on board. For AM2 processors, DDR2-533/667/800 is supported. For Phenom AM2+, memory supported is DDR2-667/800/1066. It also support Asynchronous clocking mode between FSB and DIMM.
The new SB700 supports ten USB connectors compliant with
USB2.0 from embedded USB controller (6 connectors at rear panel). The SB700 also
supports a P-ATA IDE for One IDE ports (up to 2 IDE devices) with UDMA-33,
ATA-66/100/133 support from embedded IDE controller. It also support 6 SATA RAID
II ports with up to 300MB/s from chipset with RAID 0,1,0+1 support.
At the rear panel are PS/2 keyboard connector. S/PDIF optical and coaxial connectors, 6 USB, 1 eSATA, 1 GbE and audio ports.
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