Antminer overclocking results...

baronetta

I've had 4 Antminers running for about 3 weeks now. Right away they started hashing at a higher rate than they were rated for, but I decided to see what would happen if I overclocked them. I briefly tried the different settings I had found and settled on the one said to be the fastest. But while the readings in the MacMiner window showed around 8.5 gh/s the pools I was using were usually showing about half of that. My attention has been focused on my Gridseeds recently, so finally last night I revisited the Antminer settings.

These instructions are what I was basing my settings on:

To over clock the antminer you put

--set-device antminer:clock=x0781

in manual flags, swap that 7 in 0781 for 8, 9 or A like x0A81 or x0981 with A being fastest.

I found that --set-device antminer:clock=x0A81 showed in the pool as about half of the reading in MacMiner.

Now I'm using --set-device antminer:clock=x0981 and while the speed shows the same in the MacMiner window, the pool is showing about 20% higher than that... so overall, I gained boost of hashing speed of about 120% with --set-device antminer:clock=x0981

Just wish I had caught that sooner, but wanted to share this to help anyone else running the Antminers.

Willian Chang

argment --bmsc-freq

0581 : 150M

0681 : 175M

4F02 : 193M

0781 : 200M

0881 : 225M

0981 : 250M

0A81 : 275M

0B81 : 300M

0C81 : 325M

0D81 : 350M

0E81 : 375M

0F81 : 400M

5081 : 425M

5181 : 450M

5281 : 475M

5381 : 500M

Example:

run at default clock frequency(4F02, 193.75), timeout is 2s

cgminer.exe --bmsc-options 115200:20 -o pool_url -u user -p password

run at 200M clock frequency, timeout is 2s

cgminer.exe --bmsc-options 115200:20 -o pool_url -u user -p password --bmsc-freq 0781