I did a little bit of research and found out that I was wrong about increasing bandwidth on the PCIe slots. It does, however, give a lot more support for onboard graphics when using the Ivy Bridge CPU.
"Another aspect of the chipset that has been improved is the support for onboard graphics. Once the matching 3rd-generation processors are out, motherboards will be able to offer three simultaneous monitor outputs instead of just two. Onboard graphics will also be faster, but both of those are functions of the newer processors; when paired with older Sandy Bridge CPUs, the speed will be the same as Z68 and the number of monitors supported at a time will still be two."
http://www.pugetsystems.com/blog/2012/04/12/z68-z77-and-h77-whats-the-difference/
If USB 3.0 isn't a big deal, the Z68 motherboard should fit your specs (assuming you're using a discreet GPU)