Topic: ANTMINER U3 Discussion and Support Thread - page 5. (Read 149480 times)

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I'm now running it on cgminer 4.9.0 as I think ck must have put a default volt and freq setting for the U3 in 4.9.2.

So now I can change the settings aslong as I run it on 4.9.0

Thanks for the replies though

I copied it from this thread or possible Dogies setup thread. Then just added the freq and volt on the end as ive seen in videos etc. Ive even copied the frq and volt from ck's readme file in the cgminer folders. But still cgminer is showing 225 and 775mv 

I think there's something wrong with the command line. Maybe some symbols which look alike but are different. Did you type it or paste from somewhere? Also you can try to use a conf file.

Yea ive set it to freq 250 and volt 800 but still it runs at 225 and 775mv

Im using cgminer 4.9.2 if that makes any difference?

Did you try an integer number for frequency? Maybe it doesn't understand decimals.

Anyone?

i still got some of thoose for sell!
If your interested just Pm me i will offer them for 0.12 BTC each

regards

Hi guys,,

Bought a U3 as a little hobby to underdtand the cgminer aspect of mining. I also have 2 S3's but they are obviously easier to set up and maintain.

Im having trouble overclocking it though. Currently runs at 225mhz and 775mv even though I have the bat file set up as follows:-

cgminer -o  -u  -p x --au3-freq 237.5 --au3-volt 800

(obviously with pool data and uswrname data in there.

Can anyone point me to where ive gone wrong?

Thanks.

To be honest once you have an R1 you might just as well run with that and not worry about the Compac. I have said it before but the R1 with CG firmware will give you the easiest to run, lowest cost, fully fledged Mining experience you can find. Antminer interface, no PC needed, integrated PSU and Wireless. What more could you ask for as a learning experience.  

Bottom line remains the same. Whatever you choose, do not buy a U3. 

Rich

And you are right.  I did sell mine and go to compacs. I use a RPI and lotto mine with compacs at this point.  I sold my U3's and R1 for that matter. 

I have mixed feelings as they sucked on windows for me.  Once I got R1 with crazy guy's firmware it was actually not bad for me. I did like the compacs efficiency... so went to those only eventually on my lotto mining.

I am uncertain why anyone would buy a U3, or even run one if they were given it for free? It's 2, soon to be 3, generations of ASIC out of date and unless you have free electricity will loose money.

If you want to mine for fun or just learn about mining, go for the lowest running cost, regardless of hash rate, miner you can buy, which at the moment would be either an R1 or a Compac.


Rich

The U3 in question has an uptime of about 4 weeks at the mo.  That is how oftern i shut it down to clean it.  And as for cost.  I live on £60 per week state pension.  The PSU, Fan and leads were part of my Windows 98 / pentium 4 setup that i got second hand in 2001.  Its nice to see bits of it being used again.  The U3 is the only miner i have that was new.  My S3 and S1 was purchased on ebay as spares or repair and I rebuilt them.  I have built my rig from junk.  So no expense.  I only started mining as a way of heating the flat cheaply.  Its good at keeping the mould off the walls.
And as for how long it took.  Well i cant afford a tv licence, I don't work, i live in a rural area.  And its dark for 18 hour a day here in winter. Yes...I have too much time on my hands.

Also i dont run on a full PC,  It is a small HP mini 10inch screen ultraportable.  I took out the HHD and put windows on a USB stick.  I also took out the battery.  about 80 watts on the wall with the fans and two bifurys too.

I'm pretty impartial.  I make 0 dollars if you purchase one or not.

If you get a R1 with crazy guy's firmware and run a few you will enjoy them.  No dealing with zombies, and a low power controller.  This is a good combination.

If you plan on running on a full sized windows computer.  You are going to have high power controller... not good long term.   Also you will grow to hate zombies, the more you purchase the more you will see it.  I had 3 on windows and grew to hate them.  The constant zombie issue is a pain and you have 0 lotto chance if they are zombied.

But got the R1 as said above and instantly it was better my little u3 farm of 3 ran great off of it and I no longer manually reset zombies.  So I think automation is key to if you enjoy them or grow to hate them.

Hi guys is there any good third party review of these miners?

I would like to have an impartial impressions before buying some. Thanks in advance.

I still have zombies with shorter and shielded USB cables...

But add up all you did to get that running.   Sounds pricy for 50 GH on new power brick for each U3.  There are some modified cables going to a PSU that you can use for multiple.  And add to this the ongoing use of a regular computer it sounds like as controller.  If all that for 50GH... it kills the long term lotto.  Your just speding to much.

I'm sure the power bricks are not amazing stock.  But they did the job for me, ran 3 for 2-3 months I'm guessing and no fire or hot issues.   I will admit my lotto miners were well cooled with extra cpu fan's ran from a fan controller.  But as controller used R1 and low power.  I don't think full PC is way to go with electricity cost.

Are you saying it doesn't go zombie with the setup you described? How long is your U3's uptime so far?

I have a U3 running on windows 7 and i did have problems with it going Zombie every 24h but i switched to using high quality USB leads.  They need to be screened usb leads.  I used some i had from an old printer.  The leads have clear insulation so you can clearly see the screening braid.  They are  thick and chunky so i guess that they have wire with a greater cross sectional area than the flimsy ones you get supplied with the U3.  The leads have a ferrite filter on the USB B end too.

Also be sure to use a good USB HUB and an ATX PSU that can do at least 10A.  My ATX is just 160watt  from an old pentium 4 pc and powers the 5v hub as well as the 12v for the U3.
The U3 pulls around 4.4A under normal load but they can surge for short durations up to 8A.  (the psu bricks that come with them will catch fire and are dangerous)
Also use the latest cgminer4.9.2 (no over-clock code)
The U3 gets hot on the blue base too so i added a small 12v CPU fan to blow air underneath.  I hooked the cooling fan between the +5V and +12V rails of the ATX giving 7v. This way the 12V fan is not too noisy as it is not screaming flat out.

So no! they will not work well  “out the box”, Moreover: they are a 50gh/s miner not 63gh/s.  Over-clock at your own peril.
However, No baby sitting.  Fit and forget. And... you can get them for £30 second hand on ebay as people don't get on with them.
Mine just mines!

It's a huge upgrade if your going from no automation.  The R1 with crazy guy's firmware if it detects zombie it is able to try to fix and even restart R1 to get back up and running.   Compare that to when I had to babysit it seemed my U3's it was a great change.

I had 3 US's and before automation multiple times a day I got zombies.

I think I've had enough with my U3.

My 2 S3+, my S5 and my 6 compac sticks will do.