Re: Ivy Bridge worth upgrading from I7-980X EE?
you would see only minimal gains if any. The only interest is if you can get a good price on your current system, as your CPU used to sell for $999, but I'm not sure what it would sell for now.
Even an i5 3570K would be better, overclock better and be *MUCH* cheaper.
So, if you can sell your system for more than your upgrade cost and you have the time and energy to do that, I'd say go for it.
As the universe is curved, there cannot be a straight answer...