The Chili – 30+GH/s BFL based Bitcoin Miner Assembly

[Keefe]

mr teal,

great job on the project.

can someone post a list of the minimum equipment to get this running (excluding the host hashing system).

For example people are saying

thermal pads
vga coolers
case fans or cpu coolers

I just don't want to get this and have 2-3 days of downtime waiting for accessories to arrive. I assume heatsink and fan aren't included and a gpu fan is required.

a write up of compatible coolers etc in one location would be very helpful

thanks

You'll need a mini USB cable, a cooler, and a thermal pad. I'll be putting the Hyper 212 EVO coolers on mine, and I'm selling adapter kits (including the 11W/mK thermal pads) to mount those coolers nicely on these boards and also support them horizontally (such as on a shelf).

You'll also need a power supply that can push ~180W on a 6-pin PCIe connector. Ideally your computer's power supply has a 6+2-pin PCIe plug so you can be sure it's designed for at least 150W.

[oldbushie]

I got a 620W PSU for 4 boards according to MrTeal's recommendation, hopefully that's enough.

[Keefe]

I got a 620W PSU for 4 boards according to MrTeal's recommendation, hopefully that's enough.

What model? That seems like it could limit the overclocking potential.

[oldbushie]

I got a 620W PSU for 4 boards according to MrTeal's recommendation, hopefully that's enough.

What model? That seems like it could limit the overclocking potential.

This one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171068

The computer's on its own power, I just needed something for the miners. I didn't think about the power needed for the overclocking aspect, and I was looking for something affordable.

[Bargraphics]

I got a 620W PSU for 4 boards according to MrTeal's recommendation, hopefully that's enough.

What model? That seems like it could limit the overclocking potential.

This one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171068

The computer's on its own power, I just needed something for the miners. I didn't think about the power needed for the overclocking aspect, and I was looking for something affordable.

I got this one

http://www.amazon.com/gp/product/B008RJZQSW/ref=oh_details_o04_s03_i00?ie=UTF8&psc=1

and am only using it for 3 miners per PSU.

[ryanb]

i have a 600watt PSU that i have a blade connected to it and i plan to connect 1 chilli to the same psu it is bronze rated will it be enough?

[oldbushie]

Well, I suppose I could always buy a second one, if the first one isn't enough. I have plenty of computer stores near me with PSUs.

[Keefe]

I plan on supplying up to 200W (on the DC side) to each unit, so I can overclock the units as much as possible, at least for the first month. As difficulty increases, I'll downclock.

[ChipGeek]

I plan on supplying up to 200W (on the DC side) to each unit, so I can overclock the units as much as possible, at least for the first month. As difficulty increases, I'll downclock.

Yeah, 200W per Chili is a good budget.  At the moment the firmware goes for the maximum hashrate allowed for the cooling solution provided.  Colder - faster hashrate.  In the future, we'll release a new firmware that will further support underclocking to reduce power. 

As a couple of data points - in production we're using a TIM that is not very good but is very durable and Chili slows itself down to keep from overheating.  This gives around 20GH/s and under 150W.  But with a good TIM, we routinely are getting over 30GH/s and more than 150W.  Of course we cannot guarantee that speed for all boards, but it seems possible on the few we've tested.  Keeping the chips cool will get more hashrate.

[Spieder]

I see two power draws at the wall in the thread for 30ghz; 130 & 150 watts. Would you please clarify which one it is?

Any idea how much heat is actually produced by the 8 chips? From the BFL specs it would seem 8 would generate @ 100 watts at their normal operating voltage.

[Keefe]

I plan on supplying up to 200W (on the DC side) to each unit, so I can overclock the units as much as possible, at least for the first month. As difficulty increases, I'll downclock.

Yeah, 200W per Chili is a good budget.  At the moment the firmware goes for the maximum hashrate allowed for the cooling solution provided.  Colder - faster hashrate.  In the future, we'll release a new firmware that will further support underclocking to reduce power.  

As a couple of data points - in production we're using a TIM that is not very good but is very durable and Chili slows itself down to keep from overheating.  This gives around 20GH/s and under 150W.  But with a good TIM, we routinely are getting over 30GH/s and more than 150W.  Of course we cannot guarantee that speed for all boards, but it seems possible on the few we've tested.  Keeping the chips cool will get more hashrate.

What are your thoughts on cooling capacity of the Hyper 212 Evo vs the Twin Turbo II, with the 11W/mK TIM? I personally prefer the parallel airflow direction of the former. But I want to be sure I'm not limiting my hashrate.

[nexus99]

My cooling kit so far. Waiting on a back plate.

[oldbushie]

I plan on supplying up to 200W (on the DC side) to each unit, so I can overclock the units as much as possible, at least for the first month. As difficulty increases, I'll downclock.

Hrm, fine, ordered a second one. I'll just keep it handy just in case. Maybe if I make a custom replacement for the laptop it would come in handy. Though, what's the cheapest option that can stably run bitcoind, p2pool, *and* bfgminer? For now I'm content with using my laptop because I rarely use it but I would like a more long term solution.

[Keefe]

I plan on supplying up to 200W (on the DC side) to each unit, so I can overclock the units as much as possible, at least for the first month. As difficulty increases, I'll downclock.

Hrm, fine, ordered a second one. I'll just keep it handy just in case. Maybe if I make a custom replacement for the laptop it would come in handy. Though, what's the cheapest option that can stably run bitcoind, p2pool, *and* bfgminer? For now I'm content with using my laptop because I rarely use it but I would like a more long term solution.

The W/GH curve isn't linear. For example, going by some numbers I've seen, dropping from 38 GH to 35 GH could save 40W. That will be a good idea pretty soon.

[jelin1984]

  :)which final is the speed and the watt per board?

ALSO any step by step details
how we install the thermal pad and the cooler at board

[MrTeal]

Boards are going out as we speak, shipping will continue until they're all done.

[jelin1984]

Look great power hashing per board and watt per board?mr teal

[MrTeal]

Look great power hashing per board and watt per board?mr teal

Depends on your board and cooling. The firmware changes voltage and per chip frequency in order to maximize performance while keeping temperature in check.

[jelin1984]

For board with 16 chips?

[crazydownloaded]

I've some spare thermal pad 11W/mk, $2 + shipping for each (shipping from California).
Payments via Paypal only, shipping same day via USPS.
Each piece is 37x33mm (you normally only need 33x33mm)
PM me for details and purchase.

(The thermal pad is this one: http://www.frozencpu.com/products/16878/thr-164/Fujipoly_Extreme_System_Builder_Thermal_Pad_-_14_Sheet_-_150_x_100_x_05_-_Thermal_Conductivity_110_WmK.html?id=BTEHkam2&mv_pc=312)

I still have some pad left, left me know!