HashFast launches sales of the Baby Jet - page 36.

crumbs

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Quote from: RoadStress on October 18, 2013, 01:28:17 PM

Quote from: cypherdoc on October 18, 2013, 11:15:33 AM

http://www.prweb.com/releases/2013/10/prweb11245642.htm

Really??? prweb.com? Last time when i saw them was this: http://www.prweb.com/releases/2012/6/prweb9611889.htm

What real company who raised 20 mil $ (correct me if i'm wrong) in pre-order phase releases something like this? Also...they signed an agreement to buy off the shelf PSUs? Because i don't think they will design a CUSTOM PSU. What a bunch of crap...

A PR article overflowing with fascinating revelations passed on to us by Hashfast's CEO. Consider these pearls of wisdom:

“We believe mining rigs should come complete with the best power supplies available” said HashFast CEO Eduardo de Castro. “The quality and reliability of the power supply has a critical effect on the performance of Bitcoin mining equipment. It’s well known that Sea Sonic is a clear leader in the power supply industry, and their products are widely known for their build quality, efficiency and reliability. Their reputation for quality extends over nearly four decades.”

"Tests of the Sea Sonic power supply show an incredibly stable output and longevity, even when machines are overclocked, enabling miners to generate more Bitcoin for their money."

"“It is a great honor to be working with Sea Sonic,” said de Castro. “We look forward to a long and fruitful relationship.”"

No, really, it's *all* like that.

bobsag3

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Quote from: DeathAndTaxes on October 18, 2013, 01:39:41 PM

Quote from: Wesly on October 18, 2013, 03:33:53 AM

CoolIT has already developed dual processor liquid cooling system back in 2010 that can dissipate up to 900 watts of heat. 2 of them should be able to fit in the new 4U chassis. With Overclock performance of over 500 GH per chips (according to Simon's post in the other thread) that is 2TH in a single box, same as Cointerra's TerraMiner IV... Speaking of which, you can see Cointerra's new 3D renderings of their 4U case design and see they use 1 large radiator to cool 2 ASIC chips. One can only dream!

One "issue" (only for a moder) with those preconfigured waterloops is generally they are sealed systems. You can't add an extra waterblock. So while the unit can handle 900W of heat you couldn't connect 3 waterblocks to it. Still based on the dimensions it does look like HF could use two waterloops like that to cool 4 boards per chassis (call it a 4 module Sierra or maybe give it a new name). Lots of interesting options.

I (maybe a minority) am more interested in a custom solution. Single large radiator, separate pump, separate reservoir and the ability to custom built a different solution. Using two "server" style power supplies (they tend to be thinner) one could maybe put 6 modules in a single chassis (4U).

Im with you.

Use off the shelf PC WC parts (pumps rads res etc). Server hot-swap PSUs etc. easy to do, and should not be that expensive at all (its all consumer grade stuff anyways)

DeathAndTaxes

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Gerald Davis

Quote from: Wesly on October 18, 2013, 03:33:53 AM

CoolIT has already developed dual processor liquid cooling system back in 2010 that can dissipate up to 900 watts of heat. 2 of them should be able to fit in the new 4U chassis. With Overclock performance of over 500 GH per chips (according to Simon's post in the other thread) that is 2TH in a single box, same as Cointerra's TerraMiner IV... Speaking of which, you can see Cointerra's new 3D renderings of their 4U case design and see they use 1 large radiator to cool 2 ASIC chips. One can only dream!

One "issue" (only for a moder) with those preconfigured waterloops is generally they are sealed systems. You can't add an extra waterblock. So while the unit can handle 900W of heat you couldn't connect 3 waterblocks to it. Still based on the dimensions it does look like HF could use two waterloops like that to cool 4 boards per chassis (call it a 4 module Sierra or maybe give it a new name). Lots of interesting options.

I (maybe a minority) am more interested in a custom solution. Single large radiator, separate pump, separate reservoir and the ability to custom built a different solution. Using two "server" style power supplies (they tend to be thinner) one could maybe put 6 modules in a single chassis (4U).

Visesrion

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Quote from: gateway on October 14, 2013, 11:57:54 AM

Ya cant wait to post some modular boards and just board stuff in general !

Why is HF waiting to post that photos ?

RoadStress

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Quote from: cypherdoc on October 18, 2013, 11:15:33 AM

http://www.prweb.com/releases/2013/10/prweb11245642.htm

Really??? prweb.com? Last time when i saw them was this: http://www.prweb.com/releases/2012/6/prweb9611889.htm

What real company who raised 20 mil $ (correct me if i'm wrong) in pre-order phase releases something like this? Also...they signed an agreement to buy off the shelf PSUs? Because i don't think they will design a CUSTOM PSU. What a bunch of crap...

crumbs

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Quote from: mgio on October 18, 2013, 11:57:37 AM

Quote from: crumbs on October 18, 2013, 10:26:14 AM

Quote from: dopamine on October 18, 2013, 10:21:03 AM

I feel like hashfast should do refunds if they cant ship on their deadline specially with the network difficulty soaring or ship with MPP when they do ship. HASHFAST HOW MUCH LONGER?

I think that's why so many people were making a fuss about the lack of PP/CC payment options. Hashfast's terms explicitly state that refunds will not be honored before Jan. 1st, 2014.

Legally, they actually have to give you a refund at any time before they ship if they deliver more than 6 weeks (not sure of the exact time) after ordering, unless they can give you an exact ship date.

The problem with paying by bitcoin is good luck in forcing them to give you a refund like you can if you paid by credit card.

I think the point of not offering CC/PP payment options is to make getting a refund harder, not to make it impossible. So you're right, even though the law may be on the buyer's side, most refund requests will be deterred with a simple "No Refund 4U!" terms the buyers is made to accept before purchase. Some buyers might go as far as an email, some as far as a phone call, and just a few diehards will follow all the way through. Profit.

mgio

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Quote from: crumbs on October 18, 2013, 10:26:14 AM

Quote from: dopamine on October 18, 2013, 10:21:03 AM

I feel like hashfast should do refunds if they cant ship on their deadline specially with the network difficulty soaring or ship with MPP when they do ship. HASHFAST HOW MUCH LONGER?

I think that's why so many people were making a fuss about the lack of PP/CC payment options. Hashfast's terms explicitly state that refunds will not be honored before Jan. 1st, 2014.

Legally, they actually have to give you a refund at any time before they ship if they deliver more than 6 weeks (not sure of the exact time) after ordering, unless they can give you an exact ship date.

The problem with paying by bitcoin is good luck in forcing them to give you a refund like you can if you paid by credit card.

cypherdoc

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Quote from: cypherdoc on October 18, 2013, 11:15:33 AM

http://www.prweb.com/releases/2013/10/prweb11245642.htm

i'm trying to find out exactly what "sign deal" means in terms of exclusivity.

sounds to me like "no other ASIC manufacturer will be allowed to purchase Seasonic PSU's in bulk for Bitcoin mining".

hence higher costs and lower quality for competitors.

cypherdoc

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http://www.prweb.com/releases/2013/10/prweb11245642.htm

winit

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I think it's time we had a Sierra specific thread... not for continuous griping about the probable lateness of the units but enable defined discussion on the product

crumbs

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Quote from: dopamine on October 18, 2013, 10:21:03 AM

I feel like hashfast should do refunds if they cant ship on their deadline specially with the network difficulty soaring or ship with MPP when they do ship. HASHFAST HOW MUCH LONGER?

I think that's why so many people were making a fuss about the lack of PP/CC payment options. Hashfast's terms explicitly state that refunds will not be honored before Jan. 1st, 2014.

dopamine

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I feel like hashfast should do refunds if they cant ship on their deadline specially with the network difficulty soaring or ship with MPP when they do ship. HASHFAST HOW MUCH LONGER?

cypherdoc

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Quote from: HashFast_CL on October 18, 2013, 05:30:11 AM

Quote from: Amy Woodward on October 18, 2013, 04:47:58 AM

Quote from: xstr8guy on October 18, 2013, 03:57:16 AM

Quote from: bobsag3 on October 17, 2013, 10:29:37 PM

I like the idea of Dual PSU, especially for expansion and failover

A Seasonic PSU would be the last thing to fail in this or any miner. I can almost guarantee you that HF aren't using two for failover purposes.

Correct, we're not using two for failover purposes, we're using two because we chose to provide a 20% safety margin on top of what the Sierra might need.

You say "20% safety margin" and I think "20% overclocking margin." Wink

i highly doubt they are going to take half of the psu's out just before delivery to save money. Tongue

DeathAndTaxes

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Gerald Davis

Thanks for all the technical details Simon it certainly clears up a lot of stuff. I agree on the choice of PSU vendor. Used SeaSonics to power a GPU farm and they worked flawlessly at high load in brutal conditions.

BTW any plans to sell just "naked boards"?

HashFast_CL

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Quote from: Amy Woodward on October 18, 2013, 04:47:58 AM

Quote from: xstr8guy on October 18, 2013, 03:57:16 AM

Quote from: bobsag3 on October 17, 2013, 10:29:37 PM

I like the idea of Dual PSU, especially for expansion and failover

A Seasonic PSU would be the last thing to fail in this or any miner. I can almost guarantee you that HF aren't using two for failover purposes.

Correct, we're not using two for failover purposes, we're using two because we chose to provide a 20% safety margin on top of what the Sierra might need.

You say "20% safety margin" and I think "20% overclocking margin." Wink

cypherdoc

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Quote from: Amy Woodward on October 18, 2013, 04:47:58 AM

Quote from: xstr8guy on October 18, 2013, 03:57:16 AM

Quote from: bobsag3 on October 17, 2013, 10:29:37 PM

I like the idea of Dual PSU, especially for expansion and failover

A Seasonic PSU would be the last thing to fail in this or any miner. I can almost guarantee you that HF aren't using two for failover purposes.

Correct, we're not using two for failover purposes, we're using two because we chose to provide a 20% safety margin on top of what the Sierra might need.

Quote from: Simon Barber on October 18, 2013, 12:16:01 AM

For our mining rigs we have chosen to specify power supplies that are rated 20% higher than the highest wattage we expect even including significant overclocking. The GN chip uses 250W at nominal, and we have designed all the systems to handle upto 350W. When the mini motherboard is supplying 350W to the chip (this level of overclock should result in up to 540GH/s) the mini motherboard may consume up to 411W of 12v, due to losses in the VRM. Add 25W for fans, and you get to 436W per mini-motherboard. Multiply by 3 chips in the Sierra, and you get about 1300W. We've added a safety margin of 20% extra on top of this - so we needed power supplies that were rated to a minimum of 1560W @ 12v to meet these specifications, and maintain the headroom and margin we desired to ensure reliable, efficient long term operation.

There are very few manufacturers who make single 1600W supplies, and we didn't find a single unit from a high quality vendor.

Now that's the real definition of margins on margins.

Amy Woodward

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Quote from: xstr8guy on October 18, 2013, 03:57:16 AM

Quote from: bobsag3 on October 17, 2013, 10:29:37 PM

I like the idea of Dual PSU, especially for expansion and failover

A Seasonic PSU would be the last thing to fail in this or any miner. I can almost guarantee you that HF aren't using two for failover purposes.

Correct, we're not using two for failover purposes, we're using two because we chose to provide a 20% safety margin on top of what the Sierra might need.

Quote from: Simon Barber on October 18, 2013, 12:16:01 AM

For our mining rigs we have chosen to specify power supplies that are rated 20% higher than the highest wattage we expect even including significant overclocking. The GN chip uses 250W at nominal, and we have designed all the systems to handle upto 350W. When the mini motherboard is supplying 350W to the chip (this level of overclock should result in up to 540GH/s) the mini motherboard may consume up to 411W of 12v, due to losses in the VRM. Add 25W for fans, and you get to 436W per mini-motherboard. Multiply by 3 chips in the Sierra, and you get about 1300W. We've added a safety margin of 20% extra on top of this - so we needed power supplies that were rated to a minimum of 1560W @ 12v to meet these specifications, and maintain the headroom and margin we desired to ensure reliable, efficient long term operation.

There are very few manufacturers who make single 1600W supplies, and we didn't find a single unit from a high quality vendor.

xstr8guy

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Quote from: bobsag3 on October 17, 2013, 10:29:37 PM

I like the idea of Dual PSU, especially for expansion and failover

A Seasonic PSU would be the last thing to fail in this or any miner. I can almost guarantee you that HF aren't using two for failover purposes.

Wesly

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Quote from: DeathAndTaxes on October 17, 2013, 09:35:58 PM

Yeah it does seem confusing. I can't see any reason for the second power supply.

One new thing is notice the usb port above the left power supply. It looks like it connects to one of the boards. So single usb port to board #1 and the boards 2 & 3 daisy chained off it.

As for a 4th module you could certainly mount a board but where are you going to put the watercooling radiator?

HF is the same water cooling radiator used for BabyJet with obviously only 1 used (2 if upgrade module is installed)?

CoolIT has already developed dual processor liquid cooling system back in 2010 that can dissipate up to 900 watts of heat. 2 of them should be able to fit in the new 4U chassis. With Overclock performance of over 500 GH per chips (according to Simon's post in the other thread) that is 2TH in a single box, same as Cointerra's TerraMiner IV... Speaking of which, you can see Cointerra's new 3D renderings of their 4U case design and see they use 1 large radiator to cool 2 ASIC chips. One can only dream!

   http://www.bit-tech.net/news/industry/2010/04/16/coolit-systems-provides-dual-cpu-liquid-coo/1

   "EPIC 180 X2 CLOSED-LOOP WATER COOLING
   Added to the mix is our exclusive EPIC 180 X2 closed-loop, maintenance-free, 50,000 hour watercooling solution. Able to dissipate up to 900 watts of heat from two processors"

cypherdoc

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Quote from: DeathAndTaxes on October 17, 2013, 11:38:25 PM

Makes sense is it is reasonably powerful unit (for off the shelf stock) and it is self cointained which makes bulk assembly easier. Still I do hope HF makes "naked boards" available. The H80i isn't exactly cheap at $80. Even if HF is getting an unbranded version for coolit for say $60 each there are three and that is a significant cost point to the total sytstem cost. I guesstimate the case at $60. If the power supply is 2x 660W they are $150 ea (if larger it will be even more). Toss in two intake fans at lets say $10 ea. So the balance of system cost in a Sierra the non-ASIC costs is are something like $600 (60 x 3 + $60 + $150 x 2 + $10 x2 = $560, round up to $600 for reduced labor and packaging). Sierra's current pricing w/o MPP is $6,300 so knock $600 off and it would be ~$5,700 for 3 naked modules or $1,900 ea (maybe $1,500 ea in bulk)? Sell them as naked modules and let the community come up with innovative solutions.

i think that's in the works.

Topic: HashFast launches sales of the Baby Jet - page 36. (Read 119626 times)