Quote from: WayKewl on December 12, 2014, 12:28:18 PM

I have an Antminer S3 and an S4.

S3 came first and was running fine around 480-500 GH/s when I pointed to either Slush or BTC Guild.
At both Pools my S3 setting is set within their UI Worker tab to use 256 Min Diff.

Antminer S4 arrived ,setup, configured, pointed it to the Slush Pool and the S4 runs FINE at around 2.1TH/s at both Slush and BTC Pools.
Antminer S4 Done...

Now back to the S3 still running at 480-500 GH/s at the Slush Pool at this point S3/S4 both are reporting 2.6TGH/s at Slush. Full expected power. Great!
HOWEVER, when I now point the S3 to BTC Guild, it wont run past 80GH/s (all chips show fine in the UI, no x or -)
Switch bask to Slush... 500GH/s... back to BTC Guild... 80GH/s... consistent test...
S3 was running 480-500 at BTC Guild before I added the S4...

Is there a problem running both an S4 and S3 on the same network pointing to BTC Guild? Works fine at Slush (I've not tried it anywhere else... my objective is to use Guild)

thanks for any help you can share

My brother had the same problem but reversed. His S4 was running at about 80GH and his S3+s that he's had for quite some time remained running at their normal speed. Restarting didn't help. I updated the firmware on ALL the machines for him, shut everything down, started it back up, waited 30 mins and all was fine. Be careful when updating your firmware, you could brick your miner(s).