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Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 121. (Read 527798 times)

legendary
Activity: 1302
Merit: 1068
Well i could grab a one IBM kit from Finksy, that would work for 2 S7 too. Still the problem remain getting access to 240v. Beside my oven, i don't see how. And on 120v, the S7 is a big piece.

I would be much happier if the S7 was a 2 board thing. 800-1000w would be very manageable and it would be easier to OC.

I don't want to tell you what to do in your apartment; in terms of getting access to 240 volts.  I would recommend talking to an electrician or the maintenance person for the apartments to see about access to 240 volts.  You might be surprised to find the maintenance person will be cooperative and help.

Not allowed to do modification here because of assurance thing stuff. There's nearly no 240v anywhere here, either. I'm guessing we're not allowed to because of set of rules and regulation, limits and whatnot.

I live in an multi complex apartment that is owned by a huge company, so their set of rules are pretty strict. Signed a 4 page full of rules and regulation to follow when i got here, lol.

I'll see for when i move maybe this summer.

Are 240v outlet all standard? If i get a 240v big cord extension and maybe some sort of PDU, since the oven socket is 40A, then maybe it would be easy to make use of it on real 240v when i move?
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
Well i could grab a one IBM kit from Finksy, that would work for 2 S7 too. Still the problem remain getting access to 240v. Beside my oven, i don't see how. And on 120v, the S7 is a big piece.

I would be much happier if the S7 was a 2 board thing. 800-1000w would be very manageable and it would be easier to OC.

I don't want to tell you what to do in your apartment; in terms of getting access to 240 volts.  I would recommend talking to an electrician or the maintenance person for the apartments to see about access to 240 volts.  You might be surprised to find the maintenance person will be cooperative and help.  Especially, if you provide the wiring, breaker and outlet; along with some extra cash.
legendary
Activity: 1302
Merit: 1068
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

GET THIS:  https://bitcointalksearch.org/topic/gauging-interest-in-a-s5-3xs7-specific-power-supply-breakout-board-1178099

WITH 2 OF THESE:  http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XIBM+2000+BB.TRS0&_nkw=IBM+2000+BB&_sacat=0

He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.
Yeah i'm in an appartment so i don't have a lot of options when it comes down to 240v.

Well, i could like, unplug my oven and find a way to bring that 240v all the way to the living room window, then with 40A available i could get those. Is that the two PSU you plug with one jabberwock board and you can control voltage and power like 3 S7?

That is correct.  You could power 3 x S7's IF they were about 1333 watts each or less.  Others here would be able to give you advice as to whether it's okay to do that or not.  I say this cause 3 x S7's would be pushing the 2 x IBM 2000 BB's to their limits.  I have little experience with the IBM 2000 BB's.  I'm about to get a couple of them to go along with a new J4bberwock breakout board for them.  All of my PSU's are IBM 2880's with J4bberwock breakout boards.

Well i could grab a one IBM kit from Finksy, that would work for 2 S7 too. Still the problem remain getting access to 240v. Beside my oven, i don't see how. And on 120v, the S7 is a big piece.

I would be much happier if the S7 was a 2 board thing. 800-1000w would be very manageable and it would be easier to OC.
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
At 700MHz they're pretty much tapped out, and overclocking is not an option until we figure out how to control voltage. My OG S7s run at 6TH/s in comparison with overclocking.

I totally agree with you.  I'm coming close to making the decision to go ahead and under clock these back to 600 MHz from the 700 MHz factory setting.  If I'm not mistaken, the batch 6 (135 chips) were clocked at 600 MHz and hashed at 4.0 TH/s?  I'm thinking about treating the new 135 chip rigs as batch 6 and under clock all of them to 600 MHz for longevity.
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader


Went ahead and bought some more S7s Batch 8.  These are my first Batch 8.  I am hoping these will be good for the long run!

i received 2 b8 yesterday & each of them messed up.

1 dead board 0 temps with lovely dashes, nothing could revive them. shows 30 instead of 45 chips. if test with single board it shows 0 temp & 48 magical chips but do not hash.

the other had a almost dead board with low hashrate, high hw error, low temp (5 or more C) lower than other 2 boards. once i disconnected the problematic board the other 2 works perfectly no issues.

i sent 1 board from b5 last week n half ago. bmt just received it.

this is badddddddd

Sorry to hear that yslyung.  It sounds like you have been a bit more unfortunate than most.  Hopefully, things can only get better...  Grin
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

GET THIS:  https://bitcointalksearch.org/topic/gauging-interest-in-a-s5-3xs7-specific-power-supply-breakout-board-1178099

WITH 2 OF THESE:  http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XIBM+2000+BB.TRS0&_nkw=IBM+2000+BB&_sacat=0

He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.
Yeah i'm in an appartment so i don't have a lot of options when it comes down to 240v.

Well, i could like, unplug my oven and find a way to bring that 240v all the way to the living room window, then with 40A available i could get those. Is that the two PSU you plug with one jabberwock board and you can control voltage and power like 3 S7?

That is correct.  You could power 3 x S7's IF they were about 1333 watts each or less.  Others here would be able to give you advice as to whether it's okay to do that or not.  I say this cause 3 x S7's would be pushing the 2 x IBM 2000 BB's to their limits.  I have little experience with the IBM 2000 BB's.  I'm about to get a couple of them to go along with a new J4bberwock breakout board for them.  All of my PSU's are IBM 2880's with J4bberwock breakout boards.
legendary
Activity: 1500
Merit: 1002
Mine Mine Mine


Went ahead and bought some more S7s Batch 8.  These are my first Batch 8.  I am hoping these will be good for the long run!

i received 2 b8 yesterday & each of them messed up.

1 dead board 0 temps with lovely dashes, nothing could revive them. shows 30 instead of 45 chips. if test with single board it shows 0 temp & 48 magical chips but do not hash.

the other had a almost dead board with low hashrate, high hw error, low temp (5 or more C) lower than other 2 boards. once i disconnected the problematic board the other 2 works perfectly no issues.

i sent 1 board from b5 last week n half ago. bmt just received it.

this is badddddddd
legendary
Activity: 3892
Merit: 4331
Oh, well, even early B1 pulls just 1280-1290 at the wall with EVGA 1300 (at 120V), hashing at above B8 (4.83Th).
B5 does even better and B7 does 1345W at the wall with the same EVGA, which is not even a plat PSU, for 5.1 TH
oldies, but goodies, relatively speaking.

I am just saying...it went a bit downhill if you think about it...

It certainly did. Bitmain figured they'd squeeze the last drops out of the S7s by removing chips and applying a factory overclock to them to give us approximately the same speed. That brings efficiency and reliability down. I'm a victim of the lower reliability, and it seems I'm not alone. B8 seems to have a higher failure rate so far.

At 700MHz they're pretty much tapped out, and overclocking is not an option until we figure out how to control voltage. My OG S7s run at 6TH/s in comparison with overclocking.

yeah, but you lost me there a bit. What's OG? Original Gangsta? Overwhelmingly Good?
legendary
Activity: 1302
Merit: 1068
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

GET THIS:  https://bitcointalksearch.org/topic/gauging-interest-in-a-s5-3xs7-specific-power-supply-breakout-board-1178099

WITH 2 OF THESE:  http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XIBM+2000+BB.TRS0&_nkw=IBM+2000+BB&_sacat=0

He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.
Yeah i'm in an appartment so i don't have a lot of options when it comes down to 240v.

Well, i could like, unplug my oven and find a way to bring that 240v all the way to the living room window, then with 40A available i could get those. Is that the two PSU you plug with one jabberwock board and you can control voltage and power like 3 S7?
legendary
Activity: 1596
Merit: 1000
Oh, well, even early B1 pulls just 1280-1290 at the wall with EVGA 1300 (at 120V), hashing at above B8 (4.83Th).
B5 does even better and B7 does 1345W at the wall with the same EVGA, which is not even a plat PSU, for 5.1 TH
oldies, but goodies, relatively speaking.

I am just saying...it went a bit downhill if you think about it...

It certainly did. Bitmain figured they'd squeeze the last drops out of the S7s by removing chips and applying a factory overclock to them to give us approximately the same speed. That brings efficiency and reliability down. I'm a victim of the lower reliability, and it seems I'm not alone. B8 seems to have a higher failure rate so far.

At 700MHz they're pretty much tapped out, and overclocking is not an option until we figure out how to control voltage. My OG S7s run at 6TH/s in comparison with overclocking.
legendary
Activity: 1596
Merit: 1000
He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.

Thanks Prelude...

Yeah, I saw that after reading it again and edited my post.

The advice is still good, those 2kW PSUs are probably the best way to go considering you can control the noise by choosing appropriate fans. Just need to be able to tap in to 200+ volts.
legendary
Activity: 3892
Merit: 4331
Oh, well, even early B1 pulls just 1280-1290 at the wall with EVGA 1300 (at 120V), hashing at above B8 (4.83Th).
B5 does even better and B7 does 1345W at the wall with the same EVGA, which is not even a plat PSU, for 5.1 TH
oldies, but goodies, relatively speaking.

I am just saying...it went a bit downhill if you think about it...
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.

Thanks Prelude...

Yeah, I saw that after reading it again and edited my post.
legendary
Activity: 1596
Merit: 1000
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

GET THIS:  https://bitcointalksearch.org/topic/gauging-interest-in-a-s5-3xs7-specific-power-supply-breakout-board-1178099

WITH 2 OF THESE:  http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XIBM+2000+BB.TRS0&_nkw=IBM+2000+BB&_sacat=0

He's limited to 120v I believe, which limits him to high end ATX if he wants over ~1000w or so.
legendary
Activity: 1596
Merit: 1000
My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz.

DAAAAAAAMN...  That's more than I anticipated.  What was your RPM's on the fans and temps please?

The fans would have been approximately 3k RPM with ~60-65c temps at the time.

Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

You won't find a 1600w server PSU that runs on 120v, much less a quiet one. I'd consider trading you my platinum unit (Antec HCP 1300w, see review on jonnyguru) for your 2 server PSUs.
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.

GET THIS:  https://bitcointalksearch.org/topic/gauging-interest-in-a-s5-3xs7-specific-power-supply-breakout-board-1178099

WITH 2 OF THESE:  http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XIBM+2000+BB.TRS0&_nkw=IBM+2000+BB&_sacat=0

EDIT:  My bad... I see now you mentioned 120V
legendary
Activity: 1302
Merit: 1068
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.

Yeah, the 240v do get 2%~ more efficiency. Thanks for the number, but i'm not sure i want to buy a 400$ ATX PSU to get 94% on 120v.

Maybe i could find some quiet 1600w sever PSU that is quiet?

The two 1100w PSU i have would not work very well here.
legendary
Activity: 1302
Merit: 1318
Technical Analyst/Trader
My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz.

DAAAAAAAMN...  That's more than I anticipated.  What was your RPM's on the fans and temps please?
legendary
Activity: 1596
Merit: 1000
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

My B8 pulled 1362w from the wall with a platinum PSU running on 240v at 700MHz. Would be closer to 1400w if running on 120v instead due to PSU efficiency loss on 120v.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
Has anyone received B8 and measured the power consumption at the wall yet? 1300w + 10% seem a bit on the high side, completely capping a 15a120v breaker and leaving no headroom for OC or anything.

Per my PDU, it takes 6 Amp, 240V. Not sure how accurate it is, prior to adding a B8, PDU was showing 17amp.

Well that would be right about 90% efficiency for 1300W(DC)/1440W(at the wall). Some reading with a meter would be nice but even in the best case scenario, i think that is very annoying for a 120V user. Specially since from 1300w to 1500-1600w ATX psu, the price literally double.

I am using Bitmain PSU which is supposed to be 93.8% efficient, apparently not.

Might be but saying 6 Amp is rather inaccurate since each amp there is 240watts. The way you gave round number make it sound like if its 5.8AMP it says 6 Amp, hence the need for a reading with a wattmeter. Not sure how your PDU works.

My pdu does .100 so 5.9 then 6.0. So 6.0 could be 1440 or 1416 or 1464 .
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