Received Antminers S5 and only hashes up to 600-700 Ghs/s. Help!!!!

[Bigdavalillo]

Hey guys! Its me again! Sorry for the inconvenience but i need your help again!!!
Just received my new antminer S5 and I'm having some problems.

1- It only hashes up to  600-700 Ghs/s. The chips all seem to be working properly ( oooooo oooooooo oooooooo oooooooo)
                                                                                                                 oooooo oooooooo oooooooo oooooooo
 Heres a screenshot of how it look after 31 minutes of startup.

https://lh3.googleusercontent.com/-96lL7O-rr9o/VXJADU9DWxI/AAAAAAAAL3w/sO1gM5nAA_c/w431-h766-no/2015-06-05.jpg

2- The only thing im doing diferently is that with this one I found a PSU that was cheaper than the one with my other 2 antminers. This is the PSU model:

Sentey® Power Supply 750w 80 Plus Bronze Modular Mbp750-hm Metal Blade Power 750 Watts / 80 Plus Bronze / 120mm Sleeve Bearing Fan / Hybrid Modular / Autoswitching 100-240 Voltage / Active PFC / Single +12v Rail / Certified Power Cord / 5 Years Warranty - Computer Power Supply - Desktop Power Supply - Modular Power Supply - Power Supply 750w - Power Supply Modular

It was 15 bucks cheaper than the:

Corsair CX Series 750 Watt ATX/EPS Modular 80 PLUS Bronze ATX12V/EPS12V 744 Power Supply CX750M

Does this have anything to do with my low hash rate?


Thanks again and i only hope to master this endevour to repay with knowledge to future participants of the bitcoin community.

[Zich]

Can't find any reputable review for sentey PSU. But you can try to swap with your other PSU to see the result. This probably cause by PSU.

[notlist3d]

Can't find any reputable review for sentey PSU. But you can try to swap with your other PSU to see the result. This probably cause by PSU.

I have never used it but there is a topic where someone claims a sentry PSU burnt on his S3 - https://bitcointalk.org/index.php?topic=1082126.0

I would look over psu a lot before using.  If it uses cheap wires they can get hot and burn.


Is only one blade mining currently?  Cant tell from picture if both are mining or just one.

[MarkAz]

What are the temperature on the blades?  I've got a bunch of S5's, and I've seen before that even though no error is reported, one of the blades is basically offline - but the way that you can tell when that happens is that one of the blades is much cooler than the other (more than 5c or so).  When it happens, I generally spot it quickly and power cycle it - rebooting doesn't seem to resolve it, only powering it down and up again.

[philipma1957]

garbage psu.


 http://www.sentey.com/en/erp750-pm


750 watt psu with a 600 watt 12 volt rail



http://www.sentey.com/en/epp750-ps


or a 660 watt rail


http://www.sentey.com/en/epp750-ps


the two I find claim 600 watt and 660 not 750 watt 12 volt rails


try down clocking to 1000gh say 325 freq or 300 freq

if it works it means the psu is shit.

why do people buy bronze psu's you lose money with them.

[Mikestang]

why do people buy bronze psu's you lose money with them.

Yup, the extra money you spend on a gold or platinum is quickly made back in the efficiency gain between psu's.  I had a crappy bronze unit on my S3+, switched it to a gold and saw a 5% wattage reduction at the wall.

[philipma1957]

why do people buy bronze psu's you lose money with them.

Yup, the extra money you spend on a gold or platinum is quickly made back in the efficiency gain between psu's.  I had a crappy bronze unit on my S3+, switched it to a gold and saw a 5% wattage reduction at the wall.

I try to get server platinum cheap


 or evga 1300 g2


 or if I get a deal evga 1600 p2

the evga cost but they have 10 warranty and I just use them in my next setup.


sometimes a server platinum can be found really cheap no warranty but  if they are really cheap they are decent.

in a pinch :
corsair
seasonic
 antec   

  have some good gear.

a bronze psu burning 1050 watts vs a plat burning 980 watts is 50 kwatts a month at 12 cents a kwatt that is 6 dollars a month.  last winter I burned 5kwatts 24/7  that is  about 30 a month for 6 months =

180 usd a year for 3 years of mning = 550 usd and all the psu's are under warranty except 1 server plat which still works.