e4 vs e6 stepping?

I didnt check ur link, but can only assume is the same 3700 i looked at. Is a discontinued proc. From what i read, is a toledo dual core with one core inoperative, not a sandy. Has lower pwr requirment hence runs at a lower temp. I dont know much about toledo. try checkin the model # at amd website, mabye.
 
I've read that as well on the review page there however I'm more looking for imformation on performance, tempatures, overclocking, etc compared to the e4