Liquid Synergy Designs Inc. -ASIC mining hardware

[Unacceptable]

Anyone know what the thermal resistance of the goop SB used on the miners is? (Or even just what kind/fab)

Also I bought myself some fans http://www.digikey.com/product-detail/en/FFB0912VHE/603-1430-ND/2560554 to replace the stock ones.

Think they may make an impact on overclock headroom? At least there will be more noise

The fans on the heatsink are fine,you need to cool the backside,VERY important............he used artic silver,but it is non conducive type,won't carry electricity    

With the backside being cooled by at least a fan with .35 amp draw,not sure of cfm,my temps went from 63C down to 46-50  

The fan I used below is a 1 amp 120mmx120mmx38mm old cpu fan.Temps are 46C on all 4 miners @ 350mhz  

[Rakessh]

Anyone know what the thermal resistance of the goop SB used on the miners is? (Or even just what kind/fab)

Also I bought myself some fans http://www.digikey.com/product-detail/en/FFB0912VHE/603-1430-ND/2560554 to replace the stock ones.

Think they may make an impact on overclock headroom? At least there will be more noise

The fans on the heatsink are fine,you need to cool the backside,VERY important............he used artic silver,but it is non conducive type,won't carry electricity    

With the backside being cooled by at least a fan with .35 amp draw,not sure of cfm,my temps went from 63C down to 46-50  

The fan I used below is a 1 amp 120mmx120mmx38mm old cpu fan.Temps are 46C on all 4 miners @ 350mhz  

-- snip pics --

Yeah was gonna use the stock fans to cool the backside, right now I got a table fan blowing across the backside of all 5 units.

I was talking about thermal resistance, not electrical resistance (it's non-conductive so as a pretty insane electrical resistance there)

I scraped off the arctic silver on one of them and applied Noctua goop (what I had on hand), but a lot LESS than was on there to begin with, spread it out thinner, then reapplied the heatsink. That miner now run 10 celcius degrees cooler. I have taken it successfully up to 360, but the others don't want to go there stably, yet.

4 miners rund between 50 and 54 degrees, and the one with proper amounts of goop run at 43-44 @ 355

Arctic Silver (5?) should have about the same thermal resistance as the noctua goop. (I'm asking about the goop because of the insane temp difference, thinking it could be some chinese crap)

I'm not too worried about the chips, but the regulators do need their cooling.

[silicont]

Update on assembly refunds, already.  Thank you.  Merry Christmas.  Happy New Year.  More information please.

[miztic]

My miners showed up on Friday, they've been hashing ever since I got them hooked up friday evening.
Guess my refund issues have been resolved
hopefully they'll break even with 6 more months of hashing.

Thanks SteamBoat.

[cardcomm]

Hey Steamboat - Assembly refunds Please!!!!!!!!!!!!!!!!

[thegoldbug]

Hello!

My one miner finally arrived, the website still says my order is processing.


It was extremely well packed and included two extra PCI power cables - very nice detail.

It's seem strange that the power pins next to the micro usb port won't power the fan.

[newtothescene]

It's seem strange that the power pins next to the micro usb port won't power the fan.

I believe those are the fan headers - for controlling the fan speed.  The fan still needs to be connected to a power source to operate...

[ScaryHash]

Hello!

My one miner finally arrived, the website still says my order is processing.


It was extremely well packed and included two extra PCI power cables - very nice detail.

It's seem strange that the power pins next to the micro usb port won't power the fan.

[RogueLeader]

Hello!

My one miner finally arrived, the website still says my order is processing.


It was extremely well packed and included two extra PCI power cables - very nice detail.

It's seem strange that the power pins next to the micro usb port won't power the fan.

Those pins do power the fan (and control its speed).  Try disconnecting and reconnecting after providing power to the miner.

[Unacceptable]

Hello!

My one miner finally arrived, the website still says my order is processing.


It was extremely well packed and included two extra PCI power cables - very nice detail.

It's seem strange that the power pins next to the micro usb port won't power the fan.

Those pins do power the fan (and control its speed).  Try disconnecting and reconnecting after providing power to the miner.

Connect the fan AFTER the unit is mining,some sort of issue about connecting BEFORE the unit is mining.I personally power them separately,not from the board.

[logicbomb666]

Just a FYI for people having issues with fan control - I have been mining without the fans connected to the fan header, just connected to power, for a couple months with no issues.  I only have 2 miners and heat hasn't been a problem at all. So I would suggest not using the fan header if it isn't absolutely necessary as it seems to be a pain in the butt to get to work properly.

[Vigil]

Hey guys... I was curious to know how the heatsinks and fans are performing as far as temperature is concerned at stock and overclock speeds. I performed the CFD/Heat-transfer modeling on these to make sure everything was going to function satisfactorily and was interested to know how accurate my model was... I also feel partly responsible for the end product performance as well.

If I recall, my models predicted between 45-50C, assuming perfect contact with the thermal vias and I think the fan at almost full speed. How close was it?

[Rakessh]

Hey guys... I was curious to know how the heatsinks and fans are performing as far as temperature is concerned at stock and overclock speeds. I performed the CFD/Heat-transfer modeling on these to make sure everything was going to function satisfactorily and was interested to know how accurate my model was... I also feel partly responsible for the end product performance as well.

If I recall, my models predicted between 45-50C, assuming perfect contact with the thermal vias and I think the fan at almost full speed. How close was it?

Based on Ambient temp 20 or 25C?

With Ambient around 23-25 I see 50-54C in overclocked state (350MHz) and 44-45 in same overclocked state with same Ambient temp when thermal goop is applied sparsely (ie correctly).

I have additional table fan blowing across the miners' back side. If I recall this helps to get temps down 3-4C

[RogueLeader]

Hey guys... I was curious to know how the heatsinks and fans are performing as far as temperature is concerned at stock and overclock speeds. I performed the CFD/Heat-transfer modeling on these to make sure everything was going to function satisfactorily and was interested to know how accurate my model was... I also feel partly responsible for the end product performance as well.

If I recall, my models predicted between 45-50C, assuming perfect contact with the thermal vias and I think the fan at almost full speed. How close was it?

I'm seeing a bit higher.  My miners operating in a 22C room hover between 54-59, and my miners operating in a non-climate-controlled ~5-15C room run comfortably between 50-56, mostly on the lower end.  All @ 350 MHz with fans at 100%, but currently no auxiliary fans.

I recompiled cgminer's klondike driver to up cutoff temp, so still quite stable and manageable even if they are running slightly warm.

[Rakessh]

Yeah, forgot to mention that. I modified cgminer as well

[Kapz786]

BUMP....Assembly/Hosting refunds please...

[paulthetafy]

BUMP, our hosted miners, hashing away somewhere?  where's our income?  SOME INFO PLEASE!!!

[logicbomb666]

dang, i'm glad i requested my miners to be shipped as is once the option was available.  If I was still waiting on refunds of any kind at this point I would be livid.

[bigbeninlondon]

dang, i'm glad i requested my miners to be shipped as is once the option was available.  If I was still waiting on refunds of any kind at this point I would be livid.

Yea, I've had $270 assembly/shipping costs tied up in this since June.  Kind of a bitch.

[pixl8tr]

dang, i'm glad i requested my miners to be shipped as is once the option was available.  If I was still waiting on refunds of any kind at this point I would be livid.

Yea, I've had $270 assembly/shipping costs tied up in this since June.  Kind of a bitch.

9btc in Batch 6 assembly.   what a waste of BTC.  I am very disappointed not having a hint of a  refund months later.  A scammer rating in the works for SB from me.