Topic: S5 and heat (Read 1764 times)

Yea that is hotter then i would like it.  I think you made a smart move taking it out of box.  Likely will take more CFM's from box fan or something big I think for box idea to work.

Glad it worked out in garage.  Looks like much better setup then the box.

So the box has failed. Went to work today, came home and the S5 is at 74C (Still working, but unacceptable).
Grabbed a cheap Wi-Fi extender and switch, and moved the S5 to the garage:
http://imgur.com/7eIRFoz
Late in the day now, still day time though and warm at 25C, and the s5 is plugging along at 58C

Cheers and thanks everyone.

Crash

Definitely a pain! 

And your box may be great for short term.  I just think when you hit the hot day's of summer with so little of fan's its going to heat up and be a pretty harsh condition.  And elements from outside is kinda a pain.  

I'm not sure on your electricity prices.  But if your in the market where S5 level miners are still profitable in future maybe look at Avalon 4.1's.  They are not a huge difference on efficiency I think high 50's instead of low 50's if I remember right.   But they run so quiet underclocked they are the most quiet miners I have used (not including like USB sticks, or old blades, etc just modern miners).  So a big difference from the hot/loud of the S5. But again that all depends on your electricity price if they even make sense at this point.

Oh yes, the boss  has def made it clear that inside is unacceptable.

I have a garage that I may make use of in the future, it is just too far away from the house for a feasible internet connection. (and so full of cr*p that there's no space). Underhouse is waterproof, but exposed to atmospheric conditions; i.e. humidity, wind, dust    Which is why I went the server cabinet (box) option. Advantage for me for underhouse is easy access to internet and power.

As an experiment, and starting point, the location is what the location is; i.e. in the future I may set up in the garage, but as it is about to be demolished, I'm not running power or internet out there. The property is secure, but bad people can always get over fences. Admittedly US$500 is not a big issue for me, but I'd still not loose the miner to theft.

Crash

If at all possible I would look at inside your house still.   You might need to underclock or something to make it bearable to you.   But I'm not huge fan of under house after thinking about it.  Do you get rain under your house?  Just thinking of environment and setup under house could be hard.

Securing all depends on you honestly.  I know my miners have a alarm system, and cameras.  Is that overkill for most?  Yes chances are it is. But mine is above a garage/crop farm work area.  So it is really to protect both.

Racing along now at 70C, starting to drop (slowly) as night comes on. Ok for mild summer, and def ok for winter but when 40C+ hits...the poor little miner's fkk'd.

Thinking I'm going to have to ditch the box as a bad idea, get a set of wire shelves and work out a different security option. (Wire cable to the shelves perhaps )

Thanks for your advice guys,

Crash

I'm saying something like a box fan: http://www.amazon.com/Lasko-3723-20-Inch-Premium-3-SPEED/dp/B000HHJ2I2/ just as a example.  

I just think your box is going to need more air flow then a small computer fan during the hot day's.  I know during summer I had a good amount of watt's in my mining area and I used high CFM fan's and my weather is not great with evaporation cooing.   

And I could be wrong it just seems like from picture it is a decent sized box.  So I turn to bigger fan.

You're talking about big, 20-30cm (8-12") type fans aren't you, not little cpu type fans?

That at least is some improvement the other temperature just is to hot for me to like it personally.    This one still might be a problem when it warms up there.

I really suggest looking at something such as a box fan and push some decent CFM's through it's box.  My mining summer how I got through it was with lot of CFM's from fans.   

So' I'm in South Eastern Australia: Middle of summer, but currently very mild, only 20C. Likely to be much higher, although it is a little insulated from heat under the house.

I've added a duct to the exhaust fan on the miner:
http://imgur.com/LbTI6iK
(hey, I've now used cable ties AND duct tape! )

63C now is highest, but its only had a few minutes to warm up

Crash

EDIT: Seems to have settled at 66C

The only thing is I'm guessing he is still having winter weather.  OP is that correct? I could be wrong.   But if 74c is with winter weather he really needs to solve it a little more before summer heat's up.

I'm still thinking he might need a fan or something to push air.  I'm thinking in a box with vent's likely is not moving hot air away from miner.  One PC fan is not moving much air.  I'm talking about like a box fan or something with decent CFM.

The fan in the top of the box:
http://imgur.com/Ml9669V

That is how the s5 temps usually are I wouldn't worry too much about the difference. I would underclock it to get it under 70 max temp. When adjusting clock or airflow always use the higher temp as the actual temp.

EDIT: Got a picture of the top and how a fan is sucking air out?

Thanks Sobe It.
The miner is orientated sideways atm, with the intake quite close to the side vent. The 2nd fan pulls the air out of the miner, and is pointed at the other side, blowing the hot air out. There is also a fan on top of the box, pulling air out.
The miner is on a piece of wood, just as wide as itself, so air can circulate around the entire miner.

My problem now is uneven temps: Chain1 is 59C and Chain 2 is now 74C

I think I need bigger vents, and yes, some ducting may be necessary.

Crash

I would be very cautious with the heat of the boards.... the temp reading is basically the temp of the pcb and not the asics themselves. The miner is/can be set up to shut down when the temps reach 80C but as I said thats the pcb and the asics will most likely be hotter. Heat kills these miners, my rule of thumb for myself on the s5 is if you can keep the boards at/below 65C or MAX 70C 24/7 you should be ok. I dunno what others do, its just for my piece of mind.

You do have airflow in and out of that box but its not linear in/out how the fans are set up to push/pull cfm across the heat sinks. The cold climate is most likely in your favor in keeping that thing cool, a underclock will help you control your temps inside that box. Its hard to tell what side of the box is bolted to the wall and how you have it sitting in there all closed up. I think the best solution for your case if/when you get a 2nd rig or you run into temp  issues would be have the air intake side of the miner pointing to one side of the box and cut a hole on the other side just big enough to fit house dryer vent or something similar (2 when you get another) and get some of that flexible ducting and attach it to the miner(s). That way the miners use air from the existing holes as cool inlet air and the hot air leaves the box.

Also make sure you have the miner (mounted or sitting) on something flat the whole length of the miner to force the air to make a full pass on the heat sinks.

The box:
http://imgur.com/1TtbQ9V
A standard secure 'server' cabinet: vents on each side, and at front below glass. I added a fan on top of the box that pulls air up and out.
The underhouse area is a large space, that is open on one side to the elements: rain can't reach the box, but airflow is what ever is around at the time.
Orientating the miner sideways (http://imgur.com/xCLkfZm) so pulling air in through the side vent is about 5-10C cooler than pointing at the glass (http://imgur.com/RYtOnah).

Crash

So second fan is installed, and I replaced the side covers. Temps are now 55&65. So this has helped one side, but not the other :/
I don't really want to muck with heatsinks, a bit past my skills level at this stage, so I'll leave it for a while, and may under clock a little.

Thanks for your advice guys.

Crash

Yea I have an s1, 2 s3s and an s3+ sitting here collecting dust and I was doing my bi weekly cleaning of my 2 s5s I have running. After I had the first s5 up and running I just looked in the corner and thought to myself, I wonder if the heatsinks on the s3+ would benefit the s5 like they did on the s3+. Swapped every thing around and I was pretty shocked what a difference it made.