Butterfly Labs - Bitforce Single and Mini Rig Box - page 33.

fizzisist

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Quote from: Tinua on May 04, 2012, 02:09:32 AM

I just see, that " kill a watt" is an brand. So i use not this!! I use one from "Brennstuhl".
I will buy an other one today with different brand for have an second measurment.

I just check the rig after 7h mining: still 930Watt. Single temperatur betwen 52°C and 63°C!

Better would be to buy an ammeter and measure the DC current at the board level. Apparently these kill-a-watt devices can get very confused with inductive loads (like a switching power supply).

Tinua

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Quote from: rjk on May 03, 2012, 07:49:56 PM

Quote from: Tinua on May 03, 2012, 06:47:59 PM

Quote from: DeathAndTaxes on May 03, 2012, 06:38:37 PM

Tinua you were asked HOW you measured the load 3 times but have never answered?

So here goes #4.

HOW did you measure a load of 50W? As in describe the steps, tools, and measurements that lead you to believe the single is using 50W.

I Put the kill a watt meter on 1 host PC with an HD5770 and start to mine.
Then i connect 15 Singles and start to mine.
1 host PC + GPU mining: 180W
1 host PC + GPU + 15 Singles idle: 412W
1 host PC + GPU + 15 Singles mining: 920W

OK so you are using a kill-a-watt. That's good, they are generally accurate. This interested me:

I just see, that " kill a watt" is an brand. So i use not this!! I use one from "Brennstuhl".
I will buy an other one today with different brand for have an second measurment.

I just check the rig after 7h mining: still 930Watt. Single temperatur betwen 52°C and 63°C!

kano

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Quote from: DeathAndTaxes on May 03, 2012, 06:38:37 PM

Tinua you were asked HOW you measured the load 3 times but have never answered?

So here goes #4.

HOW did you measure a load of 50W? As in describe the steps, tools, and measurements that lead you to believe the single is using 50W.

Got my BFL (single top fan with the new heat sink) from someone else today.
My Watt meter was measuring 50W (extra) when I checked WTF was going on ...

After watching it for a while ... it jumped up to 75W.
Answer is simple: the POS is throttling.
Even 75W wasn't full 830Mh/s

rjk

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1ngldh

Quote from: Tinua on May 03, 2012, 06:47:59 PM

Quote from: DeathAndTaxes on May 03, 2012, 06:38:37 PM

Tinua you were asked HOW you measured the load 3 times but have never answered?

So here goes #4.

HOW did you measure a load of 50W? As in describe the steps, tools, and measurements that lead you to believe the single is using 50W.

I Put the kill a watt meter on 1 host PC with an HD5770 and start to mine.
Then i connect 15 Singles and start to mine.
1 host PC + GPU mining: 180W
1 host PC + GPU + 15 Singles idle: 412W
1 host PC + GPU + 15 Singles mining: 920W

OK so you are using a kill-a-watt. That's good, they are generally accurate. This interested me:

Quote from: ice_chill on May 03, 2012, 06:31:41 PM

They changed the power phase in REV3, it looks like a much more efficient one.

It is possible that the changed power subsystem, coupled with the high voltage input has increased your efficiency by that much. However, I wouldn't expect that either one or the other is solely responsible for the boost.

Tinua

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Quote from: DeathAndTaxes on May 03, 2012, 06:38:37 PM

Tinua you were asked HOW you measured the load 3 times but have never answered?

So here goes #4.

HOW did you measure a load of 50W? As in describe the steps, tools, and measurements that lead you to believe the single is using 50W.

I Put the kill a watt meter on 1 host PC with an HD5770 and start to mine.
Then i connect 15 Singles and start to mine.
1 host PC + GPU mining: 180W
1 host PC + GPU + 15 Singles idle: 412W
1 host PC + GPU + 15 Singles mining: 920W

DeathAndTaxes

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Gerald Davis

Tinua you were asked HOW you measured the load 3 times but have never answered?

So here goes #4.

HOW did you measure a load of 50W? As in describe the steps, tools, and measurements that lead you to believe the single is using 50W.

Epoch

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Quote from: Tinua on May 03, 2012, 05:22:49 PM

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

I put a Kill-A-Watt meter on a cluster of 10 Rev3 Singles, using the stock BFL PSU and stock fans. Here are my results:

10 Singles at idle: 181W
10 Singles + 1 host PC at idle: 206W
10 Singles + 1 host PC mining: 820W

Since my PC is using 25W (Asus Eee Box EB1012, dual-core Atom processor), my 10 Singles use exactly 820W-25W or 795W (this is at the wall using the stock PSU).

Thus each Single uses 79.5W at full load. These are Rev3 Singles, with the stock heatpipe cooler and stock fan. I am running these off of 120V/60Hz. Power draw shouldn't be much different for 230V/50Hz.

Tinua

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Beside..the temperatur from my singles are only betwen 51°C (124°F) and 63 °C (145°F) with roomtemperatur from ~20 °C (69°F)!

ice_chill

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They changed the power phase in REV3, it looks like a much more efficient one.

SgtSpike

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Quote from: Tinua on May 03, 2012, 06:26:25 PM

Quote from: The00Dustin on May 03, 2012, 06:17:12 PM

Quote from: Tinua on May 03, 2012, 05:22:49 PM

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

It has been a long time since I have taken an electronics class, but I believe wattage would be lower if voltage was higher. If you were running on 220, then that might explain it. I believe you mentioned German Windows in another thread, so I thought you might be in Europe and figured I'd point this out.

Yes..I'm from Switzerland.
We have 230V.
What I know is wattage is allways the same. The Ampere go down (P=UxI)
If the Powersupply only suck 50Watt by 230V (0.21A), then it can not give more by 12Volt. Only the Ampere go up to 4.16A.
(Not including the inefficienc of the China-Powerupply)

Or I'm wrong?

No, you are correct. Wattage remains the same regardless of what voltage you are running at. Higher voltage just means lower amperage needs to be drawn to equate to the same wattage.

Tinua

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Merit: 1000

Quote from: The00Dustin on May 03, 2012, 06:17:12 PM

Quote from: Tinua on May 03, 2012, 05:22:49 PM

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

It has been a long time since I have taken an electronics class, but I believe wattage would be lower if voltage was higher. If you were running on 220, then that might explain it. I believe you mentioned German Windows in another thread, so I thought you might be in Europe and figured I'd point this out.

Yes..I'm from Swiss.
We have 230V.
What I know is wattage is allways the same. The Ampere go down (P=UxI)
If the Powersupply only suck 50Watt by 230V (0.21A), then it can not give more by 12Volt. Only the Ampere go up to 4.16A.
(Not including the inefficiency of the China-Powerupply)

Or I'm wrong?

The00Dustin

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Merit: 500

Quote from: Tinua on May 03, 2012, 05:22:49 PM

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

It has been a long time since I have taken an electronics class, but I believe wattage would be lower if voltage was higher. If you were running on 220, then that might explain it. I believe you mentioned German Windows in another thread, so I thought you might be in Europe and figured I'd point this out.

Tinua

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Quote from: SgtSpike on May 03, 2012, 05:53:15 PM

What are you using to measure?

I know its not exactly...but 40% wrong Huh

Beside...i use also an other model...same result +/-

rjk

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1ngldh

Quote from: Tinua on May 03, 2012, 05:22:49 PM

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

It is possible that newer versions may be doing better on power usage, since the measurements were made with older models. But as far as we know, only the cooling components have changed in the newer versions. What are you using to measure the power draw?

The only other change that I know of was that the board was slightly changed to support the heatpipe mounting system - perhaps the power subsystem got a tweak at the same time to improve efficiency.

SgtSpike

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What are you using to measure?

Tinua

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Activity: 871

Merit: 1000

I read allways that the BFL-Singles need ~80Watt.

My PC with 1 mining GPU HD5770 and 15 BFL-Singles v3 suck ~920 Watt from the wall.
My PC and GPU need 180 Watt; the 15 BFL's need 740Watt.
This give only ~50Watt/Single ; this with the orginal China-Powersupply. Huh

Or is something wrong with my measurement?

rjk

sr. member

Activity: 448

Merit: 250

1ngldh

Quote from: TheSeven on May 03, 2012, 04:19:38 PM

Quote from: Inspector 2211 on May 03, 2012, 01:18:24 PM

Quote from: WhitePhantom on May 03, 2012, 11:33:28 AM

Quote from: Epoch on May 03, 2012, 10:22:23 AM

I'll have to snip the leads to the bottom fan

For simplicity in testing, I'd recommend just taping down the fan blade to keep it from spinning, or another low-tech method of restriction (a piece of chewed gum?). If you get some thermal throttling, it's easy to make it spin again.

I would advise against that - a stuck motor can draw a multiple of the wattage that it normally draws, and thus overheat, even burn out.

Well, a piece of paper across the air intake should do the trick for testing, but I generally advise against trusting in any kind of thermal shutdown, especially if the unit is known to not have on-die temperature sensors and just measure the board/air/case temperature.

The singles do have on-die temp sensors, and they can be read with cgminer.

TheSeven

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Quote from: Inspector 2211 on May 03, 2012, 01:18:24 PM

Quote from: WhitePhantom on May 03, 2012, 11:33:28 AM

Quote from: Epoch on May 03, 2012, 10:22:23 AM

I'll have to snip the leads to the bottom fan

For simplicity in testing, I'd recommend just taping down the fan blade to keep it from spinning, or another low-tech method of restriction (a piece of chewed gum?). If you get some thermal throttling, it's easy to make it spin again.

I would advise against that - a stuck motor can draw a multiple of the wattage that it normally draws, and thus overheat, even burn out.

Well, a piece of paper across the air intake should do the trick for testing, but I generally advise against trusting in any kind of thermal shutdown, especially if the unit is known to not have on-die temperature sensors and just measure the board/air/case temperature.

Epoch

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Quote from: coblee on May 03, 2012, 03:12:13 PM

I finally got my BFL singles. I can't quite get them mining.

Does a solid red light mean it's working properly or not?

Does anyone have success running these on a mac? Do you run cgminer or MPBM or something else?
Do they show up as /dev/tty.usbserial?

Sorry, Coblee, can't help you about the Mac. But a solid red light is a good sign. There are actually 3 LEDs on a Single (from memory; I don't have one in front of me ATM). There is 1 external one and 2 internal ones:

External LED:
solid: unit is ready to mine, or is mining
blinking: unit is booting up (takes about 10 seconds from power-on), or is thermally throttling

Internal LED #1:
always solid on: unit is powered

Internal LED #2:
off: unit is idle and not mining
solid on: unit is mining
(this LED will blink once every 5.2 seconds, after it finishes its nonce range and gets new work)

coblee

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I finally got my BFL singles. I can't quite get them mining.

Does a solid red light mean it's working properly or not?

Does anyone have success running these on a mac? Do you run cgminer or MPBM or something else?
Do they show up as /dev/tty.usbserial?

Topic: Butterfly Labs - Bitforce Single and Mini Rig Box - page 33. (Read 186944 times)