ANTMINER U3 Discussion and Support Thread

[fullzero]

ppumpkin thanks for posting these pictures.  You almost inspired me to clean up my U3; but I think I'll wait on no zombie confirmation.  Is it still running solid?

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[ppumkin]

Well, its still early days. Running since 21:52 08/01 ... nothing happened yet.

Usually the first one fell over after 12 hours. I am running 1 stock and one "fixer upper" - Both still going good.

I didn't change anything else so that we can keep this experiment clean.

The one I cleaned seemed to fall over more frequently... so something has definitely changed but 24 is the record to break, then 48, then at least a week!

[irobb]

I honestly think it's caused by the excessive compound.  We shall see. The one I cleaned is still running, no zombies.

[ppumkin]

Thats awesome man! If mine does the same thing then we can almost for sure say it is the excess chinese spunk applied to the units.

RMA Reason: To much spunk causing micro short. Please wipe thoroughly before finishing up.

[irobb]

hahahahahaha

[ppumkin]

I honestly think it's caused by the excessive compound.  We shall see. The one I cleaned is still running, no zombies.

You might have seriosly cracked this case wide open mate. Its nearly 24 hours and by now I have to be resetting something... still going well

250MHz @ 800mV = ~62.5Gh/s - Stable!

[irobb]

Congrats to us for verifying!

I wish one of my chips wasn't bad or I would just keep the damn thing.  Curious to see how well you can keep a stable OC... or are you content with the 62?

[ppumkin]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

[BITMAIN_Janet]

Cgminer Update:
cgminer-run-windows-20141110.zip

For the RMA request, please send email to info@bitmaintech.com.

[BITMAIN_Janet]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

[fullzero]

I honestly think it's caused by the excessive compound.  We shall see. The one I cleaned is still running, no zombies.

You might have seriosly cracked this case wide open mate. Its nearly 24 hours and by now I have to be resetting something... still going well

250MHz @ 800mV = ~62.5Gh/s - Stable!

Looks like I need to follow suit.  Thanks irobb and ppumpkin for identifying this.

[2n3906]

Well at about 35 hours I got the wonderful Zombie status. Guess I'll be giving up on the default setting and running with the 800mV for a bit.

[ppumkin]

Nearly 48 hours and still stable.

Stock and cleaned up. All I did with the stock is put a fan under the heatsink.

Both going well but now at 61.9gh/s instead of 62.5gh/s

[Visvas]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

cannot seem to find any firmware updates on the supportpages?

[dogie]

I am happy with 62

I read that going more than that starts to dramaticlly increase the wattage at the wall. currently it works out  slightly less than 1watt per 1gh/s (about 0.95watt @ 800mV). i have a watt-o-meter and my PC and the 2 U3 are draining 162watts 24/7 from which 40watts is the PC then 60watts x 2 from the other PSU

I had a duff one form the same guy I bought these two. I was lucky to find them cheap on amazon because I know if something went bad returns would be a simple.. and my hunch was correct. The second one was running 45ghs and there was nothing I could do to increase it. Returned and the 3rd one runs like the 1st. No problem at all.

24hour mark now broken and niether the fixer upper nor the stock one ZOMBIED... Interesting.

Please upgrade the latest firmware if it still can start to work..RMA is accepted if it is still working on 45G at below codes:

Code:

cgminer.exe  --bmsc-options 115200:0.54 -o stratum.antpool.com:3336 -u antminer_1 -o p2p.antpool.com:25 -u antminer_2 --bmsc-voltage 0830  --bmsc-freq 0982

cannot seem to find any firmware updates on the supportpages?

Its not on there yet (bumped for it to be uploaded), in the meantime I've mirrored it here because I already had a copy.

[Visvas]

Seems to work fine, although i do believe it now averages a bit lower than with the old version.

My second U3, which used to be the slowest, now works fine, averaging at 63 as i write. However, the other one is now just fu*** up. After a lot of reset, reinstall etc, cgminer now can address it, but only recieves errors back and cannot make use of it.


[2015-01-11 19:16:06] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:06] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:07] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE

And it goes on. With the last cgminer-run, i got different errors, unable to initalize, unable to set freq etc.

[dogie]

Seems to work fine, although i do believe it now averages a bit lower than with the old version.

My second U3, which used to be the slowest, now works fine, averaging at 63 as i write. However, the other one is now just fu*** up. After a lot of reset, reinstall etc, cgminer now can address it, but only recieves errors back and cannot make use of it.


[2015-01-11 19:16:06] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:06] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE
[2015-01-11 19:16:07] AMU 4 attempted reset got err:(0) LIBUSB_SUCCESS
[2015-01-11 19:16:07] AMU 4 GetResults usb read err:(-9) LIBUSB_ERROR_PIPE

And it goes on. With the last cgminer-run, i got different errors, unable to initalize, unable to set freq etc.

Using a hub? Powered or unpowered?

[Visvas]

no hub, directly on the pc. Used to work well for a long time on that port, tried different ports as well. Tried both on the usb 2 and 3 ports.

[dogie]

no hub, directly on the pc. Used to work well for a long time on that port, tried different ports as well. Tried both on the usb 2 and 3 ports.

I would strongly advise putting them on a powered USB hub, especially with three.

[ppumkin]

Well unfortunately something went wrong with my test and both miners stopped mining. When I went to inspect the issue the PSU was off.. Nothing on the PSU was running. Not sure what happened, maybe the PSU is faulty.

I will try another power supply if I can but I can confirm it was running at least 36 hours.

@irobb how is your looking? Still going?