S5 review

[Xian01]

As usual, S5 will get better and better!

I appreciate your honesty this round, unlike the initial 28nm launch with the original 440GHs S3's.

[Meech]

Bitcoin mining will come with noise hazard and heat!!!  for commercial mining operations you'll need the ear muff, no matter you use S5 or SP20.

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

Agreed.  Home mining.... can barely support the noise/heat produced not to mention your only able to run a few of these without spending a thousand to upgrade your fuse box.  I used to enjoy the hum of the S1's in my living room and  even bedroom during last winter but alas that's not the case currently.  Healthy competition, maybe let's just hope were not caught in the middle.

[pekatete]

The airguides on the fans aren't a sign of a crap fan. They are designed to help shape the airflow and make it more laminar. It gives some of the benefits of  a counter-rotating fan (like the Delta GFBs) without the added cost.

If you have time, use a smoke machine and look at the flow pattern of a standard fan vs one like this or the Delta FFC1212DE. It's pretty interesting.

<snip> ... </snip>

The point about the fans being crap was in relation to the noise they emit AND the S5 being touted as a home miner.
On their own, the V34809 (if that is the fan used in the S5) with its Advanced Vane Axial Design, can hold its own and is well suited to a commercial environment and NOT a home one; and bitmain probably chose that particular design because of its efficiencies without taking into account the home mining environment as a major target market (but targeting them anyway!).

[klondike_bar]

Bitcoin mining will come with noise hazard and heat!!!  for commercial mining operations you'll need the ear muff, no matter you use S5 or SP20.

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

as part of my thanks for a demo unit i advised bitmain several things to make this a "home miner" (as it is the S5 is excellent for large deployment i think). I suggested a S5-silent model that costs $20 more and includes:
1) top and bottom shrouds made with the same light durable plastic as the sides. nothing fancy or bolted down zealously.
2) a second fan, OR adjusting the temperature monitoring and PWM control to keep the fan speeds down (running at 3000RPM for 40C is silly, 2000RPM and 50C would be more like an S3)
3) default speed of 325MHz. a few percent cooler/slower/quieter and easily ovewrclocked at the expense of noise

[Syke]

Overclocked to 400 MHz and still stable:

Ambient: 40c
ASIC temp: 69c
Board temp: 75c
Performance: 1320 GH/s
Power: 775 W
Efficiency: .59 J/GH (low efficiency Bronze PSU)

Over 1.3 TH/s easily achieved!

[IITravel01]

Bitcoin mining will come with noise hazard and heat!!!  for commercial mining operations you'll need the ear muff, no matter you use S5 or SP20.

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

as part of my thanks for a demo unit i advised bitmain several things to make this a "home miner" (as it is the S5 is excellent for large deployment i think). I suggested a S5-silent model that costs $20 more and includes:
1) top and bottom shrouds made with the same light durable plastic as the sides. nothing fancy or bolted down zealously.
2) a second fan, OR adjusting the temperature monitoring and PWM control to keep the fan speeds down (running at 3000RPM for 40C is silly, 2000RPM and 50C would be more like an S3)
3) default speed of 325MHz. a few percent cooler/slower/quieter and easily ovewrclocked at the expense of noise

Agreed, looks like 311MHz default is more probable according to someone else's testing for a lower noise mode.  I would suggest instead of a silent version, just adding a button that would allow a silent mode so you can instantly up it if you're not in the room/area.  Also, simple request to move the network port a few mm higher as to allow easy use of the Silverstone 140mm fan in front.

[Biodom]

Overclocked to 400 MHz and still stable:

Ambient: 40c
ASIC temp: 69c
Board temp: 75c
Performance: 1320 GH/s
Power: 775 W
Efficiency: .59 J/GH (low efficiency Bronze PSU)

Over 1.3 TH/s easily achieved!

these setting are almost like my SP20 in power, hash and temp. Care to report noise vs SP20?
Are you doing it on 750W bronze or higher wattage bronze?

[Syke]

these setting are almost like my SP20 in power, hash and temp. Care to report noise vs SP20?
Are you doing it on 750W bronze or higher wattage bronze?

Noise is comparable to SP20 (both systems all stock hardware).

So far all my testing of this S5 is with the same 750W bronze PSU. Only 1 change - adjusting clock speed in the web UI dropdown menu. The dropdown lists speeds up to 500M, but I really don't expect it'll go that high. That would be over 1.6 TH/s!

Once I find the limits of this configuration, I'll try a platinum PSU to see if there's any more headroom for overclocking.

[philipma1957]

these setting are almost like my SP20 in power, hash and temp. Care to report noise vs SP20?
Are you doing it on 750W bronze or higher wattage bronze?

Noise is comparable to SP20 (both systems all stock hardware).

So far all my testing of this S5 is with the same 750W bronze PSU. Only 1 change - adjusting clock speed in the web UI dropdown menu. The dropdown lists speeds up to 500M, but I really don't expect it'll go that high. That would be over 1.6 TH/s!

Once I find the limits of this configuration, I'll try a platinum PSU to see if there's any more headroom for overclocking.

i topped out at 356 using the silverstone fans. i hated the sound the stock fan makes

[bgibso01]

Here's where I'm at with the 400 setting after 13min. Temp has been holding steady, but unit is in a room with the window partially open and 24F outside.   Don't want to push further today as I am getting ready to leave the office.


Elapsed   GH/S(5s)   GH/S(avg)   
13m52s
                1,490.62    1,368.15

these setting are almost like my SP20 in power, hash and temp. Care to report noise vs SP20?
Are you doing it on 750W bronze or higher wattage bronze?

Noise is comparable to SP20 (both systems all stock hardware).

So far all my testing of this S5 is with the same 750W bronze PSU. Only 1 change - adjusting clock speed in the web UI dropdown menu. The dropdown lists speeds up to 500M, but I really don't expect it'll go that high. That would be over 1.6 TH/s!

Once I find the limits of this configuration, I'll try a platinum PSU to see if there's any more headroom for overclocking.

i topped out at 356 using the silverstone fans. i hated the sound the stock fan makes

[Syke]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

[klondike_bar]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

[MrTeal]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

[klondike_bar]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

not sure how to easily do this without a PSU capable of 13V at >60A, or even colder intake or higher airflow. temps are 55/53C with the back end of the heatsink reading about 33C where it contacts the PCB. using a cheap infrared thermometer, readings on the PCB range from 45-65C

[IITravel01]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

not sure how to easily do this without a PSU capable of 13V at >60A, or even colder intake or higher airflow. temps are 55/53C with the back end of the heatsink reading about 33C where it contacts the PCB. using a cheap infrared thermometer, readings on the PCB range from 45-65C

I thinking he may be suggesting an adjustment in the software setting voltage (ie, as in the advanced settings on the S3+'s new firmware), I don't think the S5 has that option.

[MrTeal]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

not sure how to easily do this without a PSU capable of 13V at >60A, or even colder intake or higher airflow. temps are 55/53C with the back end of the heatsink reading about 33C where it contacts the PCB. using a cheap infrared thermometer, readings on the PCB range from 45-65C

I thinking he may be suggesting an adjustment in the software setting voltage (ie, as in the advanced settings on the S3+'s new firmware), I don't think the S5 has that option.

No, I was suggesting upping the actual voltage. Klondike uses some server PSUs and many of them can trim the output voltage a bit.
I have a few big adjustable supplies, but there's probably some leeway there for adjustment.

I was actually blowing off my deck today and wondering what -20C air fed through a gas powered leaf blower would do.

[klondike_bar]

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

not sure how to easily do this without a PSU capable of 13V at >60A, or even colder intake or higher airflow. temps are 55/53C with the back end of the heatsink reading about 33C where it contacts the PCB. using a cheap infrared thermometer, readings on the PCB range from 45-65C

I thinking he may be suggesting an adjustment in the software setting voltage (ie, as in the advanced settings on the S3+'s new firmware), I don't think the S5 has that option.

No, I was suggesting upping the actual voltage. Klondike uses some server PSUs and many of them can trim the output voltage a bit.
I have a few big adjustable supplies, but there's probably some leeway there for adjustment.

I was actually blowing off my deck today and wondering what -20C air fed through a gas powered leaf blower would do.

Ive generally moved away from server gear, though you are probably right that some of the server supplies i have lying around can feed a bit higher if you throw a resister on the feedback pins. not a high priority though, as im aiming to get it as quiet as possible without needing subzero intake or having boards go past 65C

[Powell]

I went to change the password to the webgui and got an invalid password (root/root which let me in).

I cannot login via SSH?  Am I missing something different on the S5s?

[Syke]

I went to change the password to the webgui and got an invalid password (root/root which let me in).

I cannot login via SSH?  Am I missing something different on the S5s?

Yeah, I can't ssh in with root/root either.

[Powell]

I can't even change the webgui password which was even weirder lol!