micro atx motherboard with pci express 2.0

[civicmisfit]

I already bought a micro atx case and now i have to buy a micro atx motherboard. But it seems that very few board have pcie 2.0. My question is, is it necessary to have pcie 2.0 to use a 9800 gt? If not, then is there a noticeable performance increase in pcie 2.0? If this is the case then I need help choosing one of these boards. The problem is that not many people buy micro atx boards and i can find very few reviews on them.

Foxconn G43MX-K LGA 775 Intel G43 Micro ATX Intel Motherboard:
http://www.newegg.com/Product/...x?Item=N82E16813186154

Intel BOXDQ45CB LGA 775 Intel Q45 Micro ATX Intel Motherboard
http://www.newegg.com/Product/...x?Item=N82E16813121357

Intel BOXDG45ID LGA 775 Intel G45 Micro ATX Intel Motherboard
http://www.newegg.com/Product/...x?Item=N82E16813121355