Sorry, thought I'd reply on this even though it's closed, from the way a lot of the info is saying PCIe 3.0 x4 is equal to PCIe 2.0 x8 and so on (x8 equal to x16), but only If you're using an Ivy Bridge processors.
Bro wtf......are you sure???/ That would save so many people so much of a problem.!!!!!
Can you confirm and post links?