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Nice review.

Here are 2 youtube videos of the exact same unit.

Which I am now testing.

It needs sound proofing to work in a home.

sound meter failed  on this video

Your video will be live at: https://youtu.be/auakWENgP8w

sound is okay with a sound proofing set up

Your video will be live at: https://youtu.be/P8MwWwctWVw

Great work HF. Wish I had more merit. ;)

Thanks for the nice comments, and merits guys. :)

Have a couple from me to mate,  Great review as always.

It is a good piece of gear.  Maybe just as good as the m10 now that both the m10 and the s15 both are subject to the 27.6% trump tax it is hard to pick which one to use.

The s15 with the soundproofing in my garage is quiet. I could use it all winter  in the garage.

Any read on db levels? Everything is soo quiet now with LPM and winter here.

S15 has the edge in performance wise but with cheap power and tariffs into the US the m10 looks about $500 less than the s15. I would agree though, hard to choose. Long term Bitmain might have another good unit and I could probably get three of these on my 30A 240 lines. Maybe four?

Look at the two videos I did.

The s15 is not bad with some sound proofing.

Maybe better then the m10.

As for what it is worth.

I would be willing to pay 💰 1000 usd for the s15

I would be will to pay 💰 875 usd for the m10.

Both the m10 and the s15 cost more new shipped to USA.

S15 = 1250- 65 = 1185 x 1.276 =  1512 + 105 = 1617 new shipped to my house.

M10 = 850 -15 = 835 x 1.276 =  1065 + 91 = 1156 new shipped to my house.   the last ones I purchased were 799  under the 800 and no trump tax.

so the price jump from 799 to 850    now means   875 new shipped to my house is  1156

even at 1156  I think the m10  for a usa buyer is better then the s15.

the t15  may be the best to buy now as it is 710-65 = 745 + 100 = 845 no trump tax.

so
 t15 at 845
 s15 at 1617
 m10 at 1156

I would lean to the t15.  but actually  that is only true if I had to my a btc miner today.

and I won't since  I would feel over charged.

Good break down. Long term I'd be looking at the s15 mostly if on my own. Though imagine a group buy for m10 would fair really well in bulk pricing. Thinking further still what t3 efficiency mode looks like and how it would look pending volume.

nice review - I just wish they were not so expensive to buy - the roi time frame makes them pretty much useless.

Great review HF, thanks.

So basically too loud for home use unless you have a dedicated space where you can sound deaden the space?

oh yea you are not putting an asic in your general living area - they are quite loud unless you take measures

Sound proofing my access door has been instrumental for my living space noise wise. Though my s9i LPM is quiet as hell. I think most complain about the PSU fans more than anything else. 

Yeah the biggest issue noise-wise are the power supply fans.

The psu fans produce a really annoying high pitch noise.

After the R4, this has been the only design consideration for the asic miners. They belong in an industrial warehouse, therefore noise doesn't matter, and it shows... However creative thinking can overcome part of this problem, such as using a wooden box with noise insulation fabric inside. I have seen others sell noise muffling kits, for S9s etc, but with varying degrees of success.

The S15 could fit inside a box in a garage just like philipma1957 did. My thinking is that, a box should be something like this (when viewed from above):


With the holes being full rectangles and not circles. All the walls inside this wooden box should be covered with noise insulating fabric.

i also notice no exhaust fans - I will have to come up with something on the 3d printer so I can hook these to my exhaust ducts

Oh please share Stryfe, I am also "Ducted".

I shall :)

Yes, PLEASE!  :)

I hope to get to it this weekend - if time allows - really just need to take measurements - looks like it will just be double length - if so, can widen one end and still leave it as 4" or even as 6" exit.

I placed the regular ones from the S9s that have a 5" exhaust (120cm wide I think) to check, and they don't fit properly, so maybe you will have to play a little bit more... Double length adjustment will not be enough, since the screws in the corners are like 1cm away from the S9s ones.

If you could to 4", 5" and 6" versions that would be awesome^awesome really  ;D

I wonder if they move double the air, does the S9 move 250 FPM, S15 500?

yes  maybe not 2x but yes more.

it is more like 2 short tubes

vs 1 long tube.

for cooling it is a better design  as the air only travels say 9 inches in this design

vs 16 inches in old design

so a    250 fan >>>say 16 inches>>>> 250 fan      in 1 tube does at best 275

vs a  >>>9">>>250 fan
        >>>9">>>250 fan  much closer to   say 400

so the exit ducts  need to be 2x the size.

exactly - so i am thinking of doing double tall same width and exit to 4" for mine only because I already have 4" to 6" adapters on the 6" ducts already but I still have some on 4" ducts as I upgrade those to 6" i will forego the 4" to 6" adapters and just use a 6" right off the miner. eventually will swap them all out as the ocd aspect will bug me lol.

you want to shrink from say  a 6 by 12 opening (the 2 fans) to 1 four inch duct hole?

or from say the 6 by 12  fans to 2 4 inch duct holes?

I would be pretty certain you will need 2x  4 inch ducts minimum

right now I have 4" 3d printed piece on the back of the current S9's like this

https://i.ibb.co/W6hyNny/Antminer-S9-L3-A3-4-inch-120mm-Fan-Duct-Low-Profile.jpg (https://i.ibb.co/W6hyNny/Antminer-S9-L3-A3-4-inch-120mm-Fan-Duct-Low-Profile.jpg)

which directly connects to one of these - immediately opening it from 4" to 6" --- originally I ran them as 4" directly outside but decided 6" would be better, rather then make all new pieces to hook to the miner, I used a 4" to 6" and just ran the ducting from the adapter to outside (distance to outside is less than 1 foot. The air does not have far to go before being vented.

https://i.ibb.co/1R0xckG/PC35093-lg.jpg (https://i.ibb.co/1R0xckG/PC35093-lg.jpg)

so my idea is to use the 3d printer to make something similar to this shape that will mount to back of miner and hook to my 4" to 6" adapter - thus the only thing I am replacing is the piece on the back of the miner.

the other idea is to just make it 6" remove the 4" to 6" adapter completely.

https://i.ibb.co/SNXdgbJ/ws-strboot.jpg (https://i.ibb.co/SNXdgbJ/ws-strboot.jpg)

The reduction in size from the rectangle to the tube may be too much and cause overheating.

The tube being short under three feet helps.

Yeah, don't go to 4" then to 6" it will restrict your flow, go straight to 6".

The tube length is 12" exactly from the 6" opening to outside. I just need to go from the back of the miner to the 6" opening on the duct. And with what you have said and my own thinking I will remove the 4" to the 6" adapter and go from the square directly to the 6" duct opening with a 12" tube to outside.  or do you think that would be too restrictive still?


agreed - based on what everyone is saying. will work on a design this weekend and during next week around my regular work schedule.

it is a friction issue due to smaller duct.

lets say the rectangle is 6 x 12 = 72 sq inches

a 4 inch duct is  only  4 x 3.14 = 12.56 sq inches  not likely to work  as a guess 95% no way

and a 6 inch duct is 9 x 3.14 =  28.36 sq inches  may work  maybe I would try it out

also the length of ducts cause friction  so shorter the better.

I don't remember the formulas for figuring it out.

you may find  the 6 by 12 rectangle  ends up morphing into a 7 inch duct  they do exist

that would be 6 x 12 = 72 rectangle

and 12.25 x 3.14 = 38.465 7 inch duct  

round duct I use pi x r x r   or 3.14 x 3.5 x 3.5 = 38.465

If I had room to expand the holes to 8" i would but they would then overlap and I cant have that.

maybe 7 inch they do exist.

also both the s15 and the t15 have low power settings  which could help if the six inch duct is too small.

I will go with the square off the back of the miner to 6" and see how that works.

let us know once it sets up.

will do - I will take the measurements this weekend - should be pretty straight forward.

currently this is how they are - you can see the 4" goes from back of miner to the 6" and then with a 12" tube to outside. Once done I will be insulating the walls as well to reduce heat coming in from outside.

https://i.ibb.co/vZSkPWS/IMG-E2215.jpg (https://i.ibb.co/vZSkPWS/IMG-E2215.jpg)

Just don't neglect the airflow around the miner, it is important. Ducts should not be directly attached to the miner in my opinion, but to a box where the miner resides inside instead.

my miners have considerable airflow around them, they are not in a box per se unless you count the entire building as a box :) - they are spaced about 18 inches apart from one another and there are 20 miners in an 8' by 8' room that has two 23" intake fans blowing into the room there is also a 5k btu AC unit and a dehumidification system. Miners stay around 60 C to mid 80 C.

Is it true that Antminer S15 has serious issues with its PSU?

No what is true is one guy blew 2 of them up feeding 245 volts to them.

No one has had any other issues and reported them here

It looks like Bitmain released new FW for S15/T15. Release date is 07.05.2019, but firmware description is same like previous version. Does anyone tried new firmware?

maybe check software section or ask there?

Anyone tried adding extra fans to these? Unlike the newer models from bitmain these only have two push fans at the front.

I want to do that with my T15 but have not gotten around to it. it is my only miner that does not vent directly to outside.

Is there any custom FW for T15 or S15?

I haven't encountered any custom fw yet,
but I would keep.following this project if they add a support for the S15:
https://braiins-os.org/

I got answer from Brainacs recently:


There is possibility that they will miss 15 series. It is lot more profitable for them to go directly on 17th series.

I've had two that have had their PSU's die, out of a batch of 10. So 20% PSU failure.

Outside of warranty of course  ::)

Actually the miners were outside of warranty but the PSU's have a 1 year warranty so were still within.

However after they are shipped to Bitmain US repair office, they reported back that there were faults on the hash boards as well.

I suspect that when the PSU goes it takes out the hash boards as well.

Anyway I had to pay for the hash board repairs and shipping but the PSU should be a free replacement.