I also think that L042B076 it's a go for it!
My 1st L042B076
5.0Ghz with 1.424v not bad :P
http://img830.imageshack.us/img830/9787/5000933.jpg
But the 2nd one is the best:
1.424v set on bios ( vCore jumping from 1.416~1.432v )
http://img535.imageshack.us/img535/373/510025.jpg