Topic: [ANN] Sfards:SF100, the first 28nm Dual-Mode Miner is accepting pre-order now - page 62. (Read 129811 times)

Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

Quote from: pekatete on May 01, 2015, 07:01:50 AM

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

That's like saying cars cost less to buy if you're a good driver.

No, it's not. A poorly designed power supply can end up costing a lot more than a well designed one. The car analogy is nonsense.

You're arguing that off the shelf components cost more 'if you design them wrong', which doesn't make sense. If however you were trying to say that 'if you design the system wrong, and use more components than you should...', then sure but that's not what we were discussing.

We already know if that if you use 10 gold ingots to wedge open a door, its going to cost more than if you were to use 5 gold ingots to do the same job, its just a given. What we were actually discussing was the merits of using gold ingots to wedge open a door in the first place.

DC to DC components do have a cost, but the design as a whole can be more efficient (power efficiency and ROI wise) than without.

No one said anything about comparing high amp DC-DC to no DC-DC. But now we are, are you actually trying to argue that string design on small chips makes them less efficient and more expensive?

Quote from: Bicknellski on May 01, 2015, 11:16:27 AM

Big difference between being openly hostile and slagging the competition and having a vigorous debate about the potential of this chip.

Says the guy who entirely just ignored the entire debate to attack me? Roll Eyes

Dexter770221

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Quote from: ?? on ??

.....
Really neat, but we still don't know if this is at the wall yet?

It's a chip datasheet. "At wall" depends on many factors. DC/DC converter and PSU efficiency. So, if thats not specified all data covers only chip.

Bicknellski

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Quote from: brontosaurus on May 01, 2015, 08:13:57 AM

Quote from: pekatete on May 01, 2015, 07:01:50 AM

Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

Quote from: pekatete on May 01, 2015, 07:01:50 AM

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

Only if you don't know how to design them properly.

Keep your drivel to the bitmain threads!
DC to DC components do have a cost, but the design as a whole can be more efficient (power efficiency and ROI wise) than without.

Let the man speak. It's good to have discussions so that the community at large can get a variety of opinions, then make up their own mind as to what's information and what's drivel. Maybe that way some of the drivel might disappear.

And you're absolutely right about the overall efficiency of a product, very good insight.

See? You've probably to taught a good few readers to think differently about design.

If you ignore Adam then you can just cut to reading what people that are not bent on shilling for another company have to think. Big difference between being openly hostile and slagging the competition and having a vigorous debate about the potential of this chip.

Thanks to those that cut through his bullshit. Just stop quoting him so I don't have to read it.

brontosaurus

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Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

That's like saying cars cost less to buy if you're a good driver.

Keep your drivel to the bitmain threads!
DC to DC components do have a cost, but the design as a whole can be more efficient (power efficiency and ROI wise) than without.

Let the man speak. It's good to have discussions so that the community at large can get a variety of opinions, then make up their own mind as to what's information and what's drivel. Maybe that way some of the drivel might disappear.

And you're absolutely right about the overall efficiency of a product, very good insight.

See? You've probably to taught a good few readers to think differently about design.

pekatete

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Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

That's like saying cars cost less to buy if you're a good driver.

Keep your drivel to the bitmain threads!
DC to DC components do have a cost, but the design as a whole can be more efficient (power efficiency and ROI wise) than without.

brontosaurus

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Activity: 441

Merit: 250

Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

Quote from: brontosaurus on May 01, 2015, 05:34:52 AM

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

That's like saying cars cost less to buy if you're a good driver.

No, it's not. A poorly designed power supply can end up costing a lot more than a well designed one. The car analogy is nonsense. Most electronic engineers are not familiar with high current low voltage power supply design, its a specialist area and needs careful selection of components, not to mention circuit board tracking that provides very low resistance paths (and connections). But the world is full of 'experts', is it not, and that's why shitty designs often result. People simply don't accept their limited knowledge of technical subjects and so don't read enough.

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I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

That's like saying cars cost less to buy if you're a good driver.

brontosaurus

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Quote from: bennybong on April 30, 2015, 06:44:05 PM

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

Only if you don't know how to design them properly.

notlist3d

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Not that I am a fan of litecoin, but being able to mine both at the same time is a pretty cool feature. If all ASICs use this technology in the future then the litecoin network will become bigger and bigger... Maybe LTC isn't dead and useless after all?

I was a huge fan of scrypt at one time. That was until the gear dropped over night on worth. I almost lost some serious money.

Luckily I rented whole time I had machine so I did ROI..... but was tightest margin I've ever had.

I'm more interested in BTC specs personally.

bennybong

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Not that I am a fan of litecoin, but being able to mine both at the same time is a pretty cool feature. If all ASICs use this technology in the future then the litecoin network will become bigger and bigger... Maybe LTC isn't dead and useless after all?

philipma1957

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'The right to privacy matters'

I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

The commonality of components doesn't make them cheap. High amp DC-DC is expensive.

if you want hi amp low ripple and 92% or more efficiency they cost.

somewhere I read a 20 chip machine if it can not clock under the .6 volts the low setting will give .4 watts at the wall like the sp20's do on super low clocks.

not impressed so far but maybe I am missing something or just a bit burnt out by asic gear.

dogie

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