Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 193. (Read 576936 times)

The boards do not have the power circuitry in place to OC to 600GH/s. You might get 3-5% as was hinted but new boards would need to be developed to really push the chips.

and just how are you going to overclock it with every piece of it at it's limit? liquid nitrogen? voodoo?  

surprised so many people dont like the 600GH number, that was one of the easier assumptions. BuzzDave has said multiple times in this thread and even their website indicates the chip is capable of 2.5-3GH per, the $8000 kit has the per chip hashrate at only 1.5GH.  At 600GH it's about a 50% increase from the kit description which rates the chip at 2.3GH per - i thought that was a very reasonable assumption.

Or are you guys saying 600 GH is too low and i should increased the hash rate even higher in the calculation?  

Not clear..

With many who have already paid in full for preorders, I see it as unlikely that the preorder payment model would be changed now.

Why not 50% pre order payment,  and the remainder when you have a product to ship?   If you do that im in for a couple starter kits....

I seem to recall Dave mentioning 3% a ways back.

If you can call it that, considering it was done based on 1.5X the expected hashrate


ps: do we have any idea how much (or at all) the H-boards can OC? I know we are limited by power, but is there any margin to push it up by 5-10% with little or no change to voltage?

Apart from the 600GH/s nonsense, this is one of the better ROI evaluations I have encountered recently.

From what I understand, the current board design does not lend itself to substantial overclocking. I would not bank on that
in your ROI evaluation.

Overclocking I assume

Where are you getting 600GH from??

Here's my latest calculation based on current stats for oct end delivery, very difficult decision either way.  However credit must be given to buzzdave and team on how they handled the retail sales so far, compared to avalon/bfl/terrahash etc..it's night and day.  

1) Assuming a 35% difficulty increase per 2016 block until Nov 1st delivery, this is very reasonable considering the massive amount of hashpower coming online during that time from all the asic hardware delivery from asicminer/bfl and avalon chips etc..not to mention the large farms coming online.

Starting difficulty at Nov 1:  50,000,000 * 1.35 *  1.35 * 1.35 * 1.35 * 1.35 = 224,000,000

2) Assuming btc price remains flat at average ~$110, also a reasonable assumption given the price history for the last few months.

3) Assuming only a 15% difficulty increase per cycle thereafter over the next 12 months from Nov 1 2013 to Nov 1 2014.  I think this is a very conservative estimate given the amount of asic hardware/development coming online, lets just assume best case scenario and things will level off in the next 12 months and averages out at 15% per increase

Profitability decline for 12 months:  0.00948604

4) Putting it all into the final calculator with a starting date of Nov 1st per above:  

Bitcoin Difficulty: 224,000,000
Hardware Cost:  $8000
Hash Rate: see below
Profitability Decline: 0.009
Time Frame: 12 months
USD/BTC: 110  
Ignore all power usage cost etc..

RESULT1 using 600GH:  $11345.29,  minus the $8000 hardware cost, ~ $3300 profit over 12 months.  

RESULT2 using 400GH:  $7590.89, minus the $8000 hardware cost, ~$400 loss over 12 months.

Of course it is a given if the difficulty per cycle goes up by even 1-2% profit will be wiped and if actual is lower then more profit, same goes for $ per btc etc..

again this is just my best estimate based on reality not some fantasy numbers...

As i said, very tough decision buy or not...

Yes * 6
He's working on it - nothing to worry about.  October is a long ways away...

Is everyone else still waiting for Dave to take payment by credit card?
My order is still not paid

:Pats self on back:  Amazing what too much coffee, a closeup internet photo of a chip, and google can achieve.   

That's it. If you only ordered a Starter Kit you will need to add H-CARDs in October to get some sort of ROI. A lot of H/s will be added to the network in these two months.

Needs lots more than just +1.  More like +1000000

Great. Sooner the better ;-)

Thanks for updates Dave.
I really do hope some "other" ASIC manufacturers take note on how to properly run business and especially dealing with customers from this thread!

Factory M-boards tested fine, BTW.  These are v1 units and will go out to customers only if I can't get my ver 2.2 M-boards made in time.