Author

Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 398. (Read 528055 times)

legendary
Activity: 3892
Merit: 4331
I find this conclusion to sound accurate and actually quite funny.

You will never get your bitcoin back if you buy one of these at this price. It isn't even close. This is for suckers or those with stolen electricity.

not true since:

1. you don't know what bitcoin price would be.
2. you don't know what bitmain's price would be going forward.
3. you don't know what aftermarket price would be in early October or November

the combination of these three parameters makes it much less certain than you think.
BTW, people were buying S5+
legendary
Activity: 1148
Merit: 1018
It's about time -- All merrit accepted !!!
I find this conclusion to sound accurate and actually quite funny.

You will never get your bitcoin back if you buy one of these at this price. It isn't even close. This is for suckers or those with stolen electricity.
legendary
Activity: 3892
Merit: 4331

40a on 12v is perfect. the 2 * 6pins is worrying as 200w/6pin might be a bit too much...    this is evga so cables should be top notch...
might be ok for 1 blade, but for the blade an controller combo this is better http://www.newegg.com/Product/Product.aspx?Item=N82E16817438049

hint: research the 1300w type!
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N5238

this could run the whole thing? would i need additonal cables or anything?

it has 6 jacks 4 cables have a single plug and 2 cables have  2x plugs  so you get 8 to plug into the s-7

it can just do the job. but it has less cables then bitmaintech wants you to use.

They are afraid of people using cheap PSU's/cords and make sure to warn 3 all over.  I suspect they pack a paper with each S7 warning of all the different things and an email.

If you know what your doing and quality PSU 2 should be able to do it.... but if any issues if you tell bitmain you used 2 chances are they pull warranty.  I'm not saying to do it but I have a feeling some will use two and just not mention that to bitmain if they need RMA.

Sidehack also had a good idea.  If you use a proper splitter (not a cheap to small of wire one) bitmain did not say no on that... but they could consider it improper powering as it's vague.  So someone might ask on proper guage splitters what bitmains official stance is.

I used good splitters on evga single cords (NOT those that are already split!) on S3 and it was working like a charm.
S7-we will know in a month or so.
legendary
Activity: 1456
Merit: 1000

40a on 12v is perfect. the 2 * 6pins is worrying as 200w/6pin might be a bit too much...    this is evga so cables should be top notch...
might be ok for 1 blade, but for the blade an controller combo this is better http://www.newegg.com/Product/Product.aspx?Item=N82E16817438049

hint: research the 1300w type!
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N5238

this could run the whole thing? would i need additonal cables or anything?

it has 6 jacks 4 cables have a single plug and 2 cables have  2x plugs  so you get 8 to plug into the s-7

it can just do the job. but it has less cables then bitmaintech wants you to use.

They are afraid of people using cheap PSU's/cords and make sure to warn 3 all over.  I suspect they pack a paper with each S7 warning of all the different things and an email.

If you know what your doing and quality PSU 2 should be able to do it.... but if any issues if you tell bitmain you used 2 chances are they pull warranty.  I'm not saying to do it but I have a feeling some will use two and just not mention that to bitmain if they need RMA.

Sidehack also had a good idea.  If you use a proper splitter (not a cheap to small of wire one) bitmain did not say no on that... but they could consider it improper powering as it's vague.  So someone might ask on proper guage splitters what bitmains official stance is.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'

40a on 12v is perfect. the 2 * 6pins is worrying as 200w/6pin might be a bit too much...    this is evga so cables should be top notch...
might be ok for 1 blade, but for the blade an controller combo this is better http://www.newegg.com/Product/Product.aspx?Item=N82E16817438049

hint: research the 1300w type!
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N5238

this could run the whole thing? would i need additonal cables or anything?

it has 6 jacks 4 cables have a single plug and 2 cables have  2x plugs  so you get 8 to plug into the s-7

it can just do the job. but it has less cables then bitmaintech wants you to use.
legendary
Activity: 1456
Merit: 1000
2x 51.3dB for fans 2x 30dB for PSU so ~55dB.
I think you may be in error with this, as it appears the S7's are using the S5 fans, and the S5 fans are quite loud in the ~70dB range.

If I had any reason to think the S7's were capable of running at ~55dB, I probably would have purchased one to replace a bank of older miners, as that would be quieter than the S5's.

I believe they are using S5+ fans not regular S5 fan's.  And I could be wrong on that.

But I think they kept S5+ fans.
legendary
Activity: 1652
Merit: 1067
Christian Antkow
2x 51.3dB for fans 2x 30dB for PSU so ~55dB.
I think you may be in error with this, as it appears the S7's are using the S5 fans, and the S5 fans are quite loud in the ~70dB range.

If I had any reason to think the S7's were capable of running at ~55dB, I probably would have purchased one to replace a bank of older miners, as that would be quieter than the S5's.
hero member
Activity: 818
Merit: 1006
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N5238

this could run the whole thing? would i need additonal cables or anything?

Wow, $220 for a PSU? Host with us and we can get you a PSU for $80. Our PSUs are voltage adjustable from about 11.8V to 12.8V to allow for either improved overclocking capability or improved performance.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
Batch 1 hasn't sold out yet. Not that surprising given the price.

This is definitely not a repeat of the S3 (the last Antminer that I bought). The first two batches of that model sold out in hours.

It's too bad they didn't also offer a less dense model for a lower price. People are champing at the bit for new hardware, but can't handle the entry wound of the S7 price.

I disagree price is not the issue. 

This miner will be louder then the s-5  and if you are running it in your home your wife or girlfriend or mom or neighbor will be wanting to toss you a beating.

 My max power that I can do is 11k

 So I could run 9  in my house during the winter and my wife will be on the news as bitcoiner's wife  kills husband with a miner in his sleep!
legendary
Activity: 1150
Merit: 1004
Batch 1 hasn't sold out yet. Not that surprising given the price.

This is definitely not a repeat of the S3 (the last Antminer that I bought). The first two batches of that model sold out in hours.

It's too bad they didn't also offer a less dense model for a lower price. People are champing at the bit for new hardware, but can't handle the entry wound of the S7 price.
legendary
Activity: 1150
Merit: 1004
I'd love a couple of coupons too please!

I'm a really nice and deserving guy Wink

There's got to be people out there who bought S5's that have no intention of buying an S7. Spread the love, please!

PM me and I'll give you my Bitmain ID, and my undying devotion Wink
legendary
Activity: 1274
Merit: 1000
Personal text my ass....
It's the J/GH that's the important part.

Yes the cost is up right now.  But if you have good electrical rates, and the 205 outlet needed to run the thing, and are only paying 1/4th a watt per GH then it seems like a pretty good deal.

I have 9 cents electricity. I calculated ROI for almost 250 days, but then we'll see block halving. I think ROI is not possible with my electricity fee considering mining difficulty.

I think even with free electricity and the block cutting in half no one will ever get their money back on these. Common sense on this one.
sr. member
Activity: 429
Merit: 250
can I get one coupon please? I give hugs!
member
Activity: 99
Merit: 10
Can i get two coupons please ?

ID: HerbPean

One more to go ! ;-)

Can i get 1 coupon please!
legendary
Activity: 1638
Merit: 1005
Can i get two coupons please ?

ID: HerbPean

One more to go ! ;-)
sr. member
Activity: 266
Merit: 250
Infected Mushroom
Yes. It could be very loud.
please elaborate  Huh

imho, you don't need to be rocket scientist to imagine, how noisy it will be. based on description in OP, it is using 12038 fan, well let's google:

http://www.fantech-electron.com/enu/product/view/dc-fan-12038.htm

so, based on web, it will be at least 40dB per fan and there will be 2 of them + fans from PSU (you will need one very big, or 2 just big) + noise from airflow (because miner itself is some tube, one side will suck the air and second one will blow it)

let's assume, that they will use the most powerful 12V fan with 2900rpm. let's calculate:

https://www.noisemeters.com/apps/db-calculator.asp

2x 51.3dB for fans 2x 30dB for PSU so ~55dB.



55 dB is a dream. I am getting over 70 dB from a single s5. If its really 55 dB I would think for a second to order one unit for fun.
legendary
Activity: 3892
Merit: 4331
Yes. It could be very loud.
please elaborate  Huh

imho, you don't need to be rocket scientist to imagine, how noisy it will be. based on description in OP, it is using 12038 fan, well let's google:

http://www.fantech-electron.com/enu/product/view/dc-fan-12038.htm

so, based on web, it will be at least 40dB per fan and there will be 2 of them + fans from PSU (you will need one very big, or 2 just big) + noise from airflow (because miner itself is some tube, one side will suck the air and second one will blow it)

let's assume, that they will use the most powerful 12V fan with 2900rpm. let's calculate:

https://www.noisemeters.com/apps/db-calculator.asp

2x 51.3dB for fans 2x 30dB for PSU so ~55dB.



55dB is NOTHING if true.
S5 was 70-72dB
BTW, you are a little off with 2900rpm, I think S7 comes with 4200rpm fans
legendary
Activity: 1036
Merit: 1001
/dev/null
Yes. It could be very loud.
please elaborate  Huh

imho, you don't need to be rocket scientist to imagine, how noisy it will be. based on description in OP, it is using 12038 fan, well let's google:

http://www.fantech-electron.com/enu/product/view/dc-fan-12038.htm

so, based on web, it will be at least 40dB per fan and there will be 2 of them + fans from PSU (you will need one very big, or 2 just big) + noise from airflow (because miner itself is some tube, one side will suck the air and second one will blow it)

let's assume, that they will use the most powerful 12V fan with 2900rpm. let's calculate:

https://www.noisemeters.com/apps/db-calculator.asp

2x 51.3dB for fans 2x 30dB for PSU so ~55dB.

legendary
Activity: 1498
Merit: 1030

1300 watts seems a bit light to me when you consdier that many say you should calculate at 90% wattage availability. So 1300* .90 = 1170 watts.
Also, the advantage of using 3 smaller PSUs is you can use three different circuits as many of us don't have the capacity to run a large PSU on one circuit.


 15 amp 110 is the DEFAULT, that's good for up to a 1600 watt PS based on what companies are actually making.

 Also, the "1210 watt" figure Bitmain quotes is AT THE WALL with a 93% efficiency PS.
 The actual draw FROM the PS should be about 1125 watts - the EVGA commonly used should have about 15% in reserve, the X1250s I use would have a bit over 10%.



Quote

I wonder why no Canuck has set up a huge farm near James bay in Quebec.


 I'm presuming that's a reference to cheap hydropower
 Perhaps someone has done so but just doesn't choose to advertise?
 IIRC some of the Chinese farm locations I've seen mentioned are in "near the Himalayas" areas, those would tend to stay pretty cool most of the time.


Quote

I bought 0.5w/GH hardware for 1BTC/TH over 6 months ago


 You got S5s for around $250?
 MUST be nice to have had the money to take advantage of the price war back then.

 (yeah, I know BTC had a small roller-coaster ride this year though mostly down).

 Hint - BTC pricing changed since then, 2 weeks ago you couldn't find ANY .5W/GH machine much under about 1.5BTC per TH unless you got VERY lucky and a lot of them were running very close to 2 BTC/TH even USED.
 Also, Spondoolies got out of the market entirely so Bitmain lost pretty much any competition on new units (unless you wanted low-efficiency stuff like Avalon 4.x).
Jump to: