Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 196. (Read 451039 times)

What offer to put that ram heatsink??
Will have more speed?

Exactly.  Price should continue to plummet not plummet upwards.  Are these gold plated limited edition models?

yeah, there was a picture of these somehwere  

It was just a question. Perhaps some people cut the connector off the stock fan to hard wire a new fan that came with bare leads. The question I think is relevant.

Strato

Ooohh, that's why I'm about to glue a little radiators exactly on all of those capacitors (since they are marked as C12, C25 and so on whan you look at PCB). I'm just waiting for it to arrive.

How on earth can Bitmain prove that you switched the stock fan for a fan which produces less noise.
Please tell?

I am guessing that replacing the stock fan voids the warranty. I wonder if that was planned- that by using a fan that users would obviously replace, would reduce warranty claims. Or is the warranty still in effect?

Strato

That looks OK ..... if you happen to get an explanation out of bitmain (I am sure it is still within its warranty), do tell.

Hi Bitmain,

The S5 is $0.32/GH without shipping; not $0.25.

ya, fan turns on - I am using a Thermaltake 850W 80 PLUS Bronze

http://www.amazon.com/Thermaltake-Bronze-ATX12V-EPS12V-SP-850M/dp/B007BDJ58C

Dear Bitmain,

I understand you guys/gals are really really busy and it's probably just an oversight

When BTC started rising the price of the S4/S5 went up, when it continued to rise they both went up again.

Now that BTC has dropped back down to it's previous level, the prices have remained the same which makes your products much worse value than a week ago.

No need to thank me for alerting you to this, you are welcome

Regards
Tigggger

Is the fan still working? looking at the sides i guess the fan is dead or something was wrong with the ventilation

I agree .... which makes me think PSU.

Gotcha. Strange thing to have it at once on the both sides

It's both ..... images of both sides have a burnt chip.

This is just one hashing board right?
Disconnect it from the controller and see if the other one works

I am not surprised it is not hashing anymore, string mode = one out, all out!
Looks like you had that running without any mods, i.e standard fan in push configuration, so, what PSU did you have on this?

Plastic cover looks warped from heat too, yikes.

is this what happens when it reaches 80 C or does this mean that it went above 80 C?  The unit still turns on and I can see that I have it set to turn off if it reaches 80 C, but it doesnt look like it did

The unit powers on and I can get to it via the network but it wont hash - I figured it out when I took the sides off and found the burned board.

I dont have any thermal events on my other miners.

http://i1079.photobucket.com/albums/w501/bond007taz/20150129_070925_zps9a3314f2.jpg

http://i1079.photobucket.com/albums/w501/bond007taz/20150129_071133_zpsce3ee8cd.jpg

http://i1079.photobucket.com/albums/w501/bond007taz/20150129_071246_zpsa56bbac6.jpg

"... more things that require cooling ..." - What are these more things? They surely must have a name if they exist, and would be visible in the image too! Or is it a case of secret components that only bitmain staff know about and have been sworn to secrecy?

Truth of the matter is that cooling the LM75 results in lower reported temps thus lower fan speeds (and noise). Add to that, there are no discernible components, on the side the LM75 is sited, that require that much cooling. On the chip side, well thats got the heatsink / waterblock.

More pertinent though is that the LM75 temps are used just to govern the fans. In the case of the chip core temps, that is handled by the control-board software. So basically, if there was a substantial reduction in cooling, that would result in higher board & chip core temps and should the chip core temps exceed the thermal cutoff specified in the (obfuscated) control board code, the board would not send work to the chip(s) until the core temps fell below the thermal cutoff, and that would manifest itself in a drop of hash-speed. Clearly, that has not happened to the people who've done these mods.

So, unless you can throw more light on these ".. more things that require cooling ..", I'll just have to put it down to the usual dogie-waffle.