Butterfly Labs - Bitforce Single and Mini Rig Box - page 52.

jddebug

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Quote from: jamesg on March 24, 2012, 12:59:23 PM

Quote from: jddebug on March 24, 2012, 12:54:36 PM

This one I have cost $199 for Gold? and 1200 watts. Same realm I think. This CoolMax had very good ratings. Who knows. Maybe when I cut the cables to length I'll see the savings. I was expecting something like a 100 watt savings though.

Well, 100w * 745h = 74.5Kw/h

At $0.07104 ($5.29 per month) I am not doing this for the power savings. It really to keep the install clean as (if you haven't noticed) I'm kind of OCD.

Oh, I noticed. I envy in actually. I can tell when something looks good but have such a hard time making it look that way myself. I do try believe it or not.

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Quote from: jddebug on March 24, 2012, 12:54:36 PM

This one I have cost $199 for Gold? and 1200 watts. Same realm I think. This CoolMax had very good ratings. Who knows. Maybe when I cut the cables to length I'll see the savings. I was expecting something like a 100 watt savings though.

Well, 100w * 745h = 74.5Kw/h

At $0.07104 ($5.29 per month) I am not doing this for the power savings. It really to keep the install clean as (if you haven't noticed) I'm kind of OCD.

jddebug

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Quote from: jamesg on March 24, 2012, 12:47:40 PM

Quote from: jddebug on March 24, 2012, 12:36:52 PM

Quote from: DeathAndTaxes on March 24, 2012, 09:02:00 AM

Yeah 6ft is way too long for that kind of current. If you want 6ft cables then they should be 16 (or even better 14) gauge wire. Also I wish you had a better PSU. Even with 30W or so lost due to excessive wiring the efficiency seems very low for 80Plus-Gold unit. You don't by any chance have any xfx, seasonics, antecs or other tier 1 supplier PSU lying around do you?

I don't have any other PSU's. I am considering returning this one and getting a better one but its at least $130 more for a platinum 97?% efficient one. I just don't see it paying off in a reasonable amount of time ($330+ invested). If the replacement PSU had 16 gauge or better wiring it would be VERY tempting though. I'm on the fence with this one.

The advantage seems to be having one power supply for all and that its likely more reliable than the power bricks. One of my bricks has already turned itself into a "brick". BFL sent a replacement out right away but I decided at that time to go ahead and put this PSU together. Didn't like one single just sitting there doing nothing.

I purchased this PSU for my singles.

http://www.amazon.com/Cooler-Master-Modular-Certified-RSA00-AMBAJ3-US/dp/B002RWJGCM

This one I have cost $199 for Gold? and 1200 watts. Same realm I think. This CoolMax had very good ratings. Who knows. Maybe when I cut the cables to length I'll see the savings. I was expecting something like a 100 watt savings though.

jamesg

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Quote from: jddebug on March 24, 2012, 12:36:52 PM

Quote from: DeathAndTaxes on March 24, 2012, 09:02:00 AM

Yeah 6ft is way too long for that kind of current. If you want 6ft cables then they should be 16 (or even better 14) gauge wire. Also I wish you had a better PSU. Even with 30W or so lost due to excessive wiring the efficiency seems very low for 80Plus-Gold unit. You don't by any chance have any xfx, seasonics, antecs or other tier 1 supplier PSU lying around do you?

I don't have any other PSU's. I am considering returning this one and getting a better one but its at least $130 more for a platinum 97?% efficient one. I just don't see it paying off in a reasonable amount of time ($330+ invested). If the replacement PSU had 16 gauge or better wiring it would be VERY tempting though. I'm on the fence with this one.

The advantage seems to be having one power supply for all and that its likely more reliable than the power bricks. One of my bricks has already turned itself into a "brick". BFL sent a replacement out right away but I decided at that time to go ahead and put this PSU together. Didn't like one single just sitting there doing nothing.

I purchased this PSU for my singles.

http://www.amazon.com/Cooler-Master-Modular-Certified-RSA00-AMBAJ3-US/dp/B002RWJGCM

jddebug

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Activity: 446

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Quote from: DeathAndTaxes on March 24, 2012, 09:02:00 AM

Yeah 6ft is way too long for that kind of current. If you want 6ft cables then they should be 16 (or even better 14) gauge wire. Also I wish you had a better PSU. Even with 30W or so lost due to excessive wiring the efficiency seems very low for 80Plus-Gold unit. You don't by any chance have any xfx, seasonics, antecs or other tier 1 supplier PSU lying around do you?

I don't have any other PSU's. I am considering returning this one and getting a better one but its at least $130 more for a platinum 97?% efficient one. I just don't see it paying off in a reasonable amount of time ($330+ invested). If the replacement PSU had 16 gauge or better wiring it would be VERY tempting though. I'm on the fence with this one.

The advantage seems to be having one power supply for all and that its likely more reliable than the power bricks. One of my bricks has already turned itself into a "brick". BFL sent a replacement out right away but I decided at that time to go ahead and put this PSU together. Didn't like one single just sitting there doing nothing.

JWU42

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DeathAndTaxes

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Yeah 6ft is way too long for that kind of current. If you want 6ft cables then they should be 16 (or even better 14) gauge wire. Also I wish you had a better PSU. Even with 30W or so lost due to excessive wiring the efficiency seems very low for 80Plus-Gold unit. You don't by any chance have any xfx, seasonics, antecs or other tier 1 supplier PSU lying around do you?

P_Shep

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This is not OK.

I made mine short... just 2ft, for that reason.
6ft 18awg will drop .5v ish @ 12V 6A, so about 3W loss on each cable.
2ft will drop 0.15, so 1W loss on each cable.

I might even make them shorter... I'll see how it fits together WHEN THEY BLOODY ARRIVE!

http://www.powerstream.com/Wire_Size.htm

jddebug

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Quote from: rjk on March 23, 2012, 10:23:56 PM

Quote from: jddebug on March 23, 2012, 10:04:34 PM

Quote from: rjk on March 23, 2012, 09:39:01 PM

Quote from: jddebug on March 23, 2012, 09:31:16 PM

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

What PSU is it?

Its powering 10 singles. 860 watts for the singles and the PSU. The hub and the laptop are on another circuit. They are using about 20 watts.

CoolMax ZPG 1200

I bought this one because I have 4 more on the way and wanted it to power them all.

With the 10 singles with the power bricks and the laptop and the hub I was pulling 850 watts total.

Then theres the $200 PSU I bought and all the connectors. I'd say it is not a good financial investment but it did clear up a lot of space.

By my calculations, that's only 83% efficient at 60% load, far less than the standard Gold rating of 90% at 50%. Either it has a really odd curve, or something else doesn't add up. I couldn't find that exact model on Ecova's site either.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817159123

http://www.coolmaxusa.com/productDetailsPower.asp?item=ZPG-1000B&details=overview&subcategory=140mm&category=80plus

I'm disappointed. I'd send it back if I weren't so pleased with it powering all the singles from one cord.

I used 18 awg wire. Thats the same as the PSU itself uses. I'm considering cutting the cords to no longer than necessary. I can tell by how flexible the are that they are probably losing a watt or 2 each themselves. They aren't exactly warm but not what you'd expect either. Each connector came with a 6 foot wire already attached. Seemed handy but it could be where I'm losing some of the efficiency.

rjk

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1ngldh

Quote from: cyberlync on March 23, 2012, 10:32:27 PM

Quote from: BFL-Engineer on March 19, 2012, 05:56:51 AM

I might correct that it's ~85W for 832MH/s. Of course, the board itself consumes 71-72W, but the inefficiency of the PSU
takes up to ~85W. One could use a central PSU for multiple singles, with a higher efficiency...

All the best,

I was referring to the aftermarket PSU he hooked up, not the included adapters. The PSU he has should be more efficient than the adapters, but does not appear to be. The adapters are approximately 84% efficient.

cyberlync

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Quote from: BFL-Engineer on March 19, 2012, 05:56:51 AM

I might correct that it's ~85W for 832MH/s. Of course, the board itself consumes 71-72W, but the inefficiency of the PSU
takes up to ~85W. One could use a central PSU for multiple singles, with a higher efficiency...

All the best,

rjk

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1ngldh

Quote from: jddebug on March 23, 2012, 10:04:34 PM

Quote from: rjk on March 23, 2012, 09:39:01 PM

Quote from: jddebug on March 23, 2012, 09:31:16 PM

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

What PSU is it?

Its powering 10 singles. 860 watts for the singles and the PSU. The hub and the laptop are on another circuit. They are using about 20 watts.

CoolMax ZPG 1200

I bought this one because I have 4 more on the way and wanted it to power them all.

With the 10 singles with the power bricks and the laptop and the hub I was pulling 850 watts total.

Then theres the $200 PSU I bought and all the connectors. I'd say it is not a good financial investment but it did clear up a lot of space.

By my calculations, that's only 83% efficient at 60% load, far less than the standard Gold rating of 90% at 50%. Either it has a really odd curve, or something else doesn't add up. I couldn't find that exact model on Ecova's site either.

jddebug

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Quote from: rjk on March 23, 2012, 09:39:01 PM

Quote from: jddebug on March 23, 2012, 09:31:16 PM

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

What PSU is it?

Its powering 10 singles. 860 watts for the singles and the PSU. The hub and the laptop are on another circuit. They are using about 20 watts.

CoolMax ZPG 1200

I bought this one because I have 4 more on the way and wanted it to power them all.

With the 10 singles with the power bricks and the laptop and the hub I was pulling 850 watts total.

Then theres the $200 PSU I bought and all the connectors. I'd say it is not a good financial investment but it did clear up a lot of space.

rjk

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Activity: 448

Merit: 250

1ngldh

Quote from: Askit2 on March 23, 2012, 09:52:01 PM

I wonder if the 5V 3.3V and negative rails are just burning power. I see you have a USB hub maybe run it off your 5V line if you haven't already it may cause less wasted power. I am assuming that the voltage rails use some power just sitting there. There could be other issues. I wish I could come up with something the 3.3V would be good for. I was hoping to do the same kind of thing when I get a couple. I am sad to hear efficiency seems to suffer.

You might be able to fix that by using the PSU to power the host system, and the host could be some kind of cheap mini-itx board. But I see 8 Singles, which should equate to about 560 watts DC. If the PSU is a 600 watt model, I wouldn't expect it to be within 90% efficiency at so close to maximum load. However I'm not sure what its rating is. Do you have the make and model?

Askit2

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I wonder if the 5V 3.3V and negative rails are just burning power. I see you have a USB hub maybe run it off your 5V line if you haven't already it may cause less wasted power. I am assuming that the voltage rails use some power just sitting there. There could be other issues. I wish I could come up with something the 3.3V would be good for. I was hoping to do the same kind of thing when I get a couple. I am sad to hear efficiency seems to suffer.

fred0

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Quote from: jddebug on March 23, 2012, 09:31:16 PM

Quote from: jamesg on March 23, 2012, 05:01:33 PM

Quote from: P_Shep on March 23, 2012, 04:42:05 PM

They do look a little sinister like that.

Like they're plotting something.

They are plotting to multiply and take over the network!

They are multiplying.

http://i1248.photobucket.com/albums/hh497/johnvogt/IMG_1828.jpg

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

I recognize that usb hub

Even though it works well, I think that I would get the 12 port hub if I had to do it over. With the 12 port hub, the lights for each connected single are unambiguous, with the 24 port hub it can be tough the distinguish when both red and green LEDs are properly lit.

rjk

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1ngldh

Quote from: jddebug on March 23, 2012, 09:31:16 PM

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

What PSU is it?

jddebug

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Quote from: jamesg on March 23, 2012, 05:01:33 PM

Quote from: P_Shep on March 23, 2012, 04:42:05 PM

They do look a little sinister like that.

Like they're plotting something.

They are plotting to multiply and take over the network!

They are multiplying.

By the way. The whole PSU to power them all is not as good of idea as I had though it would be. This is a Gold PSU and I am still using about 20 to maybe 30 watts more than I was with the power bricks. Go figure. The PSU is a very reliable power source though. those cheap power bricks will probably not last long. Nice not having 10 of them plugged in anymore too.

jamesg

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Quote from: P_Shep on March 23, 2012, 04:42:05 PM

They do look a little sinister like that.

Like they're plotting something.

They are plotting to multiply and take over the network!

P_Shep

legendary

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This is not OK.

They do look a little sinister like that.

Like they're plotting something.

Topic: Butterfly Labs - Bitforce Single and Mini Rig Box - page 52. (Read 186944 times)