Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 127. (Read 451266 times)

Go to metric screws section in Lowes and I think that they are PM 4mm-0.7X45mm in length if you install 38mm fan WITH grill or 40mm in length if no grill or for a 25mm extra fan. I think that they sell 3 in a bag, which is less convenient, but cost is only $1.25/bag.

Mine has a visbile layer of dust on the controller board and much more than "light dust" on the fan.  You can see the dirt on my fan from across the room.

I went back and looked all all 4 of my new ones really closely, the ONLY wear and tear I could see is possibly during the QA burn in period, there's very light dust on the edge of the fan, like you'd expect after being run for a day or two at most. 

The PCBs are all 100% clean, no hidden dust in any of the nooks and crannies, no dust inside any of the heatsinks.

I don't believe any of my 4 were used.  I have two more arriving monday, I'll check them closely as well.

I would have said my first one I took out of the box was new, but the second is definitely used.  Neither run right though.

My HW error rate exceeds my Accepted rate.  Reset one a few minutes ago.  340 HW errors with only 302 Accepted after 10m46s running.  

Added: This is with one board reporting 48C and the other 49C at the default 350 frequency.  Says all ASICs are fine.

do you know what size screws i should get for the back fan?

also would adding a back fan decrease the temps enough to slow down the front one??
what if i used one of those fan speed adapters.. im assuming the fan is just a regular 4 pin pwm connector?
i have a few of those that come with CM fans that are preset to 1800 and 1600 and 1200. altho i think those speeds are set for a 2500 rpm fan, i think its 70% 60% and 50%

definitely something weird going on..
my was new, shiny, and unused.. unless they did a really good job of cleaning mine.

Did I miss something on their website for the product?  It references a "final production run", not used cast offs from their own mining farm.  One unit I received looks pretty good overall, the other looks like it's been running somewhere sitting on a dirt floor for several months.  Neither appear to achieve a stable hash rate near the claimed spec.  I'm lucky to get over 1TH out of either one although the GUI claims all the chips are fine.

Only running around 48 C on temps (seen 51 a few times briefly) in an ambient temperature of around 72 degrees F (that's fairly normal room temp for the metric minded), but with the suboptimal output, not surprising I guess.  Fans at 3360 RPM at 48C on the dirty one.  Seems like the fans could back down a bit.  Other is slightly less and runs slightly hotter.

I got the impression from the reviews that they built a pretty good miner, but I'm getting a little different impression first hand with these two.  I'd be willing to bet the fan on the dirty one fails pretty soon.  The dirty fan is definitely louder than the other.  I can hear it over my ASICMiner Prisma even, and that thing is loud.  At least it achieves (exceeds most the time) its claimed spec for the noise it makes though.  I'm way outside the -5% on both these units.  Average hash after an hour, 998.88GH/s on the dirty one which seems to run slightly better than the other speed wise.  I've tried different pools including AntPool with the same results.  Has 1947 HW errors in an hour too.

How do I tell whether I have the latest firmware?  

Just the opposite for me. And hardly any errors. 3 HW errors in 27 hours of mining at 400 MHZ.

Got a new S5 a couple of days ago. It runs VERY hot compared to my older ones. Like 20C hotter . Anyone else see the same thing?

[Unofficial mod] If you choose a plastic type with a Tm of 100C+ you'll be good. Alternatively you could use electrical or duct tape.

Hello all,

sorry but no time to read all the previous treads...

Do anyone actually purchased the miner, got already and started to use??

Thank you

Best option in my opinion is s3 case 

What about some thin plastic like the sides. Does it get hotter on top then the sides?

What size are the screw's. I'm going to add a fan to the back and maybe it will allow the front fan to run slower

Please DO NOT place cardboard or any flammable item on top of the Antminer.  It can be a fire hazard.

I did something like this with mine. I used a thin piece of plastic and trimmed up a top and side plates and taped it all together. I also set up my scythe grand flex pwm fans as push pull. I am running 64/65 temps and it seems just as quiet as my s3's. I will be testing other fan combinations over the next few days to see if I can get it under 60 and keep it quiet without underclocking. If anyone is interested I can post pics and results with what I find out.

I doubt it will have any appreciable impact on the heat of the box.

question about these, i dont like how the top is all open, they will get very dusty after awhile.

if i cut some cardboard to fit the opening and tape it down.. making holes in it where the plugs go.. would that void the warranty at all?
would it cause any effects? the fan seems to blow enough air, so i dont think that will make them get hot?

it might even quiet it down some..

ThunderMine, Yep, this is obvious if you not first time buyer, this is from their cloud, i'm glad if i receive miner in working condition  

It appears Bitmain is shipping some used hardware as part of the Batch 5 units.  I just received 2 S5's and one of them has bent cooling fins on the bottom, and a considerable amount of dirt in the fan and cooling fins along with scratches on the sides of it.

I'm new to AntMiners, but my experience is not starting off as a good one with Bitmain if they ship obviously used hardware, while claiming it is new.