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1  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 25, 2015, 08:03:51 AM
The auction ends.

Phasebird will reply with winners and PM them with payment addresses.

If you did not win, please also stay tuned for the PM, because if some winners do not pay,
the winner list will be adjusted.
2  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 25, 2015, 06:57:41 AM
Beware!A user firedcat was pmed me.
It said i got the bid and pay the BTC
Be careful.
Plz post pm using quote feature so that we can deal with scammers. Ty!
here is the image:http://holland.pk/ifm5sw8j
Beware!

The PM should be received from Phasebird.
3  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 24, 2015, 07:02:23 AM
The ending time is 08:00:00 AM, January 25, 2015.

Please help edit the main thread or delete my first and second replies.

8AM GMT?
Yes. Same as the forum time.
So only about 24 hours left.
Sorry, 25 hours.

Anyway it's GMT, the same as the time shown in upper-right corner of the forum webpage.
4  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 24, 2015, 06:59:58 AM
The ending time is 08:00:00 AM, January 25, 2015.

Please help edit the main thread or delete my first and second replies.

8AM GMT?
Yes. Same as the forum time.
So only about 24 hours left.
5  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 23, 2015, 08:01:27 AM
The ending time is 08:00:00 AM, January 25, 2015.

Please help edit the main thread or delete my first and second replies.
6  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 23, 2015, 07:59:39 AM
starting unit price: 0.3BTC
minimum unit price bidding increase: 0.01BTC
minimum quantity: 20
total quantity: 200
ending time: 08:00:00 AM, January 25, 2015
7  Economy / Auctions / Re: Block Erupter Prisma2.0 Auction: Round One on: January 23, 2015, 07:58:45 AM
starting unit price: 0.3BTC
minimum unit price bidding increase: 0.01BTC
minimum quantity: 20
total quantity: 200
ending time: 08:00:00 AM, January 15, 2015
8  Economy / Auctions / Block Erupter Prisma2.0 Auction: Round One on: January 23, 2015, 07:55:56 AM
Block Erupter Prisma2.0 (Prisma) is a major revise over the original Block Erupter Prisma (old Prisma). The 500-Prismas-scale stress testing showed that the devices are running stable without unstability/overheat from which some of the old Prismas suffer. Protection against violent shipping is also added.

Spec and Manual
The specification is similar to the old Prisma, but there are some form factor changes:

size: 36.7cm x 16.4cm x 16.4cm
weight: 7.5kg
hashrate: 1.35TH/s to 1.48TH/s (depending on PSU output voltage and clocking)
power: 1.05kW to 1.25kW (depending on PSU output voltage and clocking)
clock: 230MHz to 260MHz (ranging from 11.5V to 12.5V of different PSU output voltage with full load)

Prisma:


User Guide:
https://drive.google.com/file/d/0B11fvFT7Sd5bWkc5R2Joek9LNjg/view?usp=sharing

Auction Rules
starting unit price: 0.3BTC
minimum unit price bidding increase: 0.01BTC
minimum quantity: 20
total quantity: 200
ending time:

To bid, please reply with the format:

(qty)@(unit price)

For example, if A bids 200@0.2, and B bids 50@0.3, then after the auction ends, A needs to pay 0.2 each for 200-50=150 Prismas, and B needs to pay 0.3 each for 50 Prismas.

After the bidding ends, the winners will be listed. Each winner will be PM'ed with a Bitcoin payment address by forum id Phasebird. If some of the winners do not fulfill the payment request within 24 hours after the PM, the winner list will be renewed by deleting the winners who do not pay and shifting the rest bidders upwards. Then the new winners will also be PM'ed with Bitcoin payment addresses and required to pay within 24 hours after the PM. This process continues until all the Prismas are paid, or the winner list is exhausted.

Shipping, Extra Details and Customer Service
Shipping will be done within 48 hours after payment. Shipping fee is already covered in the price.
Shipping to US is via UPS or DHL by default.
Shipping to EU and other places is via DHL by default.
Please reply the payment request PM with what price you want us to declare, and what shipping
company you would like to choose if you do not like the default choices.

For every 20 Prismas, 5 ethernet controllers and 1 redundant Prisma will be provided. If you need more controllers, please pay 0.069BTC more for each. If you need less controllers, please pay 0.069BTC less for each.

If the number of defected boards is higher than the number of boards on the redundant Prismas, please contact Phasebird by PM or help@bitquan.com by e-mail for shipping back details. We cover free replacement within 180 days after receiving based on records from the shipping company.

Happy bidding!
9  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: January 19, 2015, 08:16:07 AM

Okay 155 gh  x .27 = 42 watts   once you figure psu in  47 watts .

lets say 5x =

    775gh at 235 watts on the low clock.
  1365gh  at  576 watts on the high clock .
 this is a 120 chip design.

right now I can buy the sp20 for under 400 usd.

It will do 970gh at 450 watts

the s-5 will do 1300gh on overclock at 676 watts  cost shipped right now is 342 usd if you have a coupon.

For a 120 chip AM to be worth buying it needs to come out soon and be cheap.
  At least the board did decently (not .2 watts) more like .3 or .33 watts. 
The sp20 can do .46 via underclock.

Price of 120 chip design should be in principle at 230-250 usd w/o the PSU.

If the mid-term future Bitcoin price allows significant quantity, the end-game price can be below 200 usd.
10  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: January 18, 2015, 06:09:12 AM
24 chip (6 chip chain x 4) test result posted.
The mosfets and big capacitors are safely removed due to the constant workload of BE300.



Results:

273.60GH/s | 0.38W/G
176.64GH/s | 0.31W/G
155.04GH/s | 0.27W/G
118.56GH/s | 0.26W/G

With more accurate control on the variance between chips we could in principle gain less power consumption in advance.
11  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 19, 2014, 04:09:53 AM
FC, you can probably dispel a little confusion here. The MPW samples you have and are testing are not in the same package as the final chips will be in. The production chips will look significantly different than the test chips, and the board package will be different.
Is that correct?
BE200 -- QFN 8x8 or 9x9
BE300S -- FCLGA 5x5
BE300 Final Version -- FCLGA nxn (n not determined yet)

QFN in a low voltage setting introduces too much overhead, so although we wanted compatibility hard, we chose a different package.
12  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 18, 2014, 06:30:23 AM
Will the BE300 boards fit into the Prisma fan/heatsink body?
The package turns from QFN to Flip-Chip-LGA, which means that
most heat dissipates to the upper side of the chip instead of PCB,
so... not very appropriate to stick to the piple-like heat dissipation
design.



13  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 17, 2014, 04:18:05 PM
The 6-chip chain has passed the test:

The next step is to test the board with fully inhabited 24 chips.
Funny, I just wanted to ask how test of chained chips board are comming Wink
Results?
We are waiting for a compilation of data set.

But 7.2GH/s per chip is already achieved, so at least the chain is stable.
14  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 17, 2014, 04:04:46 PM
The 6-chip chain has passed the test:



The next step is to test the board with fully inhabited 24 chips.
15  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 13, 2014, 10:43:24 AM

look into, i think Delta's, laptop/desktop external PSUs, they hit the 87-90% but they are a higher voltage DC.
There is also nothing wrong with using a PCIe power adaptor off a desktop internal PSU

Perhaps domestic drivers for LEDs would be a good choice - if they produce 12V and don't try to drive a constant current.
Will do the study. Very interesting.

12V is also not a must. We only need to adjust the chain length.

All mining devices try to draw constant current anyway, so if they try to drive constant current it's also OK.
16  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 13, 2014, 10:21:30 AM
So, how chained chips board performs?
No data yet. But soon.
17  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 13, 2014, 10:21:15 AM
So, all the level shifting IO lines and clocking and such? Handy. I'll have to take a closer look at a Prisma board to see exactly what the FET would be doing (I have ideas). I am looking forward to the release of documentation.
Yes. The LDO output for IO and PLL are included as well.

The FETs help balance the voltage. For BE300 we may not include them, but we need experiment to see if it's true.

18  Bitcoin / Hardware / Re: Block Erupter Prisma Compensation and Buy-back Plan on: December 13, 2014, 09:38:24 AM
I will be handling all US based returns for ASICMiner. If you are shipping from the US, please contact me via PM for further information on Prisma returns.
Confirmed.
19  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 12, 2014, 07:07:21 AM
I think something small like Rock Miner did was pretty cool (the 100GH unit). Maybe make a pod like Bitmain...something that does not require a computer PSU to run.
The problem is that there may not be widely available high efficiency power bricks.

Competing with 70% efficiency bricks agains professional miners with 92% efficiency PSUs is hard.
20  Bitcoin / Hardware / Re: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level on: December 12, 2014, 07:00:36 AM
Yep, good data (especially on the function of the PMIC) would be pretty nice, at least to get a rough idea of feasibility.
The PMS01 IC provides all the functionalities needed except the mosfet for chaining the chip into a string.

For the one-chip board, we still choose to use it instead of a bunch of buffers and LDOs for board simplicity.
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