'Aside from the 22nm processor support for Intel 'Ivy Bridge' processors there are a couple of other significant features with the Intel Z77 Express chipset. Much of the hype about the Intel Z77 chipset has to do with the integration of Intel's own SuperSpeed USB 3.0 into the chipset. When the Intel Z77 chipset is coupled with one of the new Intel 'Ivy Bridge' processors the PCIe x16 slots will be capable of running PCIe Gen 3 cards at full bandwidth. Previously PCIe Gen3 cards would run at PCIe Gen2 speeds. An addition to the Z77 chipset is the ability to run three graphics cards, albeit in an x8,x4,x4 configuration. The Intel Z68 and P67 chipsets were only capable of running two cards in an x8,x8 configuration. Both chipsets have the ability to run a single graphics card at x16, or dual cards at x8,x8. The natively supported memory speed has also been increased on the Intel Ivy Bridge platform. The initial Intel LGA1155 socket chipsets like the P67 and Z68 supported memory at 1333MHz, Ivy Bridge will support memory at 1600MHz natively! This hasn't exactly been an issue since all of the motherboards that we have come across since the initial iteration of the LGA1155 chipset have featured memory multipliers that allowed us to increase the speed of our memory. While the speed of the supported memory has been increased, the Intel Ivy Bridge platforms will still only support dual channel memory architecture.'
Source: http://www.legitreviews.com/article/1882/1/
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