Gigabyte GA-790XT-USB3 Manual - Page 8
Block Diagram - am3 amd 790x
UPC - 818313009791
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Block Diagram 2 PCI Express x8 (Note 1) 1 PCI Express x16 (Note 1) PCIe CLK or (100 MHz) AM3 CPU CPU CLK+/- (200 MHz) DDR3 1866 (O.C.) (Note 2)/ 1333/1066 MHz Dual Channel Memory Hyper Transport 3.0 Switch PCI Express Bus x16 x1 x1 x1 PCIe CLK (100 MHz) 2 PCI Express x1 RTL8111D RJ45 LAN 6 SATA 3Gb/s ATA-133/100/66/33 IDE Channel PCI Bus TSB43AB23 3 IEEE 1394a AMD 790X PCI Express Bus x1 x1 JMB362 NEC 2 SATA 3Gb/s 2 USB 3.0/2.0 12 USB Ports AMD SB750 Dual BIOS CODEC LPC Bus IT8720 Floppy COM Port PS/2 KB/Mouse Surround Speaker Out Center/Subwoofer Speaker Out Side Speaker Out MIC Line Out Line In S/PDIF In S/PDIF Out 3 PCI PCI CLK (33 MHz) (Note 1) (Note 2) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When PCIEX8 is populated with a PCI Express graphics card, the PCIEX16 slot will operate at up to x8 mode. To reach DDR3 1866 MHz or above, you must install two memory modules and install them in the DDR3_3 and DDR3_4 memory sockets. - 8 -