Here is mine L308B202,
4.4Ghz - 1.15v
4.5Ghz - 1.182v (boots to OS & light load 1.15v)
4.6Ghz - 1.229v (boots to OS & light load 1.20v)
4.7Ghz - 1.280v (boots to OS & light load 1.25v, it passed Cinebech11.5, but failed in games ie Bf3,..)
I hopped for 5Ghz @ 1.28v, but noo (it almost booted to OS @ 1.30v).. Still kinda ok chip imo