Antminer U2 - Overclocking

[Jayjay04]

Hi all,

Just received 2 antminers U2.

First, they are hashing at 1.6gh/s ...
And second does anyone know how to overclock them to 2,2gh/s ?

Thx for your help.

[-ck]

With cgminer adding "--anu-freq 275" will run them at 2.2GH, though most are stable only at 2GH which is "--anu-freq 250".

[Jayjay04]

Thx !

[ndonnard]

Congratulations on your purchase! Hope you have solved your problem

[CryptoFresco]

With cgminer adding "--anu-freq 275" will run them at 2.2GH, though most are stable only at 2GH which is "--anu-freq 250".

Works for me too! Thanks for the tip.

[Raptor2213]

Have you tried applying a voltage mod then going over 2.0?  I was thinking about popping in a 10k resistor in the R2 slot and wondered if anyone else had tried yet.
https://bitcointalk.org/index.php?topic=390929.msg4243390#msg4243390

[Raptor2213]

Just got mine today.  I was able to get them up to 2.4 with 0% hardware errors after almost 2 hours of runtime. 
They do take up two slots each on my Anker 13-port hubs, limiting me to 6 per hub (without cables).

[drakon72]

Hi, I just got my first antminer u2, got it working with cg miner and it also stays around 1.6Ghash/s, I'm super new at this and was wondering were in the code I should add "--anu-freq 250"

here's the .bat file I am using

"cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0781"

Thanks

[dmz241]

Hi, I just got my first antminer u2, got it working with cg miner and it also stays around 1.6Ghash/s, I'm super new at this and was wondering were in the code I should add "--anu-freq 250"

here's the .bat file I am using

"cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0781"

Thanks

You are using older version of cgminer. The latest version is 4.2.3 thats the command on that but you can use the same version you are running right now just enter this and you will be good to go.

cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0981

That will run at default 2ghs without overclocking.

If this helped I would also suggest to take note that these usbs dont do much and I realized as you will that you will need more ghs. I opted for cloud hashing. Look in my signature I now hash everything at https://cex.io/r/0/dmz241/0/ and you can pretty much transfer all your earned income and trade for more cheaper ghs that way you can build up your ghs. I am to 3.3 ghs in cloud plus the antminer u2 now started off with just one antminer u2 the trick is to keep reinvesting until you have like 20ghs then just reinvest 20% and withdraw the rest. Thats my plan atleast.

[-ck]

Hi, I just got my first antminer u2, got it working with cg miner and it also stays around 1.6Ghash/s, I'm super new at this and was wondering were in the code I should add "--anu-freq 250"

here's the .bat file I am using

"cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0781"

Thanks

You are using older version of cgminer. The latest version is 4.2.3 thats the command on that but you can use the same version you are running right now just enter this and you will be good to go.

cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0981

That will run at default 2ghs without overclocking.

If this helped I would also suggest to take note that these usbs dont do much and I realized as you will that you will need more ghs. I opted for cloud hashing. Look in my signature I now hash everything at https://cex.io/r/0/dmz241/0/ and you can pretty much transfer all your earned income and trade for more cheaper ghs that way you can build up your ghs. I am to 3.3 ghs in cloud plus the antminer u2 now started off with just one antminer u2 the trick is to keep reinvesting until you have like 20ghs then just reinvest 20% and withdraw the rest. Thats my plan atleast.

That is also wrong information. The current official version of cgminer is 4.3.4 and does NOT take bmsc-options nor does it take bmsc-freq nor did it ever take them (only an unofficial fork did). Only the anu-freq command is in the official cgminer, and yes 250 is a good choice to the person asking.

[dmz241]

Hi, I just got my first antminer u2, got it working with cg miner and it also stays around 1.6Ghash/s, I'm super new at this and was wondering were in the code I should add "--anu-freq 250"

here's the .bat file I am using

"cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0781"

Thanks

You are using older version of cgminer. The latest version is 4.2.3 thats the command on that but you can use the same version you are running right now just enter this and you will be good to go.

cgminer.exe --bmsc-options 115200:20 -o http://api.bitcoin.cz:8332 -u jpkuta.Starterworker -p 123 --bmsc-freq 0981

That will run at default 2ghs without overclocking.

If this helped I would also suggest to take note that these usbs dont do much and I realized as you will that you will need more ghs. I opted for cloud hashing. Look in my signature I now hash everything at https://cex.io/r/0/dmz241/0/ and you can pretty much transfer all your earned income and trade for more cheaper ghs that way you can build up your ghs. I am to 3.3 ghs in cloud plus the antminer u2 now started off with just one antminer u2 the trick is to keep reinvesting until you have like 20ghs then just reinvest 20% and withdraw the rest. Thats my plan atleast.

That is also wrong information. The current official version of cgminer is 4.3.4 and does NOT take bmsc-options nor does it take bmsc-freq nor did it ever take them (only an unofficial fork did). Only the anu-freq command is in the official cgminer, and yes 250 is a good choice to the person asking.

Thanks for bringing that to my knowledge as the only pdf guide I got was with the forked version of cgminer since it booted up with saying cgminer version 2.xx.xx I assumed it was an older version. But with that version that command works I have tested it myself. As for cgminer 4.3.4 being the latest, I wasent aware of that either I was using the 4.2.3 and was so happy with it I never even looked for updates. I mean if it aint broke why fix it right? Any advantage for using the updated version? or should I just stick with the one I have.

[o_solo_miner]

Hello all,
I have a question about to compile cgminer from git on linux (Raspberry Pi).
I comiled it allready a view times, but i am unsure wich --enable i have to use
to get the Bitmain Antminer U1/U2 up and running on the 4.7.1 Version.

With the BFL Jalapeno it was working with the --enable-bflsc option fine.

Could someone please advise me.


EDIT:
====
Solved:  I try ./configure --enable-icarus

after that my U2 was able to run on --anu-freq 275