I've had three 3.0Cs thus far.

1 SL6WU L348A (12 caps) did 3.6GHz @ stock.
1 SL6WK L348A (30 caps) did 3.75GHz @ stock.
1 SL78Z L349B (30 caps) doing 3.75GHz @ stock.

But this one is better than my SL6WK. I put in the droop mod when I bought it so the voltage variance is less, including the overvolting which indicates a better o/cer. It can do up to 3.8GHz @ stock.

I got these here in Singapore mate, few shops carrying them and to my knowledge another guy here has had the same results.

I'll get this under the PhCh system ASAP but there are some issues I need to iron out first as I mentioned in my PM to you hallowen. But I'm willing to bet at least 4.2GHz out of this guy.