Topic: HashFast announces specs for new ASIC: 400GH/s - page 514. (Read 880461 times)

"... the X-850 is simply another excellent member of the X-Series of power supplies from Seasonic and users won't go wrong picking it up as it is generally better overall than any of the closest competition (Corsair AX850, Corsair HX850 Gold, and SilverStone ST-85F-G Evolution). At the end of the day, the decision is probably going to go in favor of the X-850 above those competitors if the prices are within ~$15-20, or so, of each other."

Seeing as HashFast is picking up the tab for the power supply, I'd say X-850 is good decision for the customers.

 

these will be well worth the wait.

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. In addition this size of supply is more expensive than 2 smaller supplies. The Sea Sonic supplies are really well built, and even significantly overbuilt. In all tests they are capable of supplying power well above their ratings, and the output regulation is very accurate and smooth. They handle hot operating environments very well. Please go read the reviews of the supplies in the Sierra - the Sea Sonic X-850FM3.

http://hardocp.com/article/2013/04/04/seasonic_xseries_x850_power_supply_review/9#.UmDCKVCcc5g
http://www.kitguru.net/components/power-supplies/zardon/seasonic-x-series-850w-km3-power-supply-review/7/

Each GN chip is on it's own mini-motherboard, and each mini-motherboard has 2 separate 6 pin PCI-E power connectors. Each of the supplies feeds 3 of these connectors.

Why two power supplies?  How are 3 modules connected to two power supplies?  Are they producing redundancy?  If so how is that achieved? Is each power supply connected to each board (would imply two power connections pwe board)?  Wouldn't one large power supply be sufficient, cheaper, and take up less space?

Yes, I got two questions on this already so let me clarify: there are three modules in that image of the Sierra. Two are on the bottom layer (side by side), and one module seated above.

This let us have better airflow in the case (and more room for the SeaSonic PSUs).

wow, that's a very cool setup that i hadn't even seen.

notice 2 of the modules are stacked.  1 of the radiators is flipped upside down to accommodate this stacked setup.  also, i'm glad to see that 2 of the fans have been moved to the back to provide exhaust.  also note that we have 2 Seasonic PSU's in place to drive the 3 modules.

good job!

Amy,

Any ETA on seeing the Batch 2 BabyJet order chain on the website?

https://hashfast.com/were-upping-the-power-on-hashfast-rigs/

Lol, u got pwnt by BFL & come straight over here  A decent feller, just can't catch an even break

as eve would say...  'where are the chips???'

As much venom as I spat in the BFL threads at least I had orders and refused refunds and chargebacks.

Peeps with no cash in game trolling is pure loser trollish

Well as far as I am concerned anything after october 30th I would consider as late

Don't worry about my time, or who hired me -- the tinfoil and a string of garlic should keep you safe.  And wtf are you talking about?  What chart?  You were perfectly clear when you said "chips by October 17."  Nothing ambiguous, no chart needed.  If there's a chart on the page i've linked, feel free to rub my nose in it, otherwise stfu, k?

Amy, let me rephrase it for you:  I had to ask the same frickin' question eight times, and eight times have been ignored.  And when i got a reply, it wasn't an answer, it was an insult.  Learn to manners plox

why you so full of malice?  there is a chart that shows Oct 17 as the earliest possible date in a range of dates.  they're late.  nothing i can do about it.

i'll ask again, crumbs.  why do you hang out here so much when you don't have any miner orders?  certainly your time is worth more than just trolling?  or is it?  or perhaps you're getting paid to troll?  who's hired you? 

your orange button shows you're doing a good job of it.

Maybe I'll post a bit about the mysterious Sierra Controller.

(drum roll please.....)

...

...

"The Controller" is simply a computer that can run cgminer, and has a USB port.

That's it.



We're recommending it be a linux box, but other than that it could be most anything: Your desktop. That old laptop that's been sitting in your closet for the last few months. A 1U (or 2U, if you prefer) linux server that is rack-mountable. Or even a Raspberry Pi.

Though until we can do more testing, we don't know how many Sierras a single Raspberry Pi could control.

A single Sierra is a 1.2THash/sec machine, remember. So the difficulty setting you choose has a lot to do with how chatty that Sierra will be. (We obviously do not recommend using a difficulty level of 1 or 2 on a Sierra. It'd be a waste.)

So, if you want, you can BUY a low-end linux server to act as the controller for the Sierra(s) that you have bought. (And of course, with every order of 10 or more we provide that controller.)

But it's quite probable (if you're a geek) that you already have a computer around that you can plug your 1.2 THash/sec Sierras into.

Sucks being caught in a lie, huh?   Just promise to stick around & let me gawk.  Don't vanish as soon as it dawns on you that while you were conning everyone else, you've got suckered too.  
Pre-ordered my popcorn from your competition, don't make me waste it

Of course, maybe there is nothing else going on today. Just another day on the forums.

Cheers,
Amy

Trolls are funny.

This is what, the eighth time you've posted this hour? The eighth time in one hour you repeat what you hope is an embarrassing question?

The process at the foundry is going well. Someone posted an optimistic date, one I personally did not approve of nor condone. (Sorry, cypherdoc.)

And I cannot give any other dates for the foundry. I can tell you when they pop out of the oven, nothing sooner.

But honestly the foundry is not important, because that is not what will ultimately delay us. That delayed component is what is pushing our date out. Funny that you harp on the foundry when you could be harping on delayed shipping instead.

I do wonder - what else is going on today, that these repeated 'embarrassing' posts are supposed to distract us from?

Amy

.... Who is somewhat regretting her decision to hang out on the forums this afternoon.

P.S. If people DO have other questions about HashFast, please feel free to send them my way.