Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 261. (Read 528055 times)

My only concerns with that PSU is the following:

It says it has 8 x PCI-e ports.  You need 10 x PCI-e ports OR you need at least 2 PCI-e cords provided with the PSU that have splitters.  Which will provide the 2 additional PCI-e cords needed to power all 9 ports on the 3 blades and the 1 port for the controller.  It is hard for me to tell by the photos if at least 2 cords have the splitter [Extension with addition 6 pin PCI-e male connectors] on them.

That's my problem.  I can't justify going up to 240, with the uncertainty on the halvening next year, I'm just hoping to break even on this with my lower winter electric rates and we'll see what happens to the price next June/July.  Either efficiency will have to greatly increase, or pool hash will have to drop unless people don't mind losing money mining at higher and higher difficulties.

people are being surprisingly nonchalant about it.
...I woke up at 3am this morning and at first could not figure out why.
then i heard a tiny noise coming from s7 (much less than s5)
;run to it, Internet is down ("internet not working well" situation)
miner is still doing something and fans are on very low, and air is coming out quite hot.
Thankfully, I had a Vornado fan blowing into intake for such situations and to help with cooling, so no critical overheat occurred.
Internet came back within 2-3 min and it was back to hashing.

all i am saying: beware and try to adapt. i can practically guarantee that it WILL happen in large hosting because usually service guarantees just 98% uptime.
If service loses internet, but power is on....

S5 and S7 are really nothing alike on power.  I mean just on ports alone were talking 4 PCIe ports compared to 9 + 1 PCIe ports.     I personally would not pick that raidmax if your talking about powering the S7.

If you don't use all 9 power ports you will void warranty, and 1 for controller.   More and more home and hobby miners I think you will see getting 240.

Your are absolutely right

I found 1500w PSU here. http://www.frys.com/product/7590536?site=sr:SEARCH:MAIN_RSLT_PG   for S7.

I think one should be enough with 120v wall socket outlet in America. Even overclocking S7 shouldn't be a issue.

I edited my previous post to say if the HX850 does not have enough PCI-e ports, you will need 3 x HX850's.  That was the reason I bought the AX860.  It has 8 x PCI-e ports and it's platinum rated.  I use 240 Volts now for IBM 2880W PSU's that are platinum rated with breakout boards that have 22 x PCI-e ports.

Batch 2 order from Sept 29th shipped 

But I believe they only come with 4 PCI-e connectors each, and I need 9+1 to power it up, right?

So all this tells me, that I shouldn't try mining with S7 at my home with APW3-12-1600 PSU.

What if I buy this type of PSU http://www.frys.com/product/6806106?site=sr:SEARCH:MAIN_RSLT_PG  

I think lot of other people are doing same. See here https://www.youtube.com/watch?v=uNbaZwqdPAc

He is using http://www.newegg.com/Product/Product.aspx?Item=N82E16817152044 PSU with S5 Miner.

However, I can't find power consumption for S5 whether it's 120 or 240V

You would be okay with 2 of those.  Don't need 3.  The only way you would need 3 is if the HX850 did not have a sufficient number of PCI-e connections.  I'm not familiar with how many PCI-e connections the HX850 has.  I have a lot of AX860's laying around.  They have 8 PCI-e Connections on the back of the PSU.

Make sure you use all 3 PCI-e cords on each blade because the gauge wire for the PCI-e cords provided with the HX850 PSU's are small compared to others that are custom made.  If you had custom made PCI-e cords that are 16 gauge like mine, you would be fine with 2 PCI-e cords for each blade.  That's my opinion.

I used 2 Corsair AX860 Platinum PSU's to power one S7.  It works fine.  I did have to do a soft reboot after initial power up to get it to hash at 4.8 TH/s with low HW errors.

So just to verify, wil I be ok with 3 Corsair HX850's to power a single S7?  One PSU per blade with the third also powering the board.  I have these PSU's sitting around after selling off the 3 S5's they were powering.

I would use one with more than 1200 watts.  The S7 is rated at 1210 watts @ 600 MHz.  You would have to under clock it for this PSU.  Also, I would be concerned about the voltage provided by this PSU.  I think you're better off getting an EVGA 1600 Supernova.

After the 90 Day warranty, you might want to over clock your rig.  You would be able to over clock it with the extra wattage provided by the EVGA 1600.  For instance, if the Difficulty increased 8% in one month and the price of bitcoin increased 4% in the same month; [To avoid losing revenue] you could increase your hash rate by 4% by over clocking to generate the same amount of revenue that you were previously before the increase in difficulty that was not offset by the same amount of increase in bitcoin price.  That was only an example.

Could get away with it... but I highly would not recommend doing it as I would guess a someone out there would try to do the breaker without the proper wiring.   Which is not a good thing at all.

I would recommend as well getting a 240 line dedicated for miners with wiring you know is proper gauge.   It really is a better solution long term then trying to get away with other things that might not be quite as safe in long run.

If not working well , you see this


Click to enlarge

From soldering melting radiators (S5+ blade)

I agree.  We just don't know if he's comfortable taking out a single pole 15 amp and replacing it with a 2 pole 15 amp.  He might need to use a tandem breaker to make room in main service panel.  He would have to make sure no other NON-240 Volt devices are plugged into the circuit to prevent potential fire.  It would be best to have a dedicated circuit made just for the rig with its PSU.  It's quite common for circuits to be looped (in a string) for receptacles (outlets), switches and lighting.  I would be concerned about other devices connected to this circuit that would not handle the pressure of 240 Volts if someone were to accidentally plug a device not made for 240V at another outlet on the same loop as the circuit he upgraded to 240V.

It's best IMHO to make (create) dedicated 240V circuits just for the mining rig(s) and PSU's to avoid possible fire from circuits plugged into looped outlets on the same circuit that were designed for 120 Volts.

I've never tried plugging in a lamp [designed for 120V] in an outlet that was upgraded to 240 Volts.  I have no idea what would occur.  It may be you have experience with this and had no issues.  I can't elaborate on that cause I really don't have experience.  However, I'm usually one to go by the specifications laid out by the manufacturer of the appliance or light lamp.  If the specifications state 120V @ 60 Hz with no mention of 240 Volts, I keep it only in 120 Volts.  That's just me.  Maybe I should check it out some time to see what would happen.  However, I think I would run a line outside to the driveway to see what would occur as a precaution.

Yea that is a bit unnerving considering no ISP is 100% guaranteed and even my home router needs to be bounced once in a blue moon.

how can we make sure that "internet is working well"?
"oh, no, your miner boards got burned....you did not make sure that internet worked well".
I understand that he means well, but this is just impractical, seriously.

It is a Bitmain account, Janet's successor as she is off doing other things. I've asked them to add it to the BITMAIN signature.

ah, OK

I think residential power distribution is different. 120V on wall socket.

If I cannot use the recommended PSU by BITmain then what are my other options regarding PSU, if I wanted to start mining at home in America. What would you smart people suggest, who know how to calculate power.