Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 277. (Read 528055 times)

That doesn't really make sense. Your S7 = 2x fans and S5s = 3x fans, identical fans.

Haha! Yes, from where I sit my S7s are at 0.000 decibels!

The S7 is louder than a S5 with the fans at stock speed but if you turn them down to 40% they are as quite or less than my S5

I disagree.
To me 1 x S7 is much louder than 3 x S5's.  Even with fan speed reduction to 30%.

The s-7 is better then the s-5

And depending on your setup there are mufflers that work.

So has anyone said how the S7's sound related to the S5's?  I sold off 3 S5's to upgrade to a new B3 S7, and want to know what I should be looking forward to...

I've got 7 of 17 units tested and running.  The remainder are waiting on a PSU delivery that comes in today.
From my experience, I also don't see a correlation between increased temps and increased hashrate.
In fact I'm seeing the opposite, although its rather negligible.  Units running 50-55c are producing 4825, while units 45-50c are running 4850.
Whoever said these were quiet machines, well I'd have to disagree.  These things sound like a jet engine.  So only benefit to fan speed reduction I see is decreased volume.
at 30% fan speed they are tolerable.  In your case having them at a data center, I'd leave the fan at auto.

It took a long time getting here but I'm really happy with my first S7.  After 2.5 days of running in the Toomim Bros data center, the speeds are holding steady in spite of really low temps in the DC, and HW errors have been 0.0018% the whole time.  I am keeping the fan speed control on auto for now as running at ~40C does not appear to be an issue with hash rate on this box.  I have 3 more coming online today or tomorrow so I'm dying to see how they perform.  My order/confirm date was 9/6/2015/

Good to hear he's moved up, watching him fumble an install of S3s in a data center was painful.. We've all been there at some point...

I agree with you 100% on everything you said in this post.

For the record:  I only encouraged someone to gain access [if possible] to 240 Volts instead of 120.  I did not know their situation or the particulars regarding where they lived (apartment, single family home, conjoined home with other homes, etc...), which would result in further questions.  We never got into any particulars.  I did say there is no limitation on a main service panel like there is for circuits inside of walls and/or conduit at 70 to 80 percent.  Then gave an example:  If a Main service is rated at 200 amps, that's the maximum it can do (200 amps).  dance191 and I simply got into a misunderstanding.  I can see where my statement could have been taken the wrong way by a newbie to electrical work.   Hence his reasoning for his statement.  While I was still stuck on not limiting the main service panel to 70 to 80 percent like the circuits connected to the main service panel.  Even though I was stuck on that, I should not have used the tone I had with him and I probably should have taken it to a PM.  

I also stated that I was pursuing getting my master's electrician license at one time to start my own business and stopped just shy of taking the test for my journeyman's license.  I saw how easy it was to get outbid by a competitor when starting my own electrical business while working for Marathon Electrical Contractors.  So, I ventured into a business partnership with my father training telephone technicians.  After all, I was in that line of work in the Marine Corp.  So, it was obvious I'm NOT a certified electrician.  You probably came in late in the ball game and never saw the posts I deleted.

I did send 2 or 3 PM's to you but you may have been busy at the time.  I did not know how to take the phrase "training gig."  I didn't know if you were being sarcastic or what.  I obviously took it as sarcasm.  Forgive me for jumping to conclusions.  When I did not receive a response from you via PM, I assumed I had offending you with my tone towards a fellow miner.

Most all of my posts on the subject were deleted by me except for the occasions where you may see someone quoted me.  I always make it clear I'm not licensed.  I have 3 years experience in electrical [All of it commercial; not residential] while working for the 2nd largest electrical contractor in the State of Alabama from May, 1994 to July, 1997.  Will I do electrical work for someone?  No, I'm not licensed, nor do I have insurance.  I don't want to be sued if something were to go wrong.  I'll do it for myself and that's it.

I'm actually paying for Marathon to add another 200 amps to my house in December.  I want something that major to be done by a licensed electrician and certified by an inspector so that I'm covered in the event something was to go wrong.  Especially, when I sell my house at some point in the future.  I will run all of my circuits from that new panel myself inside conduit to my mining closet.  I would rip out the conduit with their circuits before I move; leaving only the new panel still on the wall in the garage.  I want to take the 240V/30A outlets with me when I move as well.  This also means I would demo the mining closet and finish the downstairs recreation room where it's located before selling the home.  I may still keep the home just to have somewhere to stay if we should ever come back for any reason.  Might rent it out.  I'm just not sure yet.

But again, forgive me for jumping to conclusions about sarcasm after no response to my PM's.  I suppose I should have been more patient and waited for a response.

Good luck with the dress hunt.

ROLL TIDE!

I don't know.
All I can post is what I do know.
Had no idea how nefarious the forum is.
Consider me schooled .
He does vip high dollar clients

If you would kindly not start a conversation with yourself, that would be great. You were permabanned for doing just that, one would think you'd have learnt by now.


Last I heard Yoshi was doing a larger role then being involved with public sales. If it was true wouldn't he just post the email?

Yes, I totally agree with you.  I've done this myself before my kilowatt meter went out on me.  I've also seen this on youtube with fans hooked up to a meter.



I could go along with that.  However, I'm sure there are multiple reasons why the rig runs better at a certain range of temperatures than other temperatures outside of those ranges.  Adjusting the fan speed while monitoring the hash rate and HWE's reveals this.

But yes, I could see the importance of fans at high enough RPM's to keep the temperature from going so high as to make the heat sinks fall off due to possible vibration.

No need to apologize to me, I was not speaking specifically about any one person. Reading back I can see where it could be taken as such. I saw the 240 conversation  and as you know that was one of the first things I did. I think people running 240 over 120 is right up there with exhaust and running at spec. I think you know we have both worked in different fields for decades and both are electrically based with many parts falling under the responsibility of an EE. Many times I am forced in that role due to various things.

The intention of my post was to stress how much each person must investigate each little thing for himself. They must have someone who can look at every circuit and make sure it is to spec. The NEC is there and code should always be followed except when the inspectors agree with something someone found which is an exception. There are many people who interpret things their way. I prefer to ask several people and you might remember me mentioning I have a friend who is a licensed electrician. He is a hardass. He isn't going to let me do anything shady "even though it would be OK" Oh he will say "Well, if that's the way you really want to do it..." "But, what I'd do is..."
I could not tell you what you and the other gentleman were debating at this moment. I had a few minutes to make a post this morning before leaving. I'd read some of the previous posts regarding a 220 / 240 circuit compared to 120 and wanted to chime in with my own opinion which in my mind at that moment had no bearing on one specific person. I am 100% serious regarding my previous post. People must be vigilant. Someone may see how happy we all are with our 240 and try to throw a breaker in, or someone tell them it is OK to throw the breaker in that wire will handle it, and they want to believe them so bad they do it.

I think some people are capable of following printed instructions and placing peg A in Slot B, but some people are not. I am confident everyone here has met someone who should not be plugging in a miner period. I want people to know the only thing they should do is have an electrician approve everything they do, or they should have an electrician do it and as notlist3d stated, they should ask a helluva lot of questions.

I also have no doubt there are plenty of people on this forum who know way more than most, have never been a licensed electrician, and from an understanding that is part talent, part experience, and maybe something shown to them a few times they understand how to create safe circuits. Unfortunately that does not mean it is code. The code is so screwed up in so many places, and the local good ol boy networks manipulate them as well if you do not have someone who knows their system sign off you may be asking for trouble.

I think if we took a poll we would find the people most qualified to hand out household circuit advice, or even laying out a full Main and sub with all circuits would not be so willing to do so, and be more of a mindset to tell someone to get their local electrician involved.

Maybe it is just me, but I seriously do think the electrical changes / work done by anyone who doesn't understand how power actually works and either knows the basic formulas or at least knows their meaning and where to look them up are people who are in need of onsite assistance.

Set aside the dangerous parts, losing your life, possibly killing many others, but in many, many places if you add a circuit without having an electrician OK everything and you have a fire because of what you added your insurance will tell you to kiss off. There are many of us capable of running circuits and calculating the load to the main or a sub to make sure we aren't exceeding it, yet that is the way. Where I live you must have a licensed electrician sign off on anything you do except change a wall outlet. You can't even add GFCI outlets without it, and while I think it is unfair for philosophical and political reasons (I think most would agree we have too much intervention from our governments and it is getting worse.) It is still a safer method.

It is anyone's choice on this forum to take matters into their own hands, just like it is anyone's choice anywhere. I do not feel as though we set a great example for many newbs. While it is their choice just like it is mine, I am also extremely safe, I usually get opinions from 4 or more people, I come up with what I think is not only the best current way, but plan for the future, and then take it all to an electrician. I have no doubt I would be fine to handle all of my electrical work, but that off-chance there is something I don't know about a particular breaker, I use the wrong box clamps or my main, or have a bone-headed moment I've had someone who knows the code, has the relationships with the local inspectors and utilities, along with being someone I've knows and trusted for many years.

I am recommending people truly do think safety first and  error on the side of caution. I would also recommend people who do know and are familiar keep telling people it is to their advantage to have an electrician visit. It usually doesn't cost to get a quote, and I love what the guy did with Craig's list. Picking up a good electrician that way should be easy, but look at credentials and insurance.

One last thing, liability can be a very fine line. Telling someone something is safe to do and a year later they burn their house down, well obviously it was their decision, but I know how I would feel as a person, and in today's sue sue sue world you never know what someone could pull out of a judge. It is too risky. So I speculate.

I hope this helps clarify and qualify what my opinion is.
Regarding you dmwardjr I think you have some great knowledge in many areas and the boxes you designed and built obviously teach some  of the very skills I mentioned in an excellent manner.
I do think if any of us are going to answer a question we should be thorough with safety first. It would be great if it was just another post, but there are serious ramifications with that information in the wrong hands. Along with that are disclaimers, I am not a licensed electrician, you should always confirm everything with a licensed electrician, and so on.

By the way, I am not a licensed electrician and there are a helluva lot more people on this forum and many others who know way more than I about electricity. That doesn't mean when I say I love 240 I haven't done the research as to why it is better, and I have done everything possible to learn more and more regarding inrush for all types of products, my local and national code in specific areas, and I always try to oversize but understand doing so to an extreme may cause you many other problems. So make sure you work with someone who is able to not only make you feel comfortable, but provide something to show you they know what they are talking about. It can't be a bunch of talk, it should be a license, or some other paper like being bonded / insured. If they back out of that then no dice.

Be safe with electrical, but gain the knowledge so there is not a need to be scared. You damn sure should be scared if you are skating on 25% of what you need to know, and you think you know 95%.
We do not know what we do not know in most situations, and that is where we may cause some of our biggest screwups.

When you look through life and line up all the bad things we usually start assigning those situations to others. My Dad ruined my childhood. My so and so did such and such, but when you stop to consider the one person you really should add to the lineup, you might find that person is the one who caused the most pain, embarrassment, or seriously messed up situations. There was only one person who was there for all of them, and while some aren't your fault, look at how many are, while being honest with yourself. You will come out the other side more energetic and have a new confidence once you learn it happens, it is ok, and now that you know it, you have a choice and the ability to correct the situation.

There is nothing wrong with being a little paranoid. There is nothing wrong with asking several people how to do something and picking through what you are told while prioritizing safety, and there is certainly nothing wrong with admitting you need some help. Always consider you may not know what you think you do. Getting the right person for the job will always be the least expensive and most safe. You have to break down before you build up. It doesn't matter who does it or for why, but like any addiction, you have to make up your mind to do it and for some that takes asking the right people for help.

I hope everyone has a great evening. DMwardJR you should have PMd me man, which I will PM you as soon as I can in a few. I have to buy a dress.
(No it isn't for me - all you sick minds out there )


I would enjoy hearing how other people feel about safety being a concern. Maybe you disagree and do not think it is collectively our responsibility? I enjoy hearing other's thoughts, ideas, and values.

Roll Tide 

I use ipscan24 also.

My two S7's have been cranking along nicely.
36 hours - 4.80TH - 55C - 35% fans
36 hours - 4.85TH - 56C - 38% fans

He takes PayPal also. I always use PayPal.
You can call his number and ask for sales

If anyone was following the problems I was having with my S7 a few pages back, I fixed the problem with a new PSU. The LEPA unit was indeed faulty (11.5V on the 12V) and instead I purchased an EVGA G2 1300W unit. So far so good, the unit is hashing at about 4.55 TH/s, but I'll try rebooting it in a moment to see if that ups the hashrate to the 4.8 TH/s range.

Do you have actual proof such as a transaction in blockchain?  Or anything that is true proof.

A email asking ... does not prove to me as it could be faked easily.

I asked if I could mention this on the forum.
Have been buying from him since s3 days.
Just bought 3 more B2

I saw it but I don't believe it unless Yoshi confirms.  This buy US with a extra warranty seems to be something only you have done, which is odd.

I cant imagine going to support and ask to buy gear.  But I could be wrong Yoshi is a nice guy.