So I was wondering if the z68 chipset would be compatible with the new Ivy Bridge Processors. The reason I ask is because if it isn't, I will just buy some upgrades for my current system to last me until next year, then buy an Ivy Bridge system (z77 or x79 chipset I believe). However, if z68 will be compatible with Ivy Bridge, I will buy a cheap Sandy Bridge system (nice motherboard), then buy an ivy bridge cpu when they come out next year!
"According to an article over at the Chinese hardware site, My Drivers, both a firmware and BIOS update will be required in order to ensure that your motherboard will be able to use a new Ivy Bridge CPU. Unfortunately, only the H61, H67, P67 and Z68 chipsets will be “Ivy Bridge-upgradable” with the Q65, Q67 and B65 chipsets being left behind (UPDATE: HM67, HM65, UM67, QS67, QM67 chipsets are also reportedly excluded from the update)."
Note that if you want the PCIe 3.0 features of Ivy Bridge, you will have to buy a mainboard that supports them. Current boards don't, but there will be some becoming available soon with the Z68 chipset -- I have seen announcements for them specifically citing PCIe 3.0 support.
What Leaps-from-Shadows is saying, trying to, is that NONE of the current MOBO's support and NEVER will support PCIe 3.x. They are backwards compatible. Though I'd want it to be, PCIe 3 + GPUs 'today' won't be an added benefit. So unless 3/4-WAY SLI/CF is in the 'playbook' it won't make a difference. The GPU's today barely can saturate PCIe 2.x x8-lanes.
Yes, I'm certain the PCIe 3.x GPUs will work on PCIe 2.x slots and PCIe 2.x GPUs will work on PCIe 3.x slots; difference minimal. If only a single GPU then ZIP, no GPU current produced can saturate x16 PCIe 2.x or come close.