Block Erupter Prisma (>=1.4 T/device, 0.75-0.78 W/G, <1 BTC/T, October Shipping)

[Blazed]

Do any of you get your news from sources beyond this forum?  Did you not read that friedcat and company operate finances out of Hong Kong (China blocks BTC thru banks)?  

Let's think...what's going on right now in Hong Kong?  Additionally, this forum is blocked in mainland China, so likely the only time they're posting updates, they're in HK.

https://www.google.com/search?q=china+hong+kong&safe=off&espv=2&source=lnms&tbm=nws&sa=X&ei=kEJYVK7gC8uvogTMm4LgBA&ved=0CAoQ_AUoAw&biw=1293&bih=678&dpr=0.9

Lets see they are sold on this forum...why would they not post info here about them. Is email also blocked in China? There is no excuse to not update the place you sell at. Anyways in other news I scored a Prisma and it arrives in 2 days!

[praeluceo]

FYI, for anyone not following the other details. Although our order of 10 Prismas has not arrived yet, a customer has shipped 7 that they received to our hosting facility. So it seems perhaps that phasebird and ASICMiner are focusing their efforts on satisfying their group-buy and reseller partners initially.

Considering the high entry cost, I hadn't anticipated that they would have overwhelming demand, and would have been better able to reply to individual buyers, even smaller resellers such as ourselves, clearly I was mistaken.

The issue behind the Prisma delay stems from an issue with the BE200 chip, and if you missed it, here is friedcat's exact post in the other forum:

Update

Development
The 28nm BE300 engineering batch tapeout was in September 16 with TSMC.
The power efficiency is 0.225W/G to 0.343W/G ranging from core voltage of 0.55V
to 0.70V. The two main mistakes made in BE200 were dedicatedly addressed and
avoided in the whole design stage so we do not expect surprise in frequency and
power consumption in real products.

14nm/16nm projects are at pre-evaluation and pre-design stage. It has to be done
in 2015 but the starting time of placing orders depends on overall gain vs (NRE/R&D/risks).

Led by Block Erupter Prisma, a series of efforts to reduce component-wise
cost and system-wise power efficiency were made.

Production
As known by OEM producers, several large batches of BE200 had problems with
popping chips affecting whole boards due to the misoperation from the packaging
company. It hindered afterwards chip sales and delayed the starting time of
Tube/Prisma sales. Later supply of BE200 has no such problem and filtering process
on old BE200 is also underway.

Because of the non-open-source status of Prisma and high cost of all other designs, BE200
sales were stopped. Rest BE200 chips will likely be consumed by Prisma and succeeding revises.

The mass production time of BE300 in terms of chip-out date is February to March, 2015.

Operation
As sales were seriously hindered by unexpected yield issue of BE200, we had missed many
dates with financing the big mining farm of our own. It is still hopeful that all good BE200
will be turned to hashrate before too late and we have liquid profits again before BE300, but
from the big picture, the missing of target on BE200, the mis-judgment on OEMs and later
yield/financing problem, limited our expansion and profit in this year. But luckily R&D on later
products is not much affected.

AM will continue to develop new products, expand its mining farms, deliver machines to miners,
as well as make money for shareholders.

There is no any foreseeable plan from AM side on force buy-back, dumping, or any
activities on the open stock market. There is no plan of privatization either. The management,
R&D, sales as well as marketing is being more and more separated and dedicated to professionals,
but the founders will continue to be heavily involved and drive AM in the more and more competitive
market. Scenarios of BE100 vs graphics card may never happen again, but we need catch
any opportunity on timing window of leads at either technology or deploying/financing resources
to win the last battle when mining is still an under-capitalized game.

[Blazed]

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

[tutorialevideo]

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

when did you order and how many?

[mrpark]

No, and no. Lepa 1600 is a 6 rail system and 1200xi is not enough I believe, and if it was it wouldn't be efficient enough operating at max capability (correct me If I am wrong). I have not tried it, but perhaps it MIGHT barely work on the 1600w. I just bought a LEPA 1600w and they are shipping them now with unshielded cables. Not sure why they ship different cables with these now, but they got hot and I feel they are unsafe for this type of mining.

The best option I see for the price is the EVGA 1300 G2 (I just bought one $188 on amazon), it has to be hooked up a certain way (see crazyguys thread). Philipma came up with the idea, and it works. You have 6 cables, there are 4 with one PCI-E, but there are 2 cables with double PCI-E. The trick is you have to have one connector from each of the double PCI on each board. The regular single PCI-E plug right in.

This miner will SURELY heat your garage. Buy one for the basement too to heat your house I was thinking of attaching an empty copper pipe from the prisma to the pipe on my that connects my baseboard heaters. = free heat...

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

[SEGMining]

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

We use 2x 750w PSUs to power the prismas in our co-location facility.

[ferncreekminer]

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

We use 2x 750w PSUs to power the prismas in our co-location facility.

Doing the same with mine; 2 x EVGA G2 750W PSU work great.

[mrpark]

but the EVGA G2's cost on amazon is $118, x 2 would be $236. A single 1300 G2 would cost only $189.  If you already have a few 750w G2s already then it would make sense.

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

We use 2x 750w PSUs to power the prismas in our co-location facility.

Doing the same with mine; 2 x EVGA G2 750W PSU work great.

[ferncreekminer]

I'm reusing the 750s  that were powering my BTC Gardens - at the time they were quite a bit cheaper that going with a 1300W.

but the EVGA G2's cost on amazon is $118, x 2 would be $236. A single 1300 G2 would cost only $189.  If you already have a few 750w G2s already then it would make sense.

So my Prisma is out for delivery and the question is: Will a Corsair 1200AXi be good enough for this, or should I use a LEPA 1600. I have several of each PSU here, but the Corsair is Platinum versus LEPA gold. I bought this for a garage heater since it is getting cold!

We use 2x 750w PSUs to power the prismas in our co-location facility.

Doing the same with mine; 2 x EVGA G2 750W PSU work great.

[Blazed]

Well I suppose 2 x Corsair 1200AXi will do the trick  I have some Silverstone 1500s also, but those are no better than the LEPA.

[mrpark]

I also have Silverstone 1500w, the problem is they only have four 8 pin connectors.  Yes, if you had two of them it would work but would be a little overkill.

Well I suppose 2 x Corsair 1200AXi will do the trick  I have some Silverstone 1500s also, but those are no better than the LEPA.

[vortexz]

they keep promising but don't deliver
we might have a problem here!
I finally talked with phasebird on QQ after a month of delays, he said he will send them today, I still got no tracking number

[Blazed]

they keep promising but don't deliver
we might have a problem here!
I finally talked with phasebird on QQ after a month of delays, he said he will send them today, I still got no tracking number

That sucks man  I picked up an In hand Prisma here on forums for 1.25BTC. Once they are actually in stock I might snag more if they drop the prices some.

[Joebrann]

@Friedcat, I am very interested in multiple rigs but i cant use your site can i get some help.

[Blazed]

Is there any type of Rasp Pi image available with a nice web interface for these? Or just use wheezy and cgminer?

[ferncreekminer]

I am pretty Minera image should work; as long as it has the latest CGMiner -  the newest CGMiner has Prisma support included - no need for the special AM fork.
I am using mine with BE Controller thru BFGMiner proxy & using Awesome Miner for monitoring.  Getting graphs from MRR...
Waiting on usb-uart so I can get it going with RPi w/ Minera

Is there any type of Rasp Pi image available with a nice web interface for these? Or just use wheezy and cgminer?

[sdjernes]

Is there any type of Rasp Pi image available with a nice web interface for these? Or just use wheezy and cgminer?

CrazyGuy was talking about making a Minera image for the RPi but I do not know where he is on it.

[terrapinflyer]

Has anyone replaced the insanely loud fans on these units? Im looking for a solution cause the old lady is not going to put up with it all winter.

[Blazed]

Anyone using the USB adapters? cgminer can not find the miner...so I hot plug and nothing but errors  

I have verified with Grapeape I have the dip switches and cables correct. I compiled cgminer-4.7.1 using --enable-blockerupter

I am using latest wheezy on a rasp pi and just tried it using a powered hub with same result.

[bigredbutton]

Has anyone replaced the insanely loud fans on these units? Im looking for a solution cause the old lady is not going to put up with it all winter.

Hopefully there is some sort of solution maybe one that involves installing another fan to help with the push pull?