Topic: DRILLBIT SYSTEM Miners - Avalon range available - Now $104.99! - page 99. (Read 273811 times)

My plan is 1 box fan worth of CFM per 1kw of power usage for my personal farm/hosting.
There is  Seasonic 500w that is 80+ gold or plat, and is a fantastic supply for this type of operation. Me, Im using
http://www.corsair.com/en/power-supply-units/ax-series-power-supply-units.html

Got ~2 on hand and ordered another 8 for hosted machines. Gotta love 50% off.v

Thanks for the information. I looked up that Scythe and it looks perfect (and potentially quiet).
Questions:
- How many would one need for 4 boards with backplane? The fan is roughly 5" X 5" and not sure how big the 4 boards would be (from the side, where I think I'd put the fan to blow across boards all at once).
(edit - I found Barntech mentioned this a few pages back "102mm x102mm for the 8 board (will fit in a hdd bay)" Not sure on the spacing in between the 4 boards, but one fan might cut it, thoughts?)
- Which model (rpm's) - I see 850, 1450 and 1850. I heard you can control the speed on them with a voltage regulator but how do we do that with just a power supply? Maybe from the Raspberry pi?
- Suggestions on how to mount them near the boards?

BTW - While we are sort of on the topic of power supplies as well, a 4 card setup is only going to use 64 watts (if ran at 2 watts per chip) and maybe up to 80 watts (if ran at 2.5 watts, near max, per chip). I'm not even sure if getting a 350-400 watt power supply is too big. Most power supplies talk about efficiency at 20% (minimally). Well, a 400 watt ps would be running at 90 watts there. Can they even run this low? I don't see any 200 watt or so power supplies like I do the 350-400 watters. I like the new corsair rm450. Would run silently at this level, if it can run this low.

Thanks again for the ideas. Hopefully this helps others as well.

IAS

More power usage. You will allready need a PSU for the boards, so why not use 3/4 pin fans.

I was thinking of putting a desk fan next to the boards to blow the hot air away from the boards..
Is there any reason we shouldnt be using a desk fan?

+1 for the Scythe's. I will be using more than a few of those.

Not sure if it would provide enough airflow for these Bitfury chips, but I'll be trying some Nexus Real Silent 120mm fans. It's cheap, it has good static pressure considering it's moderate speed of 1100RPM, and it's pretty quiet even at full speed. SPCR has been using it as their reference 120mm fan for at least seven years now, for good reason.

http://www.silentpcreview.com/article695-page2.html#nexus

Scythe Gentle Typhoon would be another good option.

Barntech/Guys&Gals

Does anyone have a suggestion on a fan to use to cool 4 boards on the backplane? (Dimensions? Brand? type? Etc?)
Like a lot of you I will be overclocking the boards and would like to add a fan to them. Would rather have the fan before the unit arrives.

So, looking for a relatively silent fan (Miners are in home) to go with my yet to be purchased silent Power Supply. 

Thanks,
IAS

Hello Barntech,

by "express shipping" you mean UPS/DHL/FedEx shipping or just and "express" option by simple post service? Usually (at least USPS - I faced with this once) can not guarantee you really express shipping worldwide - there is a "small-font-remark" like "only withing the US" (for USPS).

Cheers.

Hello Barntech,

I just paid .78 BTC ($95) for express shipping to Germany.
Sent signed PM and forwarded email order.

Do I still need to place the shipping order through your website or is the above enough? (Hopefully this question helps another.)
Sorry for the overkill. 

Thanks,
IAS

I ordered a THumbdrive on friday via paypal.

My email is monsieurmarc at btinternet dot com
I am more than happy for you to post my details in a list if you choose to.

Regards
 Marc

Love it when a plan comes together.

Great idea!

So i was going to publish the order queue, but realised that for pretty everyone who paid via paypal, i don't have your forum names and your real names lined up. I figure some people might not want their real names published, so i won't be publishing the order queue right now. Can people please send me your real name and forum name together if you paid by paypal. In the meantime, if you are eager to know your place, write to me and i'll tell you.

Barntech

I will send boards to Luke Jr once we have them made. 

In general, trying to keep the two separate. For all batch one shipping payments, please pay though BTC to the batch one address, or send money via paypal to [email protected].

Cheers

Barntech

Is there any way to incorporate the shipping of my Batch 1 buy of two thumbs into my Batch 2 buy I made today?

Spotswood has the design files and is working on a case. Thanks Spotswood. Excited to see what you come up with.

So I asked Luke-Jr about BFGMiner Support for the Drillbit boards at some point...here's his reply:


I've pointed him to the Drillbit GroupBuy thread and I was hoping we could get something started here.

Anyone care to donate a thumb and a board to Luke-Jr so we can get BFGMiner support too at some point?

No, product is still in development. You don't need a miniplane for a single board.

I've been trying to figure it out with all the post but couldn't.   Is this product ready to ship or is it an late October item like a lot of them?   Looks very promising for $460 getting 21 G/hash.   Do we need the miniplane for one?

Thanks.  Good day.