Have anyone seen some information related to about what stepping/batches to look for ?

I have just picked up my new 5960X, and the stepping+batch are the following:

SR20Q 3429A714

Most of the CPU's the reviewers got was QFRA as far as i know.. Does anyone know the difference between SR20Q and QFRA ?

Iam still waiting for my EK-KIT X360 set, so i haven't had the time to test it yet.. So iam wondering if iam sitting on a above or below average CPU