Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 196. (Read 576776 times)

Our boards are designed for max efficiency.  They are running the chips at exactly the most profitable value point watts/dollar.  If you want more hashes you should buy more hardware.  Now that being said, a lot of people don't look at it this way - this is a perspective more suited to a very large private mining operation that intends to run far into the future.

Its true that our boards are hardwired to a certain clock frequency.  We've got them running about 440Gh/s gross hashrate.  After errors, tested nonce rates are seen at 410 - 415Gh/s.  That's probably about all you are going to get out of them.  You can gain some watts efficency by turning them down...certainly this will become a factor some day, depending on what you pay for power.

I know there is a *lot* of interest for an overclocking rig and I'm working on it.  Can't share details yet, as I'm under NDA, but something cool is coming.

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...

well this is what buzzdave said, if the chip is capable of 2.5-3GH why would they clock it at only 1.5GH? it makes no sense, also i remember reading that the 400GH in the description is just that a description, the actual hashrate is higher per the chip the actual hashrate capabilities?  No?

anway all remain same but using 400GH in the calculation over same 12 months, this turns into a money loser generating $7590.89 over 12 months: ~$400 loss

#2 chips are capable of over 3Gh/s under highly controlled conditions, but our boards are underclocked in order to avoid issues described many times in this thread.

I'm making no promises here, but Tytus is seeing peaks of 130+ Gh/s from his 4 card rig.  This could be just a phenomenon of pool stats.  I see 101 Gh/s at this time.  He's sending to Slush, so I can't provide a link to the stats

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.

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 is even higher in the calculation?  

Not clear..

Where are you getting 600GH from??

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.

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

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

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....

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

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: 600,000  (600 GH)  - again very reasonable assumption given the per chip hash power stated by buzzdave
Profitability Decline: 0.009
Time Frame: 12 months
USD/BTC: 110 
Ignore all power usage cost etc..

RESULT:  $11345.29,  minus the $8000 hardware cost, ~ $3300 profit 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...