Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 196. (Read 451277 times)

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.

Pretty much, hence its not recommended. There are more things that require cooling on that board than just the ASICs, and if they didn't we'd be seeing a vastly different cooling setup.

You reported a respectable reduction in noise level with your mod.  Do you know how much of it is due to the added shroud Vs removal of the finger guard?  I understand removing the guard alone makes a fair difference.

My shipment was canceled too. Even with a simple excel sheet I would be faster than 3 days to know what I have in Stock or not... Speechless... 

It seems they have no inventory but just drop ship from Bitmain after you order. Its a no lose thing for them then and a longer wait for the buyer. Also they can also keep any coupons I guess?

Zoomhash Sucks what A bummer! You think they would post "OUT OF STOCK" before people order it!

I have ordered twice via Zoomhash, once for S4(right before I learned about S5) and once for S5
Both times they took around 9 days to tell me they were out of stock and then took longer to refund the credit.
I no longer recommend them no matter what they offer, though I understand on the S5 deal, who wouldn't buy it at that price.

Finally didn't turn out well... My order for one S5
got cancelled 2 days after payment. Got an email from Zoomhash saying they don't have enough stock. But they debited my account anyway!
Now I'm nervously waiting for the refund...
Bad first experience in the mining world.

Edit: A least I'm not alone :-p