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Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 198. (Read 451277 times)

legendary
Activity: 4326
Merit: 8899
'The right to privacy matters'
legendary
Activity: 1218
Merit: 1003
legendary
Activity: 1274
Merit: 1004
Sensors in a standard S5 are also cooled by the fans, thus a lower reading, whereas in a water cooled setup, not much air movement is concentrated on the boards (aka sensors), so the readings are going to be higher.
In any case, if this were not the case, then we'd see that reflected in the other stats- hashrate, HW% etc, but we don't.

Cooling isn't there just for the chips, so if you're saying that its okay that the other components are too hot because the chips themselves are cool, you're gonna have a bad time.

To answer your other statement, we don't usually see temperatures reflected in those other stats anyway. Plenty of people using low RPM fans run at similar temps without any noticeable effect on the telemetry.
The reason I would expect that you'll see higher temperatures on the back side temp sensor is that since the primary heat path is through the external radiator, the unit fans that cool the boards are running much slower and thus the PCB and temperature sensor are hotter. If he was still running at 3600 RPM with the stock S5 fans, you'd still expect to see lower temps with the water cooling.
legendary
Activity: 1218
Merit: 1003


Those are hot temps.

From what I understand the temperature sensors are on the opposite side of the board than the asic chips. Since he is using water blocks to cool the chips, he won't get an accurate reading on temperature. The heat is pulled away from the chips more efficiently with the water block than with the air cooling heat sink.

That doesn't really make sense. A water block or an 'air block' would make no difference to how the temperature probe reads in relationship to the actual.

Dogie- You are wrong. Again.
How do you explain this ?  My cooling water temperature is 32 degrees.

hero member
Activity: 518
Merit: 500
Sensors in a standard S5 are also cooled by the fans, thus a lower reading, whereas in a water cooled setup, not much air movement is concentrated on the boards (aka sensors), so the readings are going to be higher.
In any case, if this were not the case, then we'd see that reflected in the other stats- hashrate, HW% etc, but we don't.

Cooling isn't there just for the chips, so if you're saying that its okay that the other components are too hot because the chips themselves are cool, you're gonna have a bad time.

To answer your other statement, we don't usually see temperatures reflected in those other stats anyway. Plenty of people using low RPM fans run at similar temps without any noticeable effect on the telemetry.

Another dogie-waffle response ...

The hashing chips are the primary heat generators in the S5, and the water cooling block (like the air cooling) is targeted at the chips. As was pointed out, the sensors are on the opposite side of the board and the reading they give in an air cooled setup is subject to the active air cooling, i.e the fans, which is not the case with a water cooling setup as the fans are mounted on the radiator (that should not be too hard to understand really).

If the temps are too high, you'll get HW errors when the chips fail to return a result (which will also reduce the reported hash-rate), and in the extreme case, the unit will stop hashing aka thermal cutoff .... and that is where temps are reflected in the other stats in case you were still trying to figure that out.
legendary
Activity: 1666
Merit: 1185
dogiecoin.com
Sensors in a standard S5 are also cooled by the fans, thus a lower reading, whereas in a water cooled setup, not much air movement is concentrated on the boards (aka sensors), so the readings are going to be higher.
In any case, if this were not the case, then we'd see that reflected in the other stats- hashrate, HW% etc, but we don't.

Cooling isn't there just for the chips, so if you're saying that its okay that the other components are too hot because the chips themselves are cool, you're gonna have a bad time.

To answer your other statement, we don't usually see temperatures reflected in those other stats anyway. Plenty of people using low RPM fans run at similar temps without any noticeable effect on the telemetry.
hero member
Activity: 518
Merit: 500


Those are hot temps.

From what I understand the temperature sensors are on the opposite side of the board than the asic chips. Since he is using water blocks to cool the chips, he won't get an accurate reading on temperature. The heat is pulled away from the chips more efficiently with the water block than with the air cooling heat sink.

That doesn't really make sense. A water block or an 'air block' would make no difference to how the temperature probe reads in relationship to the actual.
It is what it is, try and get your head around it!
Sensors in a standard S5 are also cooled by the fans, thus a lower reading, whereas in a water cooled setup, not much air movement is concentrated on the boards (aka sensors), so the readings are going to be higher.
In any case, if this were not the case, then we'd see that reflected in the other stats- hashrate, HW% etc, but we don't.
legendary
Activity: 1666
Merit: 1185
dogiecoin.com


Those are hot temps.

From what I understand the temperature sensors are on the opposite side of the board than the asic chips. Since he is using water blocks to cool the chips, he won't get an accurate reading on temperature. The heat is pulled away from the chips more efficiently with the water block than with the air cooling heat sink.

That doesn't really make sense. A water block or an 'air block' would make no difference to how the temperature probe reads in relationship to the actual.
newbie
Activity: 44
Merit: 0


Those are hot temps.

From what I understand the temperature sensors are on the opposite side of the board than the asic chips. Since he is using water blocks to cool the chips, he won't get an accurate reading on temperature. The heat is pulled away from the chips more efficiently with the water block than with the air cooling heat sink.
sr. member
Activity: 261
Merit: 257
In case anyone needs to enable the buzzer and flashing light in the same way the FindYourMiner app works but doesn't want to have to use windows I threw together a quick ruby script that does the same thing from command line and commented it as best I could. You will need to know the IP of your miner beforehand as this won't scan for it like the FindYourMiner app does.
Code:
#!/usr/bin/env ruby

# Make sure net-ssh is installed "gem install net-ssh"
require 'net/ssh'

enable_buzzer = "echo 20 > /sys/class/gpio/export \n"
activate_buzzer = "echo low > /sys/class/gpio/gpio20/direction \n"
buzzer_on = "echo 1 > /sys/class/gpio/gpio20/value \n"
buzzer_off = "echo 0 > /sys/class/gpio/gpio20/value \n"
enable_light = "echo 45 > /sys/class/gpio/export \n"
light_on = "echo 1 > /sys/class/gpio/gpio45/value \n"
light_off = "echo 0 > /sys/class/gpio/gpio45/value \n"

loop do

puts "Enter IP to Enable Buzzer"
ip_input = $stdin.gets
ip_address = /([0-9.]+)/.match(ip_input)
ip_address = ip_address.to_s

# Log into miner over ssh using default credentials
Net::SSH.start(ip_address, "root", :password => "admin", :paranoid => false) do |ssh|
puts "Verifying Model"
# Read model information
type = ssh.exec!("sed -n 2p /usr/bin/compile_time")
# Print Model
puts type
# Verify miner is actually a S5 before attempting to turn on the buzzer
if type.strip == "Antminer S5"
puts "Enableing Buzzer"
puts "Press Enter when done"
# Enable gpio interface for buzzer
ssh.exec!(enable_buzzer)
ssh.exec!(activate_buzzer)
# Buzzer stays on until shut off
ssh.exec!(buzzer_on)
# Enable gpio interface for light, may not be required to turn on light as it appears to be enabled by default
ssh.exec!(enable_light)
t = Thread.new do
# Loop to keep the light flashing until done
while true
# Light does not stay like buzzer does it only flashes
ssh.exec!(light_on)
# Wait half a second between flashes
sleep(0.5)
end
end
# Wait until Enter key is pressed
gets
# Kills loop thread which makes the red light flash
t.kill
# Shuts off buzzer when done
ssh.exec!(buzzer_off)
# Shuts off light, may not be needed since light appears to stay off by default
ssh.exec!(light_off)
puts "Disabling Buzzer"
else
puts "Wrong Miner Type"
end
end
end
legendary
Activity: 2128
Merit: 1005
ASIC Wannabe

The S5 won't get 1.3TH/s at 650W though, unless your unit is significantly better than mine are.


Hmm I get 650W (119V) on my KillAWatt running 1245GH on a 1000W LEPA Bronze supply with 375mhz.  I did briefly run 390/400mhz with a Gold supply and thought I was averaging about 1.3T/650W but maybe I'll go back and double check...

Thats what I don't get all the SP20 love here.  It takes 960W @ the wall for 1.4/1.45TH on my SP20s.  So I feel like 300W to gain 100/150GH is just a bad deal on the SP20.  Heck thats nearly 50% more power required!

I dunno I just haven't touched my S5s in two weeks, and they are solid.  The amount of messing-around I have done on the SP20E and the number of firmware updates/fluctuating GHs numbers, etc -- well lets just say it reminds me of the early Jups and all the tweaking that was required to get those big chips all happy.  

Well I prefer to push my SP20 harder now and lower then later (diff jump). It always depends on so much factor ... for me electricity is cheap, so it's a no-brainer (~1100 watt for like 1560GH)

The benefit of the SP20 is that at about the same speed as stock on the S5 it is equally efficient, and can operate at further efficiency (it gets close to 0.45) or ramp up its speed by 50% if theres a reason to want maximum hashrate even if its less efficient (such as for the paycoin spree, or if we saw a 50%+ price rally)

The S5 needs to be priced cheaper than the SP20 i think. Both are excellent products but this antminer is disadvantaged in a few ways
hero member
Activity: 518
Merit: 500
What frequency are you running that thing at? Also, I cannot see you having more than 2 blades, but I may be wrong, how many blades are those?

2580GH/s .... ? Care to post a screenshot of the webUI?

frequency 400  2630 GH/s  1375W    Silwerstone 1500W PSU with soldered EVGA double cables ( SST-ST1500 )

http://www.perearstike.ee/C1/C1.400.2.jpg

Impressive .... I suppose the real test on that setup would be the longevity of that PSU and whether you'd need a 1700W / 2200W (80% / 60% load respectively). But yeah, that's approx 690W for a "standard" S5.
legendary
Activity: 1582
Merit: 1019
011110000110110101110010

My water-cooled S5 with selected miner blades works.with EVGA G2 1300  
1295W    2580GH/s   0.502W/GHs


I have to try a more powerful power supply unit.


What frequency are you running that thing at? Also, I cannot see you having more than 2 blades, but I may be wrong, how many blades are those?

2580GH/s .... ? Care to post a screenshot of the webUI?

frequency 400  2630 GH/s  1375W    Silwerstone 1500W PSU with soldered EVGA double cables ( SST-ST1500 )





Those are hot temps.
legendary
Activity: 1218
Merit: 1003

My water-cooled S5 with selected miner blades works.with EVGA G2 1300  
1295W    2580GH/s   0.502W/GHs


I have to try a more powerful power supply unit.


What frequency are you running that thing at? Also, I cannot see you having more than 2 blades, but I may be wrong, how many blades are those?

2580GH/s .... ? Care to post a screenshot of the webUI?

frequency 400  2630 GH/s  1375W    Silwerstone 1500W PSU with soldered EVGA double cables ( SST-ST1500 )



hero member
Activity: 518
Merit: 500
3. Server PSUs are a who other matter. I wouldn't even bother with a 550W server PSU, since you can find 800W server PSUs for that price just as easily. You just need to be willing to do some extra work to get them working.
On the mark there ..... just happen to have a ton of them 550W types in my shed that were powering my S3's that I have now disposed of. (they actually worked well on the S1's as well!)
In that case, if you have a bunch already and they're all wired up, you might as well just use them. I have a bunch of 450W server supplies kicking around that I used for S1s as well, but they just have wire leads and I'm not going to bother putting PCIe plugs on them.
I suppose you are right ... still, I am getting 1350GH/s average (as opposed to the 1312GH/s I got from a single 850W server PSU), so never know, tweeking up the voltage (a simple pot twist on the 550W's!) may yield a bit more yet!
Still think 2 550W's are more efficient than one 750W / 850W even 1100W powering an S5 .... and over 6 months, that may be something. Gotta get that killawat.
legendary
Activity: 1274
Merit: 1004
3. Server PSUs are a who other matter. I wouldn't even bother with a 550W server PSU, since you can find 800W server PSUs for that price just as easily. You just need to be willing to do some extra work to get them working.
On the mark there ..... just happen to have a ton of them 550W types in my shed that were powering my S3's that I have now disposed of. (they actually worked well on the S1's as well!)
In that case, if you have a bunch already and they're all wired up, you might as well just use them. I have a bunch of 450W server supplies kicking around that I used for S1s as well, but they just have wire leads and I'm not going to bother putting PCIe plugs on them.
legendary
Activity: 1274
Merit: 1004

The S5 won't get 1.3TH/s at 650W though, unless your unit is significantly better than mine are.


Hmm I get 650W (119V) on my KillAWatt running 1245GH on a 1000W LEPA Bronze supply with 375mhz.  I did briefly run 390/400mhz with a Gold supply and thought I was averaging about 1.3T/650W but maybe I'll go back and double check...

Thats what I don't get all the SP20 love here.  It takes 960W @ the wall for 1.4/1.45TH on my SP20s.  So I feel like 300W to gain 100/150GH is just a bad deal on the SP20.  Heck thats nearly 50% more power required!

I dunno I just haven't touched my S5s in two weeks, and they are solid.  The amount of messing-around I have done on the SP20E and the number of firmware updates/fluctuating GHs numbers, etc -- well lets just say it reminds me of the early Jups and all the tweaking that was required to get those big chips all happy.  
The hashrate numbers sound about right. Mine are getting a 12hr average of 1271GH/s @ 375 and 1311GH/s @ 400, so you'd expect ~1291GH/s at 387.5.
hero member
Activity: 518
Merit: 500
3. Server PSUs are a who other matter. I wouldn't even bother with a 550W server PSU, since you can find 800W server PSUs for that price just as easily. You just need to be willing to do some extra work to get them working.
On the mark there ..... just happen to have a ton of them 550W types in my shed that were powering my S3's that I have now disposed of. (they actually worked well on the S1's as well!)
legendary
Activity: 1274
Merit: 1004
Just putting this out there, would you not get better efficiency if you run the S5 off 2 PSU's, e.g a 550W for each blade than run the whole rig off a single 750W/850W/1100W PSU?
Depends. Generally within the same product line a 550W running at 50% load will be about as efficient as a 1100W running at the same 50% load. More practically, the 550W units would tend to be easier to find and cheaper, but often the cheap ones you find aren't as efficient or well built as the 1100W units. You then also have another full ATX supply to deal with, and if you have more than a couple of these it gets to be a pain. I actually thing the sweet spot is probably 750-850W. You can get decent well built gold PSUs in that range dirt cheap, running a 750W PSU at 550W (DC) won't really get it into the bad part of it's efficiency curve, and they're still super easy to source.
1. Throw into that mix the 550W PSU being a server one - smaller (yes), less efficient than a 1100W (no)
2. If we get to the sweet spot being between 750W-850W for the S5, then I can not see how either would be more efficient than 2 550W PSU's, assuming same product line.
3. Then there will be price, I know you can pick up a multi rail 750W PSU for around GBP 50.00 (could be cheaper depending), but you can also pick up a single rail 550W server PSU for GBP 10.00
I think it is both cheaper and more efficient to run an S5 that way .... I am just not sure how the draw at the wall would differ (and that's why I put it out here, been tumbling about in my head for a while now!)
1. Not sure, it depends on the server PSU. There's a lot of 550W PSUs on eBay that are pulls from the mid-2000s, and they often aren't necessarily any more efficient than an ATX PSU.
2. They wouldn't be more efficient, but they wouldn't be much less efficient. I saw the sweet spot because you then get away from having to use two PSUs with the corresponding extra volume and cable management, and the price per watt is still good. Once you go up over 1000W, the price per watt goes up dramatically.

For example, you can go get a Rosewill Capstone 750W gold supply at Newegg for $90 shipped in quantity, no rebates or other crap. It'll still do 90% efficiency at 550W (DC) output. You could pick up two 550W supplies and be right in the 50% part of the curve, but any two supplies you get for $90 will probably do worse than the 750W supply anyway since you'd really have to shop around or dick around with buying one at a time and using MIRs to get anything other than a Bronze PSU under $50.

3. Server PSUs are a who other matter. I wouldn't even bother with a 550W server PSU, since you can find 800W server PSUs for that price just as easily. You just need to be willing to do some extra work to get them working.
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