ASICMINER Auction: 50 Block Erupter Blades CHECK OP FOR PAYMENT

[Pinwheel]

if any of you want to sell the blade, PM me 

and me

[drlatino999]

My blade started rebooting this day about every two hours. The power board is about 70C. Set clock to low to see what happens.
Should not be a pool problem. I have a fallback pool and every time I notice the blade has rebooted the pool is switched too. Seems the blade stops hashing, then switches pool, then rebootes, then hashes normally for some time.

This is wierd. My blade stops hashing exactly after 57 min 30 sec then swithces pool (with no hashing) then reboots. It happened 5 times in a row now. exactly 57 min 30 sec. Is it firmware bug?

I can't say I'm having this issue? What type of cooling setup are you using? I managed to pull my board for an uptime of 22 hours yesterday before I had to change the IPs of the local stratum proxy's.

[dogie]

THIS HEAT SHALL NOT DEFEAT ME. Ordered 4x120mm 100CFM fans + a controller, will remount for the third time in an even more heat friendly configuration. Noticed something really weird and very unsettling though.

I'm drawing 262W for 2 units + 500W PSU 80+ PSU, 230V. So assuming worst case PSU is at 80% and burning 52W.
So raw board + fans of 210W. Each small fan is just over 1W, and assume the large but rubbish ones are 2.5W.

Thats 195W of power draw from 2 boards. I thought we were expecting low 80s for overclocked clocks? Something seems wrong here.

[drlatino999]

I'm using this guy for cooling - http://www.amazon.com/Cooler-Master-MegaFlow-Computer-R4-LUS-07AR-GP/dp/B002LE8BJA and with one my board is cool to the touch.

[friedcat]

THIS HEAT SHALL NOT DEFEAT ME. Ordered 4x120mm 100CFM fans + a controller, will remount for the third time in an even more heat friendly configuration. Noticed something really weird and very unsettling though.

I'm drawing 262W for 2 units + 500W PSU 80+ PSU, 230V. So assuming worst case PSU is at 80% and burning 52W.
So raw board + fans of 210W. Each small fan is just over 1W, and assume the large but rubbish ones are 2.5W.

Thats 195W of power draw from 2 boards. I thought we were expecting low 80s for overclocked clocks? Something seems wrong here.

Our experiment data:

70-75W on 1.03-1.05V (no overclock)
83W on 1.10V (no overclock)
~100W on 1.20V (no overclock)
~120W on 1.20V (overclock)

[Caesium]

Thought it was 80 odd watts at low clock and stock voltage?

As I posted earlier mine are 480W for 4, including fans. The fans are 0.17A @ 12v, so 2W * 6 fans, call that 12W.

I reckon I'm getting about 90% efficiency out of the CPU (65% load or so, so should be near its peak efficiency).

So 48W burnt by the PSU and 12W for fans leaves 105 watts per blade for me.

[friedcat]

Thought it was 80 odd watts at low clock and stock voltage?

As I posted earlier mine are 480W for 4, including fans. The fans are 0.17A @ 12v, so 2W * 6 fans, call that 12W.

I reckon I'm getting about 90% efficiency out of the CPU (65% load or so, so should be near its peak efficiency).

So 48W burnt by the PSU and 12W for fans leaves 105 watts per blade for me.

The voltage of the 50 blade batch is not stock voltage (1.05V) any more. It is pre-turned to 1.20V for the ease of overclocking (just one click on the website without screwing first). But if you do not need overclocking, you may want to screw them to 1.03-1.05V to reduce a lot of heat and (hence) the noise of bigger fans.

[Caesium]

Oh I do run mine at High, absolutely

So it sounds like I'm doing quite well then, probably my PSU is even higher than 90% efficiency. If your tests show 120W for 1.2v at High (thats what you mean by Overclock?) then I'm pretty much spot on the money and my fans are barely taking anything

[dogie]

THIS HEAT SHALL NOT DEFEAT ME. Ordered 4x120mm 100CFM fans + a controller, will remount for the third time in an even more heat friendly configuration. Noticed something really weird and very unsettling though.

I'm drawing 262W for 2 units + 500W PSU 80+ PSU, 230V. So assuming worst case PSU is at 80% and burning 52W.
So raw board + fans of 210W. Each small fan is just over 1W, and assume the large but rubbish ones are 2.5W.

Thats 195W of power draw from 2 boards. I thought we were expecting low 80s for overclocked clocks? Something seems wrong here.

Our experiment data:

70-75W on 1.03-1.05V (no overclock)
83W on 1.10V (no overclock)
~100W on 1.20V (no overclock)
~120W on 1.20V (overclock)

My mistake, thanks

[friedcat]

My blade started rebooting this day about every two hours. The power board is about 70C. Set clock to low to see what happens.
Should not be a pool problem. I have a fallback pool and every time I notice the blade has rebooted the pool is switched too. Seems the blade stops hashing, then switches pool, then rebootes, then hashes normally for some time.

This is wierd. My blade stops hashing exactly after 57 min 30 sec then swithces pool (with no hashing) then reboots. It happened 5 times in a row now. exactly 57 min 30 sec. Is it firmware bug?

We will check the firmware. But more likely it's the problem with the pool/proxy because it's too regular. Please try using a different one.

Also, 70C on the power module is a bit too high. The heatsink of our hashing board could safely heated up to >70C, but we haven't tested 70C on the power module yet.

[dogie]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

[desired_username]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

As it has been said before, this approach is the worst, because the fans are just circulating the heat around the blade. The goal is to transfer the heat from around the blade.

[Fury!]

Did any of you have PSU problems? I mean - when i set the clock to "high"  it just cuts off the power. I need to reconnect PSU's wire again, to make it work. (im doing this manualy by connecting green+black wire on http://www.nordichardware.com/skrivelser_img/432/psu.atx.jpg )
Im using CX600W corsair PSU, one blade, 3x12cm fans connected. They've been used with gpu's previously, so they ARE efficient enough for me not to worry about temperature. It happens whenever i power on while on "high" and whenever i change the clock to high.
"Low" clock works and hashes fine.

Although, when i connect the PSU to motherboard and all the usual garbage with it, it works perfectly.
What is the problem? Did i miss something?

[dogie]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

As it has been said before, this approach is the worst, because the fans are just circulating the heat around the blade. The goal is to transfer the heat from around the blade.

The problem with turning the fans into a pull config is that there isn't a seal, or anything close to a seal on the fans. They'll just spam all their pressure sucking in the non heatsink air because its so much easier to move. At least with a push config it has to go into the heatsink.

[kibblesnbits]

Dogie, take the blade out of the box.  The chips on the opposite side of the board need air circulation.  I would try to set the blade on its edge, heat-sink on the bottom.  Get two 120mm case fans and park them in front of the heat-sink with air going away from the sink.  I added a third fan today and have it pointed across the power supply module, it was getting a little too hot for comfort.  The third fan blows air across the length of the module, not directly on it. 

The blades aren't meant to be resting on anything that would stifle air flow across it. 

[nottm28]

That's going to be an epic fail...

[wsoei]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

http://i1279.photobucket.c om/albums/y530/dogiee/2013-05-09185535_zps31ed1835.jpg
http://i1279.photobucket.co m/albums/y530/dogiee/2013-05-09185538_zps9a01ab91.jpg
http://i1279.photobucket.co m/albums/y530/dogiee/2013-05-09185547_zps09f9dca8.jpg

As it has been said before, this approach is the worst, because the fans are just circulating the heat around the blade. The goal is to transfer the heat from around the blade.

The problem with turning the fans into a pull config is that there isn't a seal, or anything close to a seal on the fans. They'll just spam all their pressure sucking in the non heatsink air because its so much easier to move. At least with a push config it has to go into the heatsink.

These blades seem to be a pain in the butt.  I'll take one for the team.  I'm willing to adopt them and give them a home.

[frejo]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

Did you read this? https://docs.google.com/document/d/1VMO3VfIBy3KIwUaaQ8XhKrSVEbXeeMEqsVhhk6Bz9io/edit?pli=1

quote: "Please make it vertically placed if you could. The chips are packaged via QFN, but not all the heat are absorbed by the PCB. The back side will also become hot. And if you have no mechanical setting to lift it and have to lay it on the supporting table, please make sure that there are no heat isolation material under it."

[dogie]

Dogie, take the blade out of the box.  The chips on the opposite side of the board need air circulation.  I would try to set the blade on its edge, heat-sink on the bottom.  Get two 120mm case fans and park them in front of the heat-sink with air going away from the sink.  I added a third fan today and have it pointed across the power supply module, it was getting a little too hot for comfort.  The third fan blows air across the length of the module, not directly on it. 

The blades aren't meant to be resting on anything that would stifle air flow across it. 

They're actually on 1" stilts and can raise them up more. Will have 2x120mms blowing sideways across/under the boards. I've tried 3 different configs and this is by far the coolest, and will get even cooler with the new fans tomorrow.

Power boards have their own mini fans, will have bigger ones soon.

That's going to be an epic fail...

..why?

[dogie]

3rd attempt at mounting to reduce temps, ready for the new fans. This seems to be the approach most are taking, flat with a 1" gap underneath. This will be ventilated with the old 120mms once the new ones arrived.

Did you read this? https://docs.google.com/document/d/1VMO3VfIBy3KIwUaaQ8XhKrSVEbXeeMEqsVhhk6Bz9io/edit?pli=1

quote: "Please make it vertically placed if you could. The chips are packaged via QFN, but not all the heat are absorbed by the PCB. The back side will also become hot. And if you have no mechanical setting to lift it and have to lay it on the supporting table, please make sure that there are no heat isolation material under it."

Why did no one read what I actually posted :/  "flat with a 1" gap underneath."