1210 watts quoted "at the wall" - an EVGA 1300 would have about 10% power reserve, even my favorite Seasonic X1250s have some power in reserve.
Indeed. Some of the more common official peak ratings are in my PSU guide, although for 24/7 its still going to officially be the stated rating. That being said, I've ran many corsair PSUs past their limits in challenging conditions and they've done fine. 
Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 408. (Read 528055 times)
August 29, 2015, 02:30:48 PM
August 29, 2015, 02:23:11 PM
You need at least a 205V socket.
No, there are quite a few PS that will handle a S7 from the COMMON 15A 110V socket. The real issue is the number of PCI-E connectors, not the power draw.
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I suppose it's possible you could buy a very high end EGVA gold power supply and run it. The 1300 would be at max load so You'd want to go higher.
1210 watts quoted "at the wall" - an EVGA 1300 would have about 10% power reserve, even my favorite Seasonic X1250s have some power in reserve.
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The issue is you need 9 PCI plugins 3 for each board over the standard 2 for the S5.
10. one for the controller board. I don't know of any PS that has 9 connectors though, 8 and 10 yes.
Or you could do what I'm tenatively planning to do, run 2 S7 on 3 PS (though I might finally break down and buy some used server PS/breakout boards instead, since I figure I'll be running THESE units for quite a while).
August 29, 2015, 02:15:44 PM
Also makes those PACMiC contracts look like the sucker's dream as well. ROI on that is going to be HELL unless they upgrade their farms to S7's and then all those suckers just paid their capital investment cost at .666 bitcoin per 1 T/H. Always said that was a loan, Now it looks like a REALLY bad loan.
They already upgraded their farm to S7s or more likely "S7+".
That's where all those "used S5" came FROM, outdated units being upgraded.
I don't see PACMiC v3 being unprofitable - yet. Perhaps buying on in 2-3 months might be, but not right now.
August 29, 2015, 02:13:25 PM
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.
Unless bitcoin price goes up somewhat faster than difficulty, I'd say you're correct.
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I would say the PACMiC and S5+ was the sucker's call.
Half right.
I've been saying the S5+ was overpriced since it first showed up.
PACMiC though still should be profitable for a while, just don't believe the 25% APR claim as that doesn't appear to take difficulty increase into account at ALL.
August 29, 2015, 02:07:29 PM
wow this seems very powerful and also most power efficient miner in the market ...
but i dont think the price is acceptable though.
but i dont think the price is acceptable though.
A little over twice the TH I was anticipating, a bit LESS than twice the price. I just wish they didn't make the "per unit" such a HIGH bar.
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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.
My usual ROI calculation shows this will be very close to ROI at the halfing, presuming aquired in time to have it hashing on 30 September - with 6.7 cent/KWH power.
It will also be SOLIDLY profitable after the halfing for another year or so, presuming my estimate of average difficulty increase is on the high side or very close on the low side.
I'm estimating a HIGHER rate of increase than the past year to date has shown, BTW.
10 PCI-E connections is an issue for most if not ALL 1250/1300 watt ATX power supplies. IMO a BAD design call there, or a blatant attempt to get more sales of their own 1600 watt unit. On the other hand, I've been running "split" PS for a while anyway, just have to switch to running 3 PS per 2 units instead of 2 PS per 3 units. 8-O
Nothing new about the power up order - the S5 wants the hash boards to be powered up before the controller, or at the same time, already - or the hash board that is powered up late just don't hash most of the time. Doesn't seem to be highly timing critical, there's at least a couple seconds of leeway in there as the controller board boots up.
Coupons were promised - but at the large PRICE of one of these units, I hope the coupons have a LONG expiration date.
At the given power specs, the entire unit pulls a bit under 94 Amps out of all the +12v combined. Works out to a hair less than 30 amps per hashboard, probably in fact a hair under 30A (controller will soak at LEAST 4 amps JUST for the fans). In theory, you SHOULD be able to get away with 2 connectors per hashboard (24 amps EACH per connector based on the connector specs) *IF THEY ARE GANGED* as each would only pull 15 Amps if you use a pair which is WELL within the power capasity of the connector and even meets the specs for wiring on the common 18AWG most PS use to PCI-E connections.
If each connector feeds a seperate string, you need all 3 period - but they're only pulling about 10 amps each, so you could get away with running a hash board and the controller off the same wires with 2 connectors, and might be able to run 2 hashboards off a doubled connector per wire set.
16 AWG, don't sweat the wires at all no matter how you connect a doubled connector set of wires.
August 29, 2015, 01:59:57 PM
You can use molex2pci-e adaptors, but it will be a must to connect 3 pci-e each hashboard... I don't think i can make roi with that...
August 29, 2015, 01:46:43 PM
Pricey. Good form factor though. Can reuse the same PSUs that I had for S5, fairly straightforward 2x upgrade.
not 100% as there are 3 connectors per board plus you might need a separate PSU for controller (at least this what I read)
Seperate PSU for the controller and have to power it up last. Which means if it is off-site you're going to have to hope the goober messing with it follows your instructions for any resets. Or take a drive and do it yourself.
It says if you use a separate PSU then power it on last. You don't have to use a separate PSU.
Having 10 PCIe connectors might be a problem for those who use ATX PSUs. I think the venerable EVGA 1300 has only 8.
August 29, 2015, 01:37:36 PM
Interesting a little more power then I thought it would have. We knew it was coming though.
Looks like we will be having a lot of people watching the website now.
Looks like we will be having a lot of people watching the website now.
August 29, 2015, 01:35:39 PM
Pricey. Good form factor though. Can reuse the same PSUs that I had for S5, fairly straightforward 2x upgrade.
not 100% as there are 3 connectors per board plus you might need a separate PSU for controller (at least this what I read)
Seperate PSU for the controller and have to power it up last. Which means if it is off-site you're going to have to hope the goober messing with it follows your instructions for any resets. Or take a drive and do it yourself.
August 29, 2015, 01:34:02 PM
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.
I would say the PACMiC and S5+ was the sucker's call. This thing is like the HA-HA afterward. I mean they, Bitmain, knew they had that S7 right around the corner. Yet they throw up the S5+ at a ~$2300 premium and at .444 j/GH. Then boom what not but a week or two later drop the S7? Dirty pool.
Not really, efficiency is factored into the price:
s5+ - $0.298/ghs
s7 - $0.375/ghs
But then factor in cost of operation over 200 days 24/7 uptime at your electrical rate.
Electrical operational costs break out as follows.
You save 20.5% on the GH/s up front cost. (your numbers) But lose 44% per GH/s on the operational cost of the unit (the S7 winning), then include difficulty explosion. Which means you're going to want to keep your operational expenses low to recover from that much longer ROI that is going to result.
2.01 years to make up the cost differencial with power savings assuming equal hash rate.
You got darn good electricity rates compared to me, course moving it to a commercial setting should assist myself, as I'm home mining at the moment.
August 29, 2015, 01:33:25 PM
Pricey. Good form factor though. Can reuse the same PSUs that I had for S5, fairly straightforward 2x upgrade.
not 100% as there are 3 connectors per board plus you might need a separate PSU for controller (at least this is what I read)
August 29, 2015, 01:32:38 PM
Let's hope for some coupons
August 29, 2015, 01:30:10 PM
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.
I would say the PACMiC and S5+ was the sucker's call. This thing is like the HA-HA afterward. I mean they, Bitmain, knew they had that S7 right around the corner. Yet they throw up the S5+ at a ~$2300 premium and at .444 j/GH. Then boom what not but a week or two later drop the S7? Dirty pool.
Not really, efficiency is factored into the price:
s5+ - $0.298/ghs
s7 - $0.375/ghs
But then factor in cost of operation over 200 days 24/7 uptime at your electrical rate.
Electrical operational costs break out as follows.
You save 20.5% on the GH/s up front cost. (your numbers) But lose 44% per GH/s on the operational cost of the unit (the S7 winning), then include difficulty explosion. Which means you're going to want to keep your operational expenses low to recover from that much longer ROI that is going to result.
2.01 years to make up the cost differential with power savings assuming equal hash rate.
August 29, 2015, 01:28:13 PM
goo whaiting to be online so wee can order 
August 29, 2015, 01:25:49 PM
S5+ make a lot of sense now. S7 looks to have the same chassis, virtually the same chip layout and power connections, and same controller card.
Rich
Rich
Not sure if it's same controller, but looks pretty similar. Anyone else pay attention to the "extra" fan and board slots on the controller? I don't even want to THINK about the price on an S7+ but it looks like it will be a trivial design to do.
The picture is identical to that shown in the S5+ (Like the same picture) and has S5+ on the silk screen. The "value" of this to me is that if it's correct, as opposed to Bitmain Marketing just using the same picture, then you will be able to use an S5 controller on an S7 hash board.
Rich
August 29, 2015, 01:25:28 PM
Pricey. Good form factor though. Can reuse the same PSUs that I had for S5, fairly straightforward 2x upgrade.
August 29, 2015, 01:17:34 PM
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.
I would say the PACMiC and S5+ was the sucker's call. This thing is like the HA-HA afterward. I mean they, Bitmain, knew they had that S7 right around the corner. Yet they throw up the S5+ at a ~$2300 premium and at .444 j/GH. Then boom what not but a week or two later drop the S7? Dirty pool.
Not really, efficiency is factored into the price:
s5+ - $0.298/ghs
s7 - $0.375/ghs
But then factor in cost of operation over 200 days 24/7 uptime at your electrical rate.
Electrical operational costs break out as follows.
You save 20.5% on the GH/s up front cost. (your numbers) But lose 44% per GH/s on the operational cost of the unit (the S7 winning), then include difficulty explosion. Which means you're going to want to keep your operational expenses low to recover from that much longer ROI that is going to result.
August 29, 2015, 01:14:19 PM
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.
It is all situation dependent but for most (including me) I could have made more money buying coin all year and then selling at $300 when it was in that range. However that would not be as fun, as supportive of the network, and I would have spent my money playing with some other idealistic electronic related idea so it may as well be the one which has hope to actually make a difference.
It isn't all about the money for a great number of the people posting here.
However, we still care about the money and the difficulty flatness over this year showed it is possible, but the power rate and uptime will determine such.
I agree the price is high, but the early adopters do get to start on ROI the soonest. So if you are going to roll the dice, roll them now. By the time people wait for the price to drop the difficulty is going to seriously pop.
Don't encourage people to buy this, it's just plain wrong.
August 29, 2015, 01:14:09 PM
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.
I would say the PACMiC and S5+ was the sucker's call. This thing is like the HA-HA afterward. I mean they, Bitmain, knew they had that S7 right around the corner. Yet they throw up the S5+ at a ~$2300 premium and at .444 j/GH. Then boom what not but a week or two later drop the S7? Dirty pool.
Not really, efficiency is factored into the price:
s5+ - $0.298/ghs
s7 - $0.375/ghs
August 29, 2015, 01:13:19 PM
S5+ make a lot of sense now. S7 looks to have the same chassis, virtually the same chip layout and power connections, and same controller card.
Rich
Rich
Not sure if it's same controller, but looks pretty similar. Anyone else pay attention to the "extra" fan and board slots on the controller? I don't even want to THINK about the price on an S7+ but it looks like it will be a trivial design to do.
Yeah but think about the premium in the home designed S7+. You'd be spending 1825 x3 ($5475) if the board is the same and can run the units in the same way. + the PSU costs. That would give you 14.58 TH/s But then again looking at the price on the S5+ hey that's about what two of them cost if not less, and you wouldn't get the power savings of .25j/GH
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