I was running CPU-z when I got a weird error, it said I had an i7. It's not the first time it's done it. Some attempted OC's did that during unstability, but Now I'm running at stock speeds, and it randomly did it.
I wonder if the i5-750 is no more than a stripped down i7-860?
i5-750 has the same die as the i7-870, it's just clocked a little different and has hyperthreading disabled at the end of the production process.