How to get Data:
Batch:
Look on the product sticker on the box or on the CPU. Pictures: CPU | Product Box

Stepping and VID:
Download Coretemp for VID
Download CPU-Z for Stepping.
(Make sure to load the CPU when getting the VID)
Visual Tutorial

Reading the Batch Number:
Example: L149A463-0726

1st letter or digit = plant code (Malay)
0 = San Jose, Costa Rica
1 = Cavite, Philippines
3 = ………….., Costa Rica
6 = Chandler, Arizona
7 = ………., Philippines
8 = Leixlip, Ireland
9 = Penang, Malaysia
L = …………, Malaysia
Q = ……….., Malaysia
R = Manila, Philippines
Y = Leixlip, Ireland

2nd digit = Year of production (2001)
3rd & 4th digits = week (49th week )
5th – 8th digits= lot number
10th – 13th digits = serialization code
Source