Difference Between These Two Processors?

[Ichigo]

Hey guys, I'm still working on my build but I had a question. There are two 955 X4 Black Editions one is 10 dollars cheaper but a different model name? WHy is this?

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103808
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103674

 

[foothead]

Different steppings.

 

[Ichigo]

so which one should I get?

 

[foothead]

If you are a really heavy overclocker, the more expensive one. if not. the cheaper one.