ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[AriesIV10]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

That Temp and HW are way too high.  I would be doing a reset and an increase on the fan speed.  Thanks for sharing this test with us.  There is hope for the B7!!!

[fullzero]

Looks like selling miners on ebay is a disaster.
Have a buyer that issued a chargeback claim to their credit card for a purchase 60 days ago.
Ebay doesn't know about it.
Paypal knows about it but the buyer only filed a complaint with their credit card so paypal will only accept
whatever the credit card decides to do. They have the credit card info but will not share it with me.
Told me I will probably have to file a police report for theft. Unbelievable.

Buyer has 4 miners AND the cash. Looks like I will be the one to eat it.

I don't know how anyone can do business like this. Blatant fraud goes completely unchecked.

I have a lot of experience selling miners on eBay.  It comes down to this:

If in US; don't ship outside the continental US.

Don't sell to anyone with bad or low feedback.

Anticipate every possible failure a new miner might have and explain it in your description.

Take actual pictures of each miner including serial numbers, and miner gui screenshots.

List each miner as rated at what GH it typically mines at; not the retail rating.

Clearly state you do not accept returns.

Clearly state your shipping and handling time; and always ship within your handling time.

Include lan cable and jumper switch if possible.

Clearly state what type of PSU is needed, and make recommendations.

MOST OF ALL; know that the best time to sell is also the most likely time you will get screwed.  Choose a price that gives you a small profit or is an even trade; and reasonable miners will buy from you.  Choose a high price and you will only attract scammers and delusional noobs.  If you want to sell miners as a business; make your own website and don't accept PayPal.

Barring the S5+, the S7 is probably the worst miner to sell on eBay; due to its 10x pcie, specific power on sequence (with multiple psu's), need to be set to a manual fan speed, voltage sensitivity, lack of a front fan grill, propensity of individual heatsinks to fall off in shipment, and most importantly high individual unit value.  Play with fire if you want.

[pj40]

Well, 4.825 btc lighter, I went ahead and bought batch 8 so I can finally replace my last S5 and S3.  I'm going to have to bite the bullet and buy another psu since I don't trust 2 hx850's to power this one like I did my batch 3.  But oh well.  I can get a new RM750 for $99 so it's not that much.

I just hope this one performs as well as my batch 3.  That thing is great.

[wolfen]

Well, 4.825 btc lighter, I went ahead and bought batch 8 so I can finally replace my last S5 and S3.  I'm going to have to bite the bullet and buy another psu since I don't trust 2 hx850's to power this one like I did my batch 3.  But oh well.  I can get a new RM750 for $99 so it's not that much.

I just hope this one performs as well as my batch 3.  That thing is great.

Each hash board pulls 400 watts so you should have at least 600w per blade using the 80% rule.
One 850w would not do on two boards.
I would do 850w+850w+750w for blades 1+2+3
I use 1000w for each of two boards. So three 1000w would cover two s7's.

[pj40]

Well, 4.825 btc lighter, I went ahead and bought batch 8 so I can finally replace my last S5 and S3.  I'm going to have to bite the bullet and buy another psu since I don't trust 2 hx850's to power this one like I did my batch 3.  But oh well.  I can get a new RM750 for $99 so it's not that much.

I just hope this one performs as well as my batch 3.  That thing is great.

Each hash board pulls 400 watts so you should have at least 600w per blade using the 80% rule.
One 850w would not do on two boards.
I would do 850w+850w+750w for blades 1+2+3
I use 1000w for each of two boards. So three 1000w would cover two s7's.

Well, my batch 3 is running now on 2 HX850's.  And I haven't burned the house down yet...but since the overall draw is 1293 at the wall for this one, I think 3 is the way to go on it.

[hodedowe]

Well, 4.825 btc lighter, I went ahead and bought batch 8 so I can finally replace my last S5 and S3.  I'm going to have to bite the bullet and buy another psu since I don't trust 2 hx850's to power this one like I did my batch 3.  But oh well.  I can get a new RM750 for $99 so it's not that much.

I just hope this one performs as well as my batch 3.  That thing is great.

Each hash board pulls 400 watts so you should have at least 600w per blade using the 80% rule.
One 850w would not do on two boards.
I would do 850w+850w+750w for blades 1+2+3
I use 1000w for each of two boards. So three 1000w would cover two s7's.

Well, my batch 3 is running now on 2 HX850's.  And I haven't burned the house down yet...but since the overall draw is 1293 at the wall for this one, I think 3 is the way to go on it.

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

[FlensGold]

Are there any suggestions for replacement fans? Just in case one is broken or they are too loud?
Greetings,
me

[pj40]

Well, 4.825 btc lighter, I went ahead and bought batch 8 so I can finally replace my last S5 and S3.  I'm going to have to bite the bullet and buy another psu since I don't trust 2 hx850's to power this one like I did my batch 3.  But oh well.  I can get a new RM750 for $99 so it's not that much.

I just hope this one performs as well as my batch 3.  That thing is great.

Each hash board pulls 400 watts so you should have at least 600w per blade using the 80% rule.
One 850w would not do on two boards.
I would do 850w+850w+750w for blades 1+2+3
I use 1000w for each of two boards. So three 1000w would cover two s7's.

Well, my batch 3 is running now on 2 HX850's.  And I haven't burned the house down yet...but since the overall draw is 1293 at the wall for this one, I think 3 is the way to go on it.

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

No, I have 2 HX850's leftover from selling my S5's and those were bought last year sometime to each handle 2 S3's.  So I only need to buy a single RM750 for $100 to handle my needs.

[Biodom]

Are there any suggestions for replacement fans? Just in case one is broken or they are too loud?
Greetings,
me

Delta 12038. I doubt that you will find a quiet replacement. CFM has to be high to push air through all that heat sink metal.
I did fan mods on S5, but will not even try on S7. Too much chance of messing up a $1500-1800 piece of machinery.

[hodedowe]

No, I have 2 HX850's leftover from selling my S5's and those were bought last year sometime to each handle 2 S3's.  So I only need to buy a single RM750 for $100 to handle my needs.

Roger that. I missed that you had 2 already.

[Finksy]

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

Am I missing something? You'd spend $320 on a PSU to power 1 miner when you can get a server PSU for ~$200 that will run 2x of them?

[hodedowe]

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

Am I missing something? You'd spend $320 on a PSU to power 1 miner when you can get a server PSU for ~$200 that will run 2x of them?

Haha, Finksy, you got me there. My only reason for running the EVGA's is repurposing them into my computers at some point in the future and that 10 year warranty. If not for needing them to pull double duty I'd have gone with a server model.

[pj40]

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

Am I missing something? You'd spend $320 on a PSU to power 1 miner when you can get a server PSU for ~$200 that will run 2x of them?

Haha, Finksy, you got me there. My only reason for running the EVGA's is repurposing them into my computers at some point in the future and that 10 year warranty. If not for needing them to pull double duty I'd have gone with a server model.

Not to mention that not everyone has access to 240V circuits either...for a standard home outlet, the EVGA would work.

[philipma1957]

Some of it on ebay is probably NOT an intentional scam.
Just some hopeful newbs buying a machine that they don't really know how to handle, then messing it up and running to the protective cover of ebay (apart from the obvious OP case).
NOT as described-sure, after they burn it down by using LIVE connector (see Phil's posts about this problem) to controller after misinterpreting bitmain's ESL instructions (much better than my chinese, admittedly).

Yeah but in all the cases above the buyer didn't even ship the units back! I got screwed in this way on ebay years ago. I had an account with over 200 feedback, all positive, and had it since the site started back in the late 1990s.

Once ebay over tripled their fees they went downhill quick. You used to be able to ban people with under any number of feedback from bidding on your auctions which I always did on high value items $1,000+, at least over 10-20 feedback I remember for sure. Not anymore. You also used to be able to send negative feedback for buyers, which kept them in check. Not anymore. The buyers started to send me negative feedback for the stupidest things after that, basically ruining my perfect account. I had to kiss ass and give kick backs just to get the damn feedbacks removed, much like the feedback scammers on Yelp. They really get you by the balls and it sucks.

The final straw for me was when I got a charge back for a very large ticket item, and never even got the item shipped back to me. They went and took the money straight out of my bank account one day. It overdrafted me and made it so that my bills, rent, and everything that month were screwed up because I sold the item to free up the cash for bills and rent and the end of a hard month.

I hate ebay now when I used to love it and stand by it. I used to make almost all of my purchases and sales on it religiously. Not anymore. I'll use it for a few things if I have to but only as a last resort. I mostly only buy now as I can't take the risks associated with selling on that shit site. They really ruined a good thing.

I am a 12 or 13 year ebay member selling has become really hard to do.
I have won three chargebacks .
You can win chargebacks I am three for three. I have signed off on a ton of shit to win the chargebacks and I was fully covered that said I became too tired to do much selling on ebay as the clever bad buyer of your tech will beat you.
I could describe how to steal as a bad buyer but I do not want to teach any bad guys how to steal.

I do not want to get ripped off by a slick thief so I am very careful when I sell on ebay.

Don't sell a motherboard
Don't sell a good pc with lots of highend parts
Don't sell a gpu high end.
You can sell a sealed hdd under warranty.

As A seller of a lot of tech I used to sell ram overseas no can do as shipping became less secure.

I used to sell a ton of asic usb sticks. Did well with them.  Got some returns but still did well. I gave a lot of support to newbies.  But selling on ebay is really hard.  my ebay name is philipma957  you can go to the site and see I am 1500 with 0 negative.  but I have not sold an item in more then a month.

[philipma1957]

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

Am I missing something? You'd spend $320 on a PSU to power 1 miner when you can get a server PSU for ~$200 that will run 2x of them?

120 volt is an issue

and noise  is an issue.

so if you do not have 240 volt you get an evga 1300 or 1600

if noise is a problem you go evga.

I have two evga 1600 plat+tit -------------run two s-7's

I have two seasonic 1200 plat---------------run two avalon 6

I am waiting for your 2x 2000 psu  and I will use that to run my gear.

[Biodom]

I do not want to get ripped off by a slick thief so I am very careful when I sell on ebay.

Don't sell a motherboard
Don't sell a good pc with lots of highend parts
Don't sell a gpu high end.
You can sell a sealed hdd under warranty.

As A seller of a lot of tech I used to sell ram overseas no can do as shipping became less secure.

I used to sell a ton of asic usb sticks. Did well with them.  Got some returns but still did well. I gave a lot of support to newbies.  But selling on ebay is really hard.  my ebay name is philipma957  you can go to the site and see I am 1500 with 0 negative.  but I have not sold an item in more then a month.

they will get in trouble at some point. I also become more of a buyer than seller. I was selling my own family old iphones there, but last time two or three people bought the phone, then did not pay, so I had to go through circles (~one week) to get the listing fee back. Selling S3, S5 and SP20 was OK with one return that turned out to be fair, but i would not dare to sell S7 there until they are in $400-500 range and maybe not even then.

[yslyung]

forget about atx psu's if 1 wants to run s7's oc'ed. imo, the s7's are not built/meant for home mining anymore.

server psu's with adjustable voltage + 16 awg (or better) pcie cables is the way to go. yes 7 is enough to run an s7 but if you have 10 just plug them in & to be covered by the warranty.



those with high hw errors can try to just "save & apply" i call it a "soft/soft reboot" ? or a proper reboot then "save & apply"

temps over 70 deg C is high, do adjust fans. if fans or environment not helping, REDUCE those clocks. i think below 65 deg C is safe.

yes it is loud, yes it is hot so can't make too much complaints abt it, it's just the way it is.

fans are delta 12038, i have a few spares (ordered another bunch of them) tfc1212de & they're insanely powerful. i use them to cool down the server psu's & they're doing a great job, the noise is not as annoying as those 4cm high pitched fans.

specs :

Size: 120 * 120 * 38mm
Voltage: 12V
Current: 3.9A
Power: 46.8W
Speed: 4800RPM
Noise: 65DB
air volume: 190CFM
bearings: high density and high speed dual ball bearing

[AriesIV10]

Am I missing something? You'd spend $300 for three PSUs to run the blades but you can get an EVGA G2 1600 for about $320 and it'll power the whole thing with a 10 year warranty. I don't see why you wouldn't just go that route and have "one switch to rule them all".

Am I missing something? You'd spend $320 on a PSU to power 1 miner when you can get a server PSU for ~$200 that will run 2x of them?

Haha, Finksy, you got me there. My only reason for running the EVGA's is repurposing them into my computers at some point in the future and that 10 year warranty. If not for needing them to pull double duty I'd have gone with a server model.

Not to mention that not everyone has access to 240V circuits either...for a standard home outlet, the EVGA would work.

I have about 15 ANTEC Power Supply ATX12V 750 Power Supply EA-750 PLATINUMs for sale if you want a high quality PSU.  80 PLUS PLATINUM certified- Up to 93% efficient, to reduce your electricity bill. New about $135, used from me $90.    haha - I take Bitcoin!

[dmwardjr]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual.  It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

[aurel57]

Some of it on ebay is probably NOT an intentional scam.
Just some hopeful newbs buying a machine that they don't really know how to handle, then messing it up and running to the protective cover of ebay (apart from the obvious OP case).
NOT as described-sure, after they burn it down by using LIVE connector (see Phil's posts about this problem) to controller after misinterpreting bitmain's ESL instructions (much better than my chinese, admittedly).

Yeah but in all the cases above the buyer didn't even ship the units back! I got screwed in this way on ebay years ago. I had an account with over 200 feedback, all positive, and had it since the site started back in the late 1990s.

Once ebay over tripled their fees they went downhill quick. You used to be able to ban people with under any number of feedback from bidding on your auctions which I always did on high value items $1,000+, at least over 10-20 feedback I remember for sure. Not anymore. You also used to be able to send negative feedback for buyers, which kept them in check. Not anymore. The buyers started to send me negative feedback for the stupidest things after that, basically ruining my perfect account. I had to kiss ass and give kick backs just to get the damn feedbacks removed, much like the feedback scammers on Yelp. They really get you by the balls and it sucks.

The final straw for me was when I got a charge back for a very large ticket item, and never even got the item shipped back to me. They went and took the money straight out of my bank account one day. It overdrafted me and made it so that my bills, rent, and everything that month were screwed up because I sold the item to free up the cash for bills and rent and the end of a hard month.

I hate ebay now when I used to love it and stand by it. I used to make almost all of my purchases and sales on it religiously. Not anymore. I'll use it for a few things if I have to but only as a last resort. I mostly only buy now as I can't take the risks associated with selling on that shit site. They really ruined a good thing.

I am a 12 or 13 year ebay member selling has become really hard to do.
I have won three chargebacks .
You can win chargebacks I am three for three. I have signed off on a ton of shit to win the chargebacks and I was fully covered that said I became too tired to do much selling on ebay as the clever bad buyer of your tech will beat you.
I could describe how to steal as a bad buyer but I do not want to teach any bad guys how to steal.

I do not want to get ripped off by a slick thief so I am very careful when I sell on ebay.

Don't sell a motherboard
Don't sell a good pc with lots of highend parts
Don't sell a gpu high end.
You can sell a sealed hdd under warranty.

As A seller of a lot of tech I used to sell ram overseas no can do as shipping became less secure.

I used to sell a ton of asic usb sticks. Did well with them.  Got some returns but still did well. I gave a lot of support to newbies.  But selling on ebay is really hard.  my ebay name is philipma957  you can go to the site and see I am 1500 with 0 negative.  but I have not sold an item in more then a month.

Phil I got you beat on the length of time as a seller.  My EBay user ID is Playlikeachampion over 16 years. Sold a ton of Notre Dame football jerseys (why the name we have) when we started and then a lot of miners also. Cost got to be to high to keep doing it full time. You have me beat on the feedback as I am only in the 1300's.