[Work in progess] Burnins Avalon Chip to mining board service

[RoadStress]

wow! how many chips will those boards support then?

Please keep this thread on topic. burnin will do a dedicated thread when he will have the time to play with birfury's chips, but until then he is busy with other stuff so don't ask him questions yet about this.

[Its About Sharing]

Burnin or anyone, how can you get a 2Ghash/s Bitfury chip to 5Ghash/s?

Barntech (the guy building the Bitfury miners listed above) said he got the chips to 2.7Ghash/s and they couldn't handle it any more.
Would you be willing to share this secret? 

[Its About Sharing]

and according to the thread above bitfury chip prices will be going up when sales reopen 

Up 270%!!!
That is why I asked Burnin about the overclocking to 5Ghash/s. Do the math, 2 to 5 is a 250% increase, but still less than 270%. Perhaps Bitfury are anticipating delays by some other manufacturers and hence lower difficulty rates (and higher prices)?

[CumpsD]

mswsock = communication (network)

winsock

[burnin]

My plan for the bitfury chips is to move from the group-buy model to pre-orders.
That way i would have a LOT less administrative work handling the orders.
The current prices on bitfurys site are for samples, I think.

Bitfury 55nm ASIC Chip samples. 1BTC/chip. Price adjusted weekly.

There will be a separate thread once i have more infos on the bitfury project.

[madmax_ger]

My plan for the bitfury chips is to move from the group-buy model to pre-orders.
That way i would have a LOT less administrative work handling the orders.
The current prices on bitfurys site are for samples, I think.

There will be a separate thread once i have more infos on the bitfury project.

perfect, thanks!

[kano]

and according to the thread above bitfury chip prices will be going up when sales reopen  

Up 270%!!!
That is why I asked Burnin about the overclocking to 5Ghash/s. Do the math, 2 to 5 is a 250% increase, but still less than 270%. Perhaps Bitfury are anticipating delays by some other manufacturers and hence lower difficulty rates (and higher prices)?

You got a link?
1BTC per GH/s is way over the top for a chip ...
They only cost like less than $10 per chip right?

Meh, Asicminer has done that ridiculous price (and 5 times higher), Avalon has done that, Bitfury now also?

I just wish people wouldn't pay these exorbitant (unlikely or never to get ROI) prices.

Amazing how many people are willing to part with BTC that they should know they'll never get back.

Projects like this (Burnin) and Barntech put the chip manufacturers to shame.

Pity the chip manufacturers don't care coz they know people will pay anyway.

(If the difficulty didn't rise, which of course it will in a BIG way as it keeps doing, 1GH/s currently only makes 0.00989772 BTC a day)

[southerngentuk]

and according to the thread above bitfury chip prices will be going up when sales reopen  

Up 270%!!!
That is why I asked Burnin about the overclocking to 5Ghash/s. Do the math, 2 to 5 is a 250% increase, but still less than 270%. Perhaps Bitfury are anticipating delays by some other manufacturers and hence lower difficulty rates (and higher prices)?

You got a link?
1BTC per GH/s is way over the top for a chip ...
They only cost like less than $10 per chip right?

• BITFURY ASIC chips - $25 each

Hey yes.

Exciting that we're almost there on the chip order. Looking good for this to happen smoothly (fingers crossed). We have been considering a second chip reel, but i just found out the new prices and they have gone up dramatically, so it's not really doable. We are really lucky we got the chips for the price we did. They are around 270% the price now. We would have to put the prices up a lot for a second reel, so probably just sticking to the one. Only 800 to go!

Not sure why such a steep Increase, I guess we will need to wait for chip sales to re-open for confirmation on prices however if true Burnin should consider carefully before putting too much effort into new boards..

[kano]

My $10 was referring to Bitfury to make them - but to then sell them (2.7GH/s) at 2.7BTC per chip ... ouch

[Its About Sharing]

Thanks for posting that southerngentuk. Would love to hear from Burnin on the overclock ability, per my question above.

Kano, Barntech was selling chips for $25 each I believe and then said they are raising prices 270% from there, which would probably kill a GB (he said).
But, when you go to bitfurystrikesback, their chips are listed under 5Gh/s and 1BTC each (as you said). So, is this a different chip or
(I see your comment on the $10 per chip now).

If the 2Gh/s chip goes close to 2.7Gh/s, then what would the 5Gh/s chip do (if I am understanding things correctly?)
And again, how Barntech get a 2Gh/s chip to 5Gh/s is beyond me. I had one of those Celerons (200a I think) back in the day and that is the best overclocker of all time, but it did nothing near the 2 - 5 range!

IAS

[pitchbend]

If the 2Gh/s chip goes close to 2.7Gh/s, then what would the 5Gh/s chip do (if I am understanding things correctly?)
And again, how Barntech get a 2Gh/s chip to 5Gh/s is beyond me. I had one of those Celerons (200a I think) back in the day and that is the best overclocker of all time, but it did nothing near the 2 - 5 range!

IAS

There's only one chip. That chip is named the "5Ghash" chip, but that's just a name, the performance of the chip is 2.7Ghashes. The name is misleading probably because that's the performance they were expecting when designing the chips but 2.7GH is the maximum they are able to get from them IRL.

[GandalfG]

Bitfury chip are projected for 5Gh/s After do first test on sample  reach max 2.5 Gh/s Somebody OC to 2.7Gh/s
For stability on his  H-board (16 chip) are downclocked to 1,7Gh/s We can try reach 3Gh/s but I don't believe in 5Gh/s.  I know Avalon overclock very good. (My work at 400 h/s under 1% HW) but Bitfury have problem inside silicon. Maybe in next gen.

[eraziel]

With avalon chips you get about 6gh/BTC with burnin's boards (that's purely CHIP PRICE, board price is not calculated)

20chips on BBXX = 9gh/s (450 mhz OC)
20 chips = 1.5 btc AVALON price (not going to calcualte for group buys + shipping etc.)

The BF chip is 3gh/s  so the price per chip should be less than .5 btc to match the gh/btc value of avalon.

However, if you have a board with BF chips similar to the BBXX = 20 BF chips = 60 GH/s with consumption 50watts (0.85w/gh based on the info on BF's site)

Power consumption compared to the BBXX is half and hashing power is 6.66 times greater so the BF chips are 13 times more power efficient than avalon's meaning you can mine with profit at a 13 times higher difficulty compared to avalon chips.

If BF's chips can hash at more than 3gh/s with burnin's design that would just be extra incentive ...

Also, another advantage is the hash power density which is 10 times higher with BF chips = of real importance to people who are looking to own larger amounts of hashing power and even more so if you are going to host your devices at a data center that charges based on rackspace used.

And in the end, if there's enough interest and burnin gets enough preorders (though the mention of preorder by him made me cringe) he can decide if it is worth his time to work on design for BF chips or just refund everybody.

[Foofighter]

I would suggest to stop OT here until burnin opens up a new thread for Bitfury design.

[SebastianJu]

20chips on BBXX = 9gh/s (450 mhz OC)

You can run it at 450MHz but that doesnt resolve to 9GH/s for me. Till now i didnt find a setting that can do this. And it looks like the temperature the chips have are changing the needed mV to get the best Hashrate, so in theory each Temperature should run its own mV to get the maximum possible hashrate.

[northcape]

20chips on BBXX = 9gh/s (450 mhz OC)

Till now i didnt find a setting that can do this. And it looks like the temperature the chips have are changing the needed mV to get the best Hashrate, so in theory each Temperature should run its own mV to get the maximum possible hashrate.

Where did you get that from? My 50 chips (20/20/10) run fine at 450 Mhz, 1.330 mV (it seems to overvolt slightly?) and cgminer "d" timing. Rejects and HW errors are reasonable. Temperature is around 47-49°C. I’m stuck on the old firmware because of a broken USB connector or my hashrate would be closer to the theoretical 22.5 GH/s.



I have a feeling that these chips would much higher with better cooling but burnin’s (slightly crude) cooling implementation is hard to beat for price/performance.
Putting fancy copper/heatpipe heatsinks with expensive TIMs on them would probably not make sense from a financial standpoint.

[kano]

I think I need to put the MHz there and one temperature.
Time for another change ...

[burnin]

You can run it at 450MHz but that doesnt resolve to 9GH/s for me. Till now i didnt find a setting that can do this. And it looks like the temperature the chips have are changing the needed mV to get the best Hashrate, so in theory each Temperature should run its own mV to get the maximum possible hashrate.

have you added the --queue 4 setting to the command line?
That is important to get close to theoretical performance.
My tests showed hashrates very close to 9ghash @ 450mhz for a single board.
Didn't test high OC with a cluster yet though.

I really have to do a MAX-OC test with a single line of chips to find out the real limits.
(maybe even more then 500Mhz)

OC headroom is also chip-dependent, some chips are just better then others.
(One reason why i want to push for individual-per-board OC settings in future firmware revs)

[Its About Sharing]

Is there an ongoing doc available (or link) on the overclocking settings for when we get our Burin rigs?
(Something specific to these rigs).

edit - Also, has anyone played with this setting? "--avalon-auto       Adjust avalon overclock frequency dynamically for best hashrate"
I haven't read the whole thread but curious how this compares to manual...

Thx,
IAS

[eraziel]

20chips on BBXX = 9gh/s (450 mhz OC)

You can run it at 450MHz but that doesnt resolve to 9GH/s for me. Till now i didnt find a setting that can do this. And it looks like the temperature the chips have are changing the needed mV to get the best Hashrate, so in theory each Temperature should run its own mV to get the maximum possible hashrate.

Well, for me it does: