GIGABYTE GA-970A-UD3P (rev. 2.0) AM3+/AM3 AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard Number of Memory Slots: 4×240pin Memory Standard: DDR3 2000(O.C.)/ 1866/ 1600/ 1333/ 1066 PCI Express x16: 1 x PCI Express x16 slot, running at x16 (PCIEX16) (Note 3) 1 x PCI Express x16 slot, running at x4 (PCIEX4) (Note 3) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. Onboard Video Chipset: None Audio Chipset: Realtek ALC892 PCI Express x1: 3 x PCI Express x1 slots (All PCI Express slots conform to the PCI Express 2.0 standard.) Audio Channels: 7.1 Channels Max LAN Speed: 10/100/1000Mbps