ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level

[DigitalPackrat]

Coming up on 24 hours since I sent a email to AM and just like the other countless times I have sent them emails there has been no reply.

For all of you praising AM, this is the third time compensation has been promised. The deal looks great and they have managed to make many of you think they are a great company standing behind their products and taking care of their customers but there is no follow through. Just a bunch of empty promises.

[richardamullens]

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.

[dogie]

Coming up on 24 hours since I sent a email to AM and just like the other countless times I have sent them emails there has been no reply.

For all of you praising AM, this is the third time compensation has been promised. The deal looks great and they have managed to make many of you think they are a great company standing behind their products and taking care of their customers but there is no follow through. Just a bunch of empty promises.

Do you exactly expect them to file and respond to 1000 emails in a day? Its just PB being bombarded with emails, give him a chance to work through them. I received a response late last night.

[sidehack]

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.

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.

Adding the core voltages to the GH/W table would still be quite nice. That would help people get a jump on figuring out designs for these chips.

[Dexter770221]

So, how chained chips board performs?

[friedcat]

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.

[friedcat]

So, how chained chips board performs?

No data yet. But soon.

[friedcat]

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.

[sidehack]

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.

That's what I figured, the FET would act as a dummy load shunting extra current when the chips were underloaded in order to keep the string powered properly. Still like to see a hashrate/voltage chart or formula.

[dogie]

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.

Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.

[klondike_bar]

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.

perhaps looking into 48V power supplies wouldnt be a bad idea? Effectively driving 4x12V chains in series. I imagine the lower currents in the PSU and lower change in voltage may give good efficiency and perhaps lower cost.

for smaller miners though, 12V pcie connection is best. hobby mining isnt really meant for anything under 300W anyways, and there are some good, cheap 450W power supplies available in most countries

[dogie]

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.

perhaps looking into 48V power supplies wouldnt be a bad idea? Effectively driving 4x12V chains in series. I imagine the lower currents in the PSU and lower change in voltage may give good efficiency and perhaps lower cost.

There's no point chasing marginal savings if we're going to pay out of our asses for power infrastructure that doesn't exist. That is, in regards to scale, maturity, availability and cost.

[richardamullens]

Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.

Exposed terminals - shock horror - and why the shouting ?

You should lie low after having recommended duff 12V supplies.  We're talking reliability here.

[dogie]

Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.

Exposed terminals - shock horror - and why the shouting ?

You should lie low after having recommended duff 12V supplies.  We're talking reliability here.

1) Yes, exposed terminals on a beginner's device is not a good idea - that should be obvious.
2) What do you mean shouting?
3) What 'duff' 12V supplies? You mean the ones on Amazon, that sell 100s a month and have a 4+ star rating?

[Blazed]

Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.

Exposed terminals - shock horror - and why the shouting ?

You should lie low after having recommended duff 12V supplies.  We're talking reliability here.

1) Yes, exposed terminals on a beginner's device is not a good idea - that should be obvious.
2) What do you mean shouting?
3) What 'duff' 12V supplies? You mean the ones on Amazon, that sell 100s a month and have a 4+ star rating?

I agree on exposed terminals - bad idea for beginners. I really like the Rock Miner 100GH unit, but it needing a computer PSU sort of makes it border line beginner friendly in my opinion. If AM could make something that uses a power brick and had a built in controller similar in size to the RM device...that would be the perfect unit for newbies! Or make it USB based to keep prices down, and have a simple GUI for cgminer/bfgminer included on a disc.

Edit: Hate to say this, but something like that software BFL used

[hurricandave]

There would be no need to create a GUI if the driver support was provided to CKolivas and merged with mainbranch CGMiner instead of creating another fork that gets abandoned 3 months later too never be updated again like what Rockxie has done over at Rockminer.

[Blazed]

There would be no need to create a GUI if the driver support was provided to CKolivas and merged with mainbranch CGMiner instead of creating another fork that gets abandoned 3 months later too never be updated again like what Rockxie has done over at Rockminer.

Well for new people to mining having to use cgminer could be a little confusing. I am not saying fork anything just have a front end for it that is simple.

[richardamullens]

Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.

Exposed terminals - shock horror - and why the shouting ?

You should lie low after having recommended duff 12V supplies.  We're talking reliability here.

1) Yes, exposed terminals on a beginner's device is not a good idea - that should be obvious.
2) What do you mean shouting?
3) What 'duff' 12V supplies? You mean the ones on Amazon, that sell 100s a month and have a 4+ star rating?

1)You are the first person to have suggested that this is a beginners device in this thread - One other person used the term introductory.
2)Shouting - the use of capital letters.
3)Yes the ones on Amazon that you get commission on that people said failed after a short time.

You have made a number of loud negative remarks in this thread showing a lack of respect for other people's opinions.
This time you use bold type to emphasise your opinions.
The discussion in this thread has been about obtaining samples, making boards, FETs, power supply efficiency.
You are out of order Dogie

Let's keep this to talk about engineering and assuming a level of competence.

[dogie]

There would be no need to create a GUI if the driver support was provided to CKolivas and merged with mainbranch CGMiner instead of creating another fork that gets abandoned 3 months later too never be updated again like what Rockxie has done over at Rockminer.

Well for new people to mining having to use cgminer could be a little confusing. I am not saying fork anything just have a front end for it that is simple.

Yes, I agree. I miss the days of even GUIMiner.

[Luke-Jr]

I haven't tried them, but there are a number of GUIs available for BFGMiner (yes, including BFL's EasyMiner - which should work for any supported device).