1 x PCI Express x16 slot, running at x16 (PCIEX16)
(The PCIEX16 slot conforms to PCI Express 3.0 standard.)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
* The PCI Express x16 slot supports up to PCI Express 2.0 standard when an Intel 32nm (Sandy Bridge) CPU is installed.
1 x PCI Express x16 slot, running at x4 (PCIEX4)
* The PCIEX4 slot shares bandwidth with the PCIEX1_2/3 slots. The PCIEX1_2/3 slots will become unavailable when a PCIe x4 expansion card is installed.
3 x PCI Express x1 slots
(PCIEX4 and PCIEX1 slots conform to PCI Express 2.0 standard.)
2 x PCI slots
GFX Card: XFX HD 6870 900MHz 1GB GDDR5 Dual DVI Dual Mini DisplayPort HDMI PCI-E Graphics Card - Black Edition
1 x PCI Express 2.1 x16
Im also running a Intel i5 3450 - 8Gb Corsair Vengeance RAM