Unlocked core, now what (Phenom II X3 710)

[nonewsgoodnews]

Ok so I have a Phenom II X3 710 processor. My motherboard is a gigabyte GIGABYTE GA-MA785GM-US2H .
When I first got the pc I tried to turn on "ACC" to unlock the 4th core on my processor and it didn't work. Well today I was in my bios and decided to look at some settings again and I decided to change some other setting to "hybrid" I think it was called ECC or something like that.

Well now my processor is listed as: AMD Phenom II X4 10 2.60ghz.
So I guess the unlock worked afterall. But since there is no such thing as above processor does that mean its not stable? How do I test it? Is there any harm in running my pc this way if it is stable?

 

[enzo matrix]

I guess it did.
No that has nothing to do with it.
Download a program called prime95 and run the second test (the second bullet box down) for 12 hours.
Yes. Including Data corruption and random bluescreens. Also, math errors.