Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 379. (Read 527816 times)

you should be fine with both 1 and 2.

a 15 amp circuit should be able to do 1500 watts 24/7/365

you should be fine with both 1 and 2.

a 15 amp circuit should be able to do 1500 watts 24/7/365

There seem to be many smart people in this forum.  Can someone verify my thoughts?

Situation 1:
I would like to confirm this: I have many 750W Platinum PSUs and would like to use 3 750W PSUs (one for each hashboard) to run 1 S7.  I do realize that it would only take a 500W PSU, but I have 750W PSUs.

Situation 2:
Next: there are 3 hashboards at 400W each making the total for ~1210W.  Utilizing VA=W, this would come to 3.6A each hashboard x 3 hashboards = 10.8A for the entire S7.  This would keep it under the 80% utilization of a 15A circuit.  Does this sound correct?

There seem to be many smart people in this forum.  Can someone verify my thoughts?

Situation 1:
I would like to confirm this: I have many 750W Platinum PSUs and would like to use 3 750W PSUs (one for each hashboard) to run 1 S7.  I do realize that it would only take a 500W PSU, but I have 750W PSUs.

Situation 2:
Next: there are 3 hashboards at 400W each making the total for ~1210W.  Utilizing VA=W, this would come to 3.6A each hashboard x 3 hashboards = 10.8A for the entire S7.  This would keep it under the 80% utilization of a 15A circuit.  Does this sound correct?

OK, just made one last RoI calculation estimate, and it appears there is no way I'll ever get RoI on a S7.
 (my move plans took a bit of a hit, looking like next summer now instead of the end of Nov I was originally aiming for).
.....

 

.....

 S7 is a vastly better product, but unless you have VERY cheap electric you won't RoI an S7 unless bitcoin price jumps a LOT sometime in the next 6-8 months, or difficulty increased flatten back out to even LESS than the 1.6% they averaged during the first half of this year about immediately.

Bitmain gave me my coupons for free.  I used all of them already.

Do you really believe that Bitmain  provides S7 coupons for free ?

OK, just made one last RoI calculation estimate, and it appears there is no way I'll ever get RoI on a S7.
 (my move plans took a bit of a hit, looking like next summer now instead of the end of Nov I was originally aiming for).

 I have 2 $100 coupons available, .1 BTC each or best offer.

 

 Not quite right. The hashboards eat less than that, then the PS (which is quoted as 93% efficiency) adds a little to the load. *IF* you are using a PS with the same efficiency, then your calculation would be correct and the final current draw from a 110V circuit would be in the ballpark you cite (exact amount would depend on the voltage at the input to YOUR powersupply, 117 VAC is a NOMINAL voltage it can commonly range 110-120 volts and sometimes down to 100ish).

 In any event, any combination of Gold or better efficiency power supplies running a single S7 and nothing else should easily stay under 12A total current draw.

 Unless your ambient tempertature is VERY high, you'll have plenty of reserve on a common 15 Amp US "117 VAC" outlet - I forget offhand but I think the National Electric Code cites current capasities at something like 50c before requiring derating, but would have to go back and reread it to be sure.



 Actually, it's BEP per your stated method of calculation of the S7 at release was a little over 8 months, NOT 1 year.
 I came up with an estimate that it would be 4 BTC before release based on a 250 day BEP, but that was assuming 2 hash boards 2 strings and therefore a little less than half the TH at a little less than half the power at a BTC price when I made the estimate of a hair more than the release date - given the actual figures, it should have been released at more like 8.5 BTC for a 250 day BEP. (Bitmain appears to assume appx. 10 cent / KWH on their version of your BEP calculation).

 I have ZERO CLUE where you are comming up with that "1 year" figure for it, that's not even close given your base assumptions on the calculation unless your electric rate used is quite a bit HIGHER than 10 cents / KWH.



 Standard Oil did quite a few times in many circumstances during it's "monopolistic" days.



 Lktec actually announced THEIR upcomming 5TH miner before the S7 or the BM1385 was announced.
 On the other hand, it seems that a lot of the folks that were part of the last 2 gens of ASIC competition have decided to quit selling to end users.
 In some cases like KnC, NO BIG LOSS. In others, sad but not suprising as Bitcoin Mining has hit the big times and greatly gone industrial since then.

 Welcome to the situation of the "family farmer" over the course of this past century, but like most "tech" related thing the generations are a LOT shorter and time goes by a lot faster.
 If you want to compete with the bit industrial farms, you have to be SMART and you have to play the angles, not just assume you can keep going like Granddad did and still make a living with inefficient methodology.

What is BEP???

To expensive, need more disc...

When S2 release it has less than 3 month BEP (include tax)
When S3 release it has less than 6 month BEP (include tax)
When S5 release it has less than 9 month BEP (include tax)
When S7 release it has more than 12 months BEP (include tax)

*All without incr of diff