ANN: BITMAIN has Tested Its 28nm Bitcoin Mining Chip BM1382

[ernie-]

Not a great price. It should be lower. Need to wait for second batch.
Hope you guys checked the ROI after 15days.

Depends where you live, if you have cheap electricity you might make ROI. I won't not at 30cents per kWh.
When it ships on July 10th. the diff will be around 20bill, and there is probably at least half a dozen more diff increases before you get your 0.75BTC back, so your profit ends up being mostly in the resale value of the S3 in 4mths time.

[klondike_bar]

Can someone explain what this means please...

"Don’t parallel connected different DC input from different PSU into the same Hashing board."

Or if already discussed just tell me and I'll look back through the posts for it. 

Thanks

basically means 'dont connect PSU1 12V to PSU2 12V (and same for GND)' since that can create a huge range of issues.

some supplies might handle it okay, but if (for example) the GND of one supply is actually 0.01V or its 12V is 12.3V and the 2nd supply is a correct 0V/12V the difference in voltage will cause the power supplies to send current through the lines to eachother in an attempt to reach equilibrium. This results in one/both of the supplies failing, cord fires, or the Antminer blowing caps or burning out its traces.

a seperate PSU per blade should be fine, as long as they dont share and 12V wiring.

[allcoinminer]

Can someone explain what this means please...

"Don’t parallel connected different DC input from different PSU into the same Hashing board."

Or if already discussed just tell me and I'll look back through the posts for it.  

Thanks

Antminer S3 is packet with 2 PCI-E slots in each PCB(blade).
You may connect one blade with a psu and the other blade with another psu. Then just link the common of both.
There is no power loaded from controller to 1 blade or viceversa so its safe to use 2 PSUs.
There will be no harm in doing it. But never ever connect the PCI-E connector of one PSU
to a blade and a PCI-E connector of another PSU to the same blade.
That's what the statement means.

[klondike_bar]

Can someone explain what this means please...

"Don’t parallel connected different DC input from different PSU into the same Hashing board."

Or if already discussed just tell me and I'll look back through the posts for it.  

Thanks

It means make sure the cables you use are the same DC input. So use the same PSU brand and model and you'll be fine.

Not a good solution. Even if you had two 450W power supplies of the same brand and model # there could be differences between the units. As mentioned before, if the 12.3V of one PSU was linked with the 11.9V of the 2nd PSU, you could see a huge amount of problems resulting from one power supply basically forcing 0.4V into the other supply.

Antminer S3 is packet with 2 PCI-E slots in each PCB(blade).
You may connect one blade with a psu and the other blade with another psu. Then just link the common of both.

IMO even the common ground should not be linked between power supplies, at least not without using a multimeter first to ensure that they are true 0.0V ground and not +/- 0.1v

[Biodom]

Can someone explain what this means please...

"Don’t parallel connected different DC input from different PSU into the same Hashing board."

Or if already discussed just tell me and I'll look back through the posts for it.  

Thanks

It means don't use two PSUs to power a single board (each board has two PCIe connections).. The voltage differences will throw the board out of whack..

so, I assume that using a PCIe split cable (like in CX750M or CX500M) is OK or just use the first connector of the split for each board if using CX750M?
Some people were discussing using 8pin or molex-to-PCIe adapters. This might not work, or still OK if on the same PSU?

[klondike_bar]

Can someone explain what this means please...

"Don’t parallel connected different DC input from different PSU into the same Hashing board."

Or if already discussed just tell me and I'll look back through the posts for it.  

Thanks

It means don't use two PSUs to power a single board (each board has two PCIe connections).. The voltage differences will throw the board out of whack..

so, I assume that using a PCIe split cable (like in CX750M or CX500M) is OK or just use the first connector of the split for each board if using CX750M?
Some people were discussing using 8pin or molex-to-PCIe adapters. This might not work, or still OK if on the same PSU?

all the 12V wires on the same supply can be linked however needed and it will be safe. The issue is when different power supplies have different 12V voltages and start having a tug-of-war over the voltage difference.

be careful with molex-to-pcie adapters. a lot of them have thin wires that cannot handle the high power draw of bitcoin mining equipment. Spending an extra $20 on a better power supply than the 500W will usually give you enough connectors and will often be a little more efficient and long-lasting. 650W or better supply is suggested if you need to draw 400W over the 12V rail

[toxic1978]

Now i`m getting worried.

I sent my order through for 2 s3`s and now my order has expired without it being acknowledged.....

Dito!

I put 1 order through for 2

then 5 minutes later another 2

The second order went through almost immediately but the first has expired with no confirmations :s

Bitmain are pretty trustworthy,they'll sort this i'm sure!

As i thought, bitmain have manually sorted it for me already

How did they sort it out? Do you mean it shows "Paid"? Does it say "Expired"? Because mine says paid and expired.

Yep. Dont panic, all will be fine 

[Mudbankkeith]

Now i`m getting worried.

I sent my order through for 2 s3`s and now my order has expired without it being acknowledged.....

Dito!

I put 1 order through for 2

then 5 minutes later another 2

The second order went through almost immediately but the first has expired with no confirmations :s

Bitmain are pretty trustworthy,they'll sort this i'm sure!

As i thought, bitmain have manually sorted it for me already

How did they sort it out? Do you mean it shows "Paid"? Does it say "Expired"? Because mine says paid and expired.

Yep. Dont panic, all will be fine 

Maybe Bitmain should increase the time allowed for completion from 60 mins to 90 mins?

[cereal7802]

I hope they get to mine soon. it expired before it could confirm properly.

[maxwellga]

On bitmaintech.com product page, it now says: "shipping will start between July 10th and July 20th."
Are they planning to keep mining them longer to improve their profit at our expense, or just too many S3's sold to ship all out right away?
As one still being screwed by BFL and Black Arrow, I was so impressed with Bitmain that I've got 7 S1's, one S2, and ordered 4 S3's.
I really hope they ship soon, rather than keep mining them first.

[hurricandave]

The problem with confirmations on Bitmain site is an issue related to Blockchain and how its API interacts with their servers.

[Mudbankkeith]

On bitmaintech.com product page, it now says: "shipping will start between July 10th and July 20th."
Are they planning to keep mining them longer to improve their profit at our expense, or just too many S3's sold to ship all out right away?
As one still being screwed by BFL and Black Arrow, I was so impressed with Bitmain that I've got 7 S1's, one S2, and ordered 4 S3's.
I really hope they ship soon, rather than keep mining them first.

In the past, Bitmain has managed to deliver earlier than the advised date.

Lets hope they come good on this again.

[mdude77]

This is probably the best difficulty prediction out there:

https://bitcoinwisdom.com/bitcoin/difficulty

It currently calculates with ~19% on the next jump, which seems pretty plausable.

It's way too early to accurately predict the next difficulty change.

M

[DevonMiner]

The problem with confirmations on Bitmain site is an issue related to Blockchain and how its API interacts with their servers.

YEP! It happens all the time ... especially when they are busy ... and an S3 launch day IS A BUSY ONE. I too have an order placed which shows paid/unshipped/expired. Not stressed though, BitMain have proved over time they sort these issues out and honour the orders.

[MoneyMuscles]

bought 2!!!

[allcoinminer]

Bad timing for me.
Seems like this thread sunk in the sea of S3.
http://bitcointalk.org/index.php?topic=671128

[MMXIV]

We are raffling off two S3 units - https://bitcointalk.org/index.php?topic=671686

Good luck!

[JakeTri]

Bitmain - can you confirm that these have been tested & are working on p2pool?

Please.......?

Pretty Please  ... ?

[fragout]

opps

Washington-based MegaBigPower (MBP) is North America’s largest mining operation. The mine, which generates millions of dollars worth of bitcoin per month, began developing its franchisee network earlier this year. Now, the company is planning a broad expansion effort that could add as much as 50 PH/s in mining power per month to the network.

[1Neptune]

Anyone else try and order through BITMAINtech on facebook to get their $400 coupon offer?