I've been considering the best way to determine a sweet spot for my avalon...  currently running at 343 (it just "feels" like a nice balance between hashrate and HW errors), but now I'm getting that overclocking itch once again.

I'm trying to devise a method that is slightly more scientific than my gut feel. Perhaps it could even be integrated into some kind of algorithm that could be added to the firmware to improve the auto speed setting? I don't know if that's even possible. Also I'm not really sure what a lot of the numbers mean in the web interface cgminer status tab, so I'm just guessing at a lot of this. Corrections to my assumptions/mistakes would be appreciated.

So, I'm just guessing at what all those numbers really mean, but here's what I'm thinking.

if:
HW = Hardware errors
Diff1Shares = equivalent number of shares if submitting at difficulty 1 (not sure whether to use this or DiffA ? )
MHSav = MH/s average

then:
EHR = Effective Hash Rate = MHSav - ( MHSav * ( HW / Diff1Shares ) )

So, what I'm gonna do is just keep increasing or decreasing my Frequency until I can find maximum EHR. Makes sense?

Hello everyone,

I have spent some spare time designing and coming up with a new design for Avalon's existing batch 1 and 2 designs, since, in my opinion, Avalon's case design is good engineering-wise, but design-wise, quite unfulfilling.

I want to check with the community and see if there sufficient interest for such a product, and I have contacts with many local suppliers that could be able to build these with a 3-4 week lead time approximately.

I am a full-time professional industrial designer and have worked on a wide variety of products, ranging from kitchen and wine accessories, toys, furniture, transportation and much, much more.

Here are a few images for you guys to ponder :

http://www.3dpxl.com/clone/highrez/ High resolution pictures available here.


Front view.


Rear view.


Side view.


Interior.


Exploded view of all components.


Overall dimensions, in millimeters.

Some key features : The chassis is built from two sheets of steel (or stainless steel, to be determined), and has custom-made machined aluminum faceplate. You would receive the chassis and simply take your existing Avalon PCBs, cables, components, and screw them in place. The case is a little wider than Avalon's current design - but the advantage here is having the ability to mount this chassis in a standard rackmount space.

There are still a few details to iron out, but I would say 90% of the job is done and, depending on the reaction I receive here, I will ask suppliers to provide quotes for 20, 50, or 100? of these and check back here with you guys.

In the event that I do start a crowd sourcing project for this I will gladly accept Escrow payments, and provide sufficient information to verify my identity to JohnKay or any person of authority on these forums.

If there isn't much interest for an Avalon chassis, I am also open to hear from you if you would rather have a Klondike housing, Burnin housing, or BitFury ?

Cheers.

Please note our goal is not to undercut other asic manufacturers. But our goal is to stay competitive with prices for the international market. Plus giving our local community the option of getting an asic without having to pay the extra Import tax. And on top of that, we will be helping the South African and African bitcoin Foundation with funding and assistance where we can, and also providing them with monthly support. That is why we say, For the community, By the Community

Other then buying a new Jupiter, upgrading a Saturn order seems like the most cost-effective way to increase your hashrate.  No one knows what the difficulty will look like in Sept/Oct through. There's going to be raw Avalon chips, Bitfury, etc plus possibly dark projects hitting the network by then. Anyway we have until august to decide.

Just got mine up and running, i was happy i checked it before running it. there was a lose screw in there from the fpga board. found a second one that was not tight too.
PsychoticBoy beat me to the pic.

Its sounds like a fun experiment.   Have you visited these forums? 3m-novec-7000-group  They have posted  data and some conclusions on using Novec cooling fluids for servers and other electronic devices.

Hey guys, just made a first custom housing design, take a look here:
https://bitcointalk.org/index.php?topic=255737.msg2723873#msg2723873

regards

Not totally sure if I'm using http://www.bitcoinx.com/profit properly but it seems to me ROI should be expected after around 100 days (in my case).

Here is a revised sheet with product lifetime profits at today's prices and an Aug difficulty of 64 Mill on the manufacturers top end hardware

I have updated the document to have multiple sheets along with Comparison between Multiple ASIC Hardware Vendors Vs Difficulty Sheets.

Combined Multiple Sheet Document https://docs.google.com/spreadsheet/ccc?key=0AmeuPljmUNHCdEpqX2RmMDFwemJyLURVUWFtZ3J3aGc&usp=sharing

Anyone see this nice Bitcoin difficulty predictor? Looks like October might bring a difficulty over 100 million!
https://docs.google.com/spreadsheet/ccc?key=0AmXn4BnLUgYsdEF0TUtWUWtUaUUzR1F2aUhEWW9lN2c#gid=0
I can't imagine pre-ordering for October at the same price and Gh as August. Again 25Gh orders further out should be cheaper as with the 400Gh model.

thats the worst attempt to block your order numbers. hahahaha

For those of you planning heatsinks, Intron provides a good reference.

http://imgur.com/gUMVK0b

PS: You are looking thru the board from the top side.
Don't make the 'mirror error' too often made:) --Intron

Spent all of yesterday going through the firmware code, there is a trick people are missing. Uses some information from the github as well.

We undervolted the boards for heat & power considerations.  No heatsinks are necessary, though we do expect supplemental fan cooling to be necessary - they put off about 250 - 300w fully loaded, so yeah you need to blow air on them.  We didn't see the need for extensive heatsinks and individual fans that just add cost, maintenance and noise.