Topic: Bitmain AntMiner U1 Tips & Tricks - page 17. (Read 106810 times)

Thank you.

So, if I'm getting this right: unless I'm screwing with resistors, which I am ludicrously unqualified to do, I'm going to be only seeing a successful overclock to 2.0 GH/s, which is with the 0981 command. There's nothing else I can do that would otherwise allow me to overclock beyond that.

Thank you, I always felt the same way, but you put it so much nicer.

They're selling Dr. Joe Wallach's miracle dirt. These chips are flip-chip BGA packages, and likely there is an air gap between the chip itself and the top of the plastic package itself (read almost guaranteed), which would act as an insulator, so without the heatsink cooling the PCB itself off (the PCB itself is an aluminum or copper substrate which has the layers of electronics and wired "printed" onto it, and so acts as a heatsink) it would actually get hotter. The only time a heatsink on top of the chip would be useful is if you are trying to push it to its utmost limits, as it would draw off a SMALL amount of heat.

EDIT: An exception to this rule is the VREG, which would benefit from a ram chip heatsink on top of it if you are pushing it past specification.

I see people advertising on ebay sticking heatsinks to the *front* where the chips are. Think that does anything or are some ebay folks selling snake oil?

They're not stable above 2GHs (250MHz) without more voltage. You need to change the resistors to raise the voltage, but that requires better cooling. The solder mask on these conducts heat better than the Block eruptors from what I can tell, so the heatsink does more on these, but it would still be beneficial to remove it. I am going to find a circuit board to practice removing it on first, then once I get my heatsinks in for these, I will remove the mask, and adhere them to the heatsinks, and see how far I can take mine.

I ran 2.2 gh , but with lot of hw error , 1 drop to 1.4 / 1.5 gh , nopoint to oc it

Has anyone been able to OC them successfully past 2.06?

I run the 0981 argument, and it's fine. I run 0A81, and I get lots of HW errors that make the effective rate below 2.0. I'm cooling with a fan.

I have heatsinks I can adhese to the U1's, and I could even try swapping out resistors, but I'm curious if there's an easier way and/or if someone's tried it first.

I'm using the standard BFGMiner, btw.

Yup, you are correct - they work fine with the CP210x drivers.

Also, for the edification of the group, I found it works best to unplug and replug (i.e. restart) the antminers each time you change the frequency if you want to experiment with OCing

I have http://www.amazon.com/D-Link-Hi-Speed-7-Port-Powered-DUB-H7/dp/product-description/B00008VFAF/ref=dp_proddesc_0?ie=UTF8&n=172282&s=electronics  with two BE's and 4 ants running a steady 8.67gh with bfgminer and one arctice breeze fan. (ants overclocked to 2gh) Planning to get a http://www.amazon.com/gp/product/B00DMN2OBU/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1 and another arctic breeze fan to expand my ants..

Mine are running on this:
http://www.ebay.co.uk/itm/10-Port-USB-2-0-Hi-Speed-Multi-Hub-Expansion-with-Power-Adaptor-for-PC-Laptop-/390551625126

With this 5V8A power brick:
http://www.ebay.co.uk/itm/5V-5A-6A-7A-8A-AC-DC-Switching-Adapter-Desktop-Power-Supply-5-5mmx2-5mm-5-5x2-5-/310714289368?ssPageName=ADME:X:RTQ:GB:1123

And they look like this:


It is quite stable!

I have a friend who ran 21 BEs on a raspi using a couple of the other Rosewill 10 port hubs. (Same adapter, and same internally more or less, just different dimensions.) They worked fine, 1 powering the pi, and the other one also powering a fan. https://bitcointalksearch.org/topic/wts-21-block-erupter-mining-rig-7ghs-378388

Have a look here:-  https://bitcointalk.org/index.php?topic=253749.msg2700634#msg2700634

This is the problem, the zadig drivers interfere with the silicon labs driver.

I'm ordering this one later tonight: http://www.newegg.com/Product/Product.aspx?Item=N82E16817182257

Hi,
What usb hub is best for 4 ants and one medium fan?
Can you send me some links?
Thanks...

If your ants are running on cgminer then they do not have the right driver for bfgminer (I prefer cgminer usually, but bfgminer is just a far better experience with these miners, no errors, steady hashes etc). Uninstall the win/*.* zadig driver from every ant, from device manager, then restart the  computer and plug them back in, the silab driver should autoinstall if you have it on your computer. if not make sure to download the silab driver, there are links in this thread I believe. Then run one of the .bat or .cmd lines in here that is appropriate for your configuration and it should work. I used the 3.8.5 cgminer for way too long myself, it is much better on bfg, just the error rates being 0% is, but the compatability with other miners is nice too. I had trouble switching at first, but it was well worth it. If you are dedicated to cgminer, get one of the ones with 3.9.0 and the ant commands added, there are links in here also. But i think consensus is bfg ftw for ants.

Just had to say, I really appreciate the CLI breakdown!

Even after replacing the drivers, tho, bfgminer isn't detecting them... they do work with cgminer, but it's really unstable (Antminer version, something like 3.8.5)

Don't they use 5v though, not 12v?

Has anyone tried uprating the PSU for the Anker 9 port hub?  I was thinking of trying this one:
http://www.ebay.com/itm/AC-DC-Adapter-For-Model-JY071260U-Desktop-12V-10A-10000mA-Charger-Power-Supply-/400581749376?_trksid=p2054897.l4275

This way I could 9 U1's and still have the 'power' port available for a fan. Do you think the internal wiring of the hub will be Ok with 2x the draw (the stock PSU is 5000mA)

WOuld make for a nice tight rig, and would allow me to place this by an A/C that is always on and possibly over clock.

I finally got a chance to switch to bfgminer from cgminer...  and um... yeah... much better!  Thanks for the help!

And yeah, the headaches are absolute torture that no one that doesn't get them can possibly understand.  I've talked to women that have gone through natural childbirth that say their cluster headaches are much worse.  Happily I have  great family and a truly exceptional wife.  There are plenty of times I would like to end it all, but at those times I usually don't have the energy to follow through with it, and I don't want to do that to my family, or frankly my dog.  The family would understand, the dog wouldn't and she takes very good care of me.  She even occasionally warns me when one is about to hit me.  Sadly my dog is getting old, 13 and a half now and last summer she got very sick, we thought we were going to lose her.  $10,000+ later (and of course my wife lost her job shortly after that and it took 5 months to find a new one, but she's worth every penny, we'll get it paid off eventually) she seems to be doing very well health wise, however last week she lost her second eye so she is totally blind now.  We don't know if the illness had anything to do with it or not, but her she developed really extreme glaucoma in one eye last fall causing her a lot of pain.  She blew some blood vessels in the eye and couldn't really see out of it anymore so we decided to just remove it to stop the pain.  3 weeks later she detached the retina of her other eye so she was pretty much blind from then on.  2 weeks ago she developed the same extreme glaucoma in the other eye, very swollen and painful so since she couldn't really see anymore anyway we decided to take the other eye a week ago Friday.  She definitely seems to be feeling better now though! she just gets lost sometimes so I get to be her seeing eye person.  So yeah, I get pretty down sometimes, but I try to enjoy the times I'm feeling good.  Life goes on, just make the best of the good times.  the headaches have slowed down a lot, I'm only getting one every few weeks now, though I still have a constant sort of mild migraine it's still much better than it has been.  And I'm hopeful I will get another complete remission for a few years.  That happens from time to time too.  I've had them since I was 8, and the longest remission I've had was around 5 years.  So hopefully I have one of those on the way soon after 12 years of not having one.    That would be nice!

Sorry if I'm oversharing... sometimes it helps to just dump it out on complete strangers.  I hate to dump it on my family or my wife since they already have to put up with me.

Anyway, love the ants and bfgminer looks to be far superior to cgminer at this stage.  So far my average speed looks like it is 2ghps faster across 6 ants overclocked at 2Ghps, so like getting one of them free in comparison to cgminer.  and no hardware errors yet.  In cgminer over 4 days of continuous running only 1 of the ants had less than 1000 errors.

I'm going to go pet my dog now  

Korxax


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