Topic: Antminer L3+ for sale at $3400 + shipping (US Only) (Read 171 times)

I'm curious to see how it does over several days at stock clocks. If all is well I might be interested in making an offer on it.

Very civilized post, too bad that wasn't the tone or the content of the original.
Edit: Let me add that I read your comment again and it still find it really harsh "HW error hell"? I did think you were just trying to throw shit at my miner, since that number of HW errors can't possibly affect hashrate and you said "with that many hw, pool side rates are going to be affected harshly.  Id sell it too". Also I assumed you knew what response you would get from bitmain if you told them "Board works great at stock frequency, but too many HW errors for my taste when overclocked"
I apologize if I misinterpreted your intentions.
BTW: 26 mins at stock frequency now, still 0 HW errors. I'll reconnect and reconfigure after posting this

1400w? That is absolutely ridiculous and you know it. I don't know why you are trolling me, maybe just for fun. I just measured (and I don't know why I'm feeding the troll, but anyway).

Measured at the wall 110v with a Kill A Watt. Stock frequency 384 Mhz. and then my favorite 444 Mhz.
384 Mhz. -> 810w
444 Mhz. -> 933w
I'm satisfied with the results, since the specs at bitmain site say 800W +10% at the wall with the APW3. You can try to troll me for the extra 2W if you want.

I only ran it for 15 minutes at 384 Mhz, 0 HW errors all boards, then put it back to my 444 Mhz setting (and my 220v power source).

For serious buyers I'm available for a video call show this test or anything the buyer wants to see. I won't engage in more trolling though. I'll keep replying to serious inquiries and interesting discussion on the machine only.

The power draw at that frequency shouldn't be too bad.  I think on some posts with people running them full out they are drwing about 1000 watts.


First off, I'm not calling you either dishonest or stupid, and neither would be my intentions.  I apologize if that's how it came across.  I'm being honest as well.  My personal opinion, if it were mine, would be to contact Bitmain and see about a replacement board.  They may or may not do something about it.  The hard part would be if they wanted the whole unit shipped back ( I don't think I would do that as it is a lot of lost mining time and ROI gets further away).  I offered what I thought would be a fair price for my concerns.  I think a low ball offer would be what you paid for it from bitmain (about $1850 shipped from bitmain with the PSU and the import fees from UPS/Fedex), Mine also came from the december batch and that's what they were going for.  The market has changed and the cost to mine "right now" always comes with a much higher price tag than waiting till march or beyond and I understand that.  I retract my offer and promise not to post in here again

Honesty is great. Stupidity is not. Rule of thumb dont buy any of your gear as you overclock everything you have.
 

Oh no! You overclocked it!
Your boards generate more errors than my other three if I'm reading those numbers correctly. I'm not surprised by differences inside the same miner. A miner is a collection of boards, that are a collection of chips. Any of those may come from different batches, and even in the same batch each chip/board has differences. I recently bought 6 identical RX Vega 56s. All of them have Samsung memory. One of them overclocks to 990, one of them only to 900 and fails if pushed further. All this is happening in an out of spec range, so all of them are working "correctly", I won't just RMA the one that gets only to 900 If you look for example at S9 autotune, the miner tests each board automatically and assigns a different frequency to each one.

In any case, that is the miner I have, and if someone is interested in buying it send me a PM. It's sad that all this discussion started with someone throwing shit at it to push a lowball offer. But I don't regret posting things as they are, I value honesty. If you look at my ads, you'll see I have a D3 for sale too. I posted that one with blissz firmware that is what I'm using, and with each board tuned differently and with different HW errors. That miner also has a considerable variance between boards. Custom firmware can void the warranty, but I'm not going to flash it with something else to put it for sale...

Yup. Because he probably already messed some Asics up on that board.I'd hate to see the power draw of this miner at thst speed. Probably near 1200watts.

First off, I'm not calling you either dishonest or stupid, and neither would be my intentions.  I'm being honest as well.  My personal opinion, if it were mine, would be to contact Bitmain and see about a replacement board.  They may or may not do something about it.  The hard part would be if they wanted the whole unit shipped back ( I don't think I would do that as it is a lot of lost mining time).

So I'm running mine at 400 mhz with chip temps sitting at 48-51 C and pcb temps at 42C (running in southern California), and in a 48 hour period I average about 520 HW total for all 4 of my boards combined on lower diff settings (only 16.4k on the coin I'm currently mining).  For some reason I do think running on higher diff settings I see a reduction in HW (and I have no clue why).  At 400 Mhz I don't really see any difference in HW errors compare to 384 Mhz

What has me concerned about your 1 board is the severe imbalance of HW errors on it compared to your other 3 boards.  They should all be fairly similar to a degree.  Even I have 1 board on my L3+ that produces more HW errors than the other 3 boards (they all do), but it is only 2-3x as much as my lowest HW board, not 10-20x as much as the middle HW boards, or 1200x as much as your lowest board.  That tells me there is something funky with the chips on that 1 board compared to the other 3.  I would recommend you knock it back down to stock frequency, run it for a day or so and watch that board.  My guess is that it will still produce abnormally high HW errors compared to your other three boards.  You could also try running it in a cooler area and see if reducing the chip temps down normalizes the HW errors on that board.

Also, the DiffA# has nothing to do with your HW errors and pool side hash rates.  DiffA# is just the share difficulty of the last Accepted share submitted to the network (block found) if I remember correctly.

It is not damaged, I'm not damaging it. I'm not going to go further into the overclock controversy. If someone is interested there is enough discussion here https://bitcointalksearch.org/topic/antminer-l3-overclocked-hot-full-review-with-lots-of-pics-2062954 and everywhere else. Also bitmain's warranty has been discussed a lot elsewhere, including with respect to overclocking.

I'll just add that when you buy a used machine you don't know how it was used. I'm showing here how I'm using it and the buyer can make an informed decision. If a serious buyer wants me to perform certain test, i.e. run it at stock frequency for a day and see the results, I'm open to it.

You are damaging or have already damaged your L3+ by running it that high and overclocking it. You also just voided the warranty on it publicly, so whoever will buy this thing is not going to be dumb enough to pay that price. Sorry.

I just checked my L3+'s and they have zero.. '0' HW errors after a 24 hour period (I restart every 24hours to be safe) running and stock speed.

At what frequency are you running them?

That board is a worse overclocker than the others, but it doesn't mean it's broken. Bitmain only guarantees 504 MH/s at the default frequency of 384 Mhz. I saw no HW errors at all when I ran it at that speed, but I overclocked it right away because I know they can run faster. So again, it is not broken.

HW errors only affect the effective hashrate at a much higher rate than what you see there. This machine still has room for overclocking without degrading the effective hashrate. I prefer not pushing it harder for now though. One thing worth trying is blissz firmware. I use it on my D3 and by adjusting each board's voltage and frequency independently I get the most of each board. If there is no interest in this machine at this price I'll keep it and tune it with that firmware.

I would say that is high as well for that 1 board. I've got 2 L3+ right now running for 7+ days and their HW rates are less than half that one board in total for all boards.

You are "wrong" 1227 HW errors in almost 2 days is nothing. Look at the almost 0% under DiffA#. I could overclock it more and still be in an acceptable range, or put it at stock frequency and see no errors, or flash blissz firmware and tune per board for more overclock. There is nothing to be repaired. But you know all this already, nice try.

Edit: I'm honest, not stupid.

damn, that one board is hardware error hell at that frequency.  with that many hw, pool side rates are going to be affected harshly.  Id sell it too 😊.  id offer $2300 shipped with the psu if you want, cause id be sending that board back, or looking for a replacement board.

Hi, I have an L3+ (December batch) I want to sell. It's working very well overclocked to 444 Mhz getting 579 MH/s (see screen capture below). I also have an APW3++ I could bundle with the miner for an extra $200, but that's probably not convenient for you unless you pick it up, since they are expensive to ship (and available on ebay with free shipping for about that price).

I'm in the Seattle area for local pickup, I can ship to the rest of the US, you choose the service you want and you pay for it.

Here is a screenshot I took moments ago: