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Hi I have received two units of S9 and both have one board hashing around 2.7

They are batch 2, is it a normal? Any tips?

Thanks!

As others have said try lowering the freq. I have one board which underperforms as well. If I do a 'save and apply' without changing anything, sometimes it will come up good (higher hash) and sometimes it will come up bad (lower hash). But lower freq usually means better odds of it coming up good when I restart cgminer. I can tell within a minute if it got a good start because it will either come up past 3000 or it wont by that time.

I've got it working with the mysterious "low voltage" firmware from June 22nd. I had to lower the frequency to 593 and reboot quite a few times but now I got it running at 12.6 TH stable, with the slow board around 4000Gh, I guess this is as good as it gets.
I'm wondering if using an alternative PSU to my bitmain one would improve, I will try to borrow one to test.

Heres what my B3 reports....

Code:

Chain# ASIC# Frequency GH/S(RT) HW Temp(PCB) Temp(Chip) ASIC status
1 63 600 4263.66 2 61 91
3 63 600 4278.41 2 63 95
4 63 600 4311.41 5 62 94

Is the low to mid 90's correct operating chip temp on the batch 3?
I've got a batch 3 coming this week.
Thanks.

Its warmer than I would prefer, But ambient is 30C right now

Thank you. I was just wondering what temps I should strive for with the S9B3.