up
210 per miner shipping pay by me the price is to low for me, sorry. The longer you drag, the cheaper it will be.. |
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where are you located?
Malaysia, i can do own collection. |
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Ok i have One S7 left for Sale .55BTC And includes PSU from Bitmain
Please consider my offer |
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Hello,
I have currently 2 miners hosted in Missouri for sale.
They are B9 - 1293w.
Looking to ship only in US.
Price is : 300$ including shipping per unit.
Escrow with OgNasty
Pmed |
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1BTC + actual shipping. Right now running @ 550mhz for optimum heat/power. This is the higher chip count model of s7 - qty 162 - thus more efficient than later batches. The Batch 2 runs 4.6Th @ 575mhz, and Batch 4 runs 4.8TH @ 600mhz. Also the controllers handle more s7 blades if needed. Sold only as a pair. Run completely stock Antminer settings, never had an issue.
Thanks!
Pmed |
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Please take some time to reconsider my offer;)
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It depends on what you mean by loud. I have several s9's and what i found to be a bit annoying is the whine\resonance you hear once the miner stabilizes and starts hashing. I played around with manually adjusting fan speeds and got to a good point. If you underclock the S7 you can reduce the fan speed a bit which should help you out.
I think underclocking is going to be easiest, then look at possible solutions to dampen sound. I don't think you will find fan's with as high of RPM and be quiet, so again underclocking you might be able to look at a different fan. Although that still leaves you with the AP3 it is a good PSU just is in no way quiet (most server PSU's are not). So you can either look at something like EVGA 1600 in atx (pricey), or go to way's of dampening sound. If your like me it's summer so make sure you really monitor what heat does with your solution. Some cabinet's in summer could be a death trap if you don't get enough air in and hot air out. And this is all before you look into ROI if your doing all this for 1 S7 some solutions are going to be hard to justify cost. Thanks for all your suggestions, I've settled with just underclocking it by 30% and it isn't overwhelmingly loud Well done |
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Try swapping your network cable to check if it's working. Try to swap with another Controller board+io board. Reset and replace with latest firmware before you proceed.
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Hi,
hope someone can help me.
Yesterday one of my S7 suddenly stopped hashing and started beeping.
When I restarted it one of the has boards instead of showing oooooo just showed ---------, what the miner would do is that it started hashing for a couple of minutes and then stopped.
They miners are in a controlled environment with several other miners with constante temperature of 55 C.
Also tried with all 3 hashing boards connected change the frequency to 250 and same thing happened.
I tried to test connecting just one board to see which one was not working, with just one board connected it starts hashing normally for a few seconds, then the miner restarts as usual and when it comes back up the temp on the hash board is 95 so it stops hashing.
I tried with the second board, only that board connected and same thing happened.
Tried with different terminales and cables on the PSU.
Haven't tried with the last board since I don't want to damage them.
Could it be the PSU? Any advise would be greatly appreciated.
Thanks
If i'm not mistaken, one of your fan is not working. Get a new fan if it's not working. Should be fine once change. |
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Hi I'm completely new at this. I want to get some consulting on how to set up my own miner. Can you please help?
What's your budget? |
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Hello
Bit new to this and so... Here goes.
Bought Antminer S7, was working great after little time setting up etc. Ran pefectly over the weekend and was hashing around 4.7-5THS. Great, my router needed changing so I splashed out on an TD-W9980 TP-Link router and although the Antminer is still able to connect (DHCP enabled) the hash rate is so very low. I have tried forwarding ports as read in another post (8333 & 18333) No joy. The miner was beeping constantly until I restarted and changed some router settings but still very low hash rate.
Please, any advice would be very welcome.
Cheers
Iain
Please update to latest firmware and reboot it. If problem insist please check on your network cable, exchange it with a new 1 and see how it goes. I advise u to buy a switch port and separate your miner with your router, a mini switch port with 5 to 8 ports will do and it depends on how many miners u have and not need to buy an expensive switch port and the cheapest 1 will do. |
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You are welcome, happy it helped you  And thanks for the nice donation too, it is very appreciated Hey, do you have any idea on how to get a s7 board to work on a S9? Bitmain is screwing me on the new board and I want to try to get it running while I wait. If you could help Id appreciate it and tip you again. Thanks Different firmware can't do. |
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100% is the fan that cause this issue to happen. Change a new 1 will be fine.
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Just change a new fan and it will work perfectly fine.
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how many users can I use in Antminer S7 and they can work all user everytime or only one.
Anyone help me
!
One will be great but different pool for backup. |
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Folks,
I have owned S1's, S3's, S5's, S7's, and now an S9. S9 is the first miner that I have so frequently seen chips turn xxxxx in some weird situations.
In my experience, it seemed to relate to either an unexpected connectivity disruption, or pool issues. However, all the previous miners could handle these situations without letting the chips fail to function. I am still unable to summarize the scenario that could make S9 chips become xxxx. Every time this happens, I have to reboot it to recover the chips.
What's even worse, is I have noticed it could start with a few chips become xxxx randomly on one or more boards, then it soon (within a minute or two) would spread to the entire row (board), then after a while, a second board could die, then another while, your last board.
The most annoying thing is S9 does not indicate such state to me. Like an S5, it beeped the hell out of me if network drops. this S9 would just quietly suicide without even lowering the fan speed.
Have you experience such situations and if so, what are your observations and thoughts?
Thanks for sharing.
first question. your psu is? second question your freq is ? xxxx many times is a show that the psu is running out of gas. reduce freq a bit say 600 to 550 More questions do you set the fans to 80% or 85% or 90%? or are you an auto guy? another question how how is it? in the room and on the pcb and on the chips. if the room is 90f or more even if the pcb and the chips read 60c 90c the psu may struggle. here is why most psus lose gas at 40 to 50c so a 90 f room is more likely to get the psu too warm. try to down clock freq from 600 to 550 or from 600 to 575 I got the S9-B9 so it defaults to 550MHz. Currently I am powering it with 2x HP-1000W which I used to power the S7. I left the fans to auto and they run at 4600/4000 during the day and 4000/3600 at night. Temperature usually is within 50~55 for PCB and 80-90 for chips, with ambient around 10~25 degC. I will try your suggestions when I have some more time. Thank you, phil. Here to answer your problem, the temperature for chips must not reach 90 if reach it will die off and casue the chips to became XXXXXX. It has become a dead chip. See which blade it is and send it back to claim warranty from bitmain. |
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