HashFast announces specs for new ASIC: 400GH/s - page 507.

DeathAndTaxes

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Gerald Davis

Quote from: Syke on October 21, 2013, 12:41:19 PM

You don't want to mix-n-match cables. If you have 2 power supplies feeding to a single board and one power supply dies, the board will try to pull double the load from the other power supply. Bad things happen.

Well HashFast didn't design the system for redundant power supplies (it would require much higher output power supplies = higher cost) but pulling double load from one power supply won't necessary "bad things". It would cost more but if each power supply had sufficient capacity to handle the full load then the system could operate just fine on one. When both PSU are operating the load on each one will be half. If one shuts down the other will handle the full load. You gain redundancy, and higher efficiency at the expense of more power supply cost. If one PSU fails the other will run at 100% load until the first PSU is replaced.

Gyrsur

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Quote from: DPoS on October 21, 2013, 03:10:48 PM

Quote from: tacotime on October 21, 2013, 03:01:13 PM

Comment jockey, although I also offered to go down to CIARA to report back on the progress on the boards and assembly there

sounds needed... btw I confused thinking they were in TX.. I have no clue where they are

pic anywhere? sabber. ;-)

DPoS

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Quote from: tacotime on October 21, 2013, 03:01:13 PM

Comment jockey, although I also offered to go down to CIARA to report back on the progress on the boards and assembly there

sounds needed... btw I confused thinking they were in TX.. I have no clue where they are

RoadStress

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Quote from: tacotime on October 21, 2013, 02:48:28 PM

I still haven't heard back from Samantha about employment... I'll probably forward my resume to Amy later today and try and figure out what's going on and if they still want me for support.

They must be busy taking picture of PCBs.

tacotime

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Quote from: DPoS on October 21, 2013, 02:51:50 PM

Quote from: tacotime on October 21, 2013, 02:48:28 PM

I still haven't heard back from Samantha about employment... I'll probably forward my resume to Amy later today and try and figure out what's going on and if they still want me for support.

what type of support? local in TX? or just comment jockey?

Comment jockey, although I also offered to go down to CIARA to report back on the progress on the boards and assembly there

DPoS

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Quote from: tacotime on October 21, 2013, 02:48:28 PM

I still haven't heard back from Samantha about employment... I'll probably forward my resume to Amy later today and try and figure out what's going on and if they still want me for support.

what type of support? local in TX? or just comment jockey?

tacotime

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I still haven't heard back from Samantha about employment... I'll probably forward my resume to Amy later today and try and figure out what's going on and if they still want me for support.

Minor Miner

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Be A Digital Miner

Has anyone tried calling Hashfast lately? I wanted to get some information and maybe buy a November machine (and make sure it is still a November machine) and all I got was voicemail after some really strange transfers on the phone system.

DPoS

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Quote from: Gyrsur on October 21, 2013, 01:52:35 PM

no I mean is it possible to move the fans lower easy. put pressure on top of the fans or how did he do it?

EDIT: he has to fix the fans somehow or not? Huh

don't try at home kids! Cheesy

As we KNCers all know, the way they had the fans on fell off anyway in transit.. and if you built a lot of PC rigs you seem to see that airflow around the CHIP is what matters, not just cooling some bare metal inches away

and yes, the extra airflow around the PCB for the VRMs is very nice as well

to do this, just lay the fan on the crossbar and slightly push the tip of the shroud top in the 4th opening of the heatsink fins - stays happy. You could add some electrical tape if you like

For Hashfasters, it is good to think what's best for your miner's airflow when you get it and not rely on what they think is best..I doubt they will have tested one for 10 days running straight and rather they ship it as soon as it hashes a share Tongue

crumbs

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Quote from: Gyrsur on October 21, 2013, 01:52:35 PM

...
no I mean is it possible to move the fans lower easy. put pressure on top of the fans or how did he do it?

EDIT: he has to fix the fans somehow or not? Huh

don't try at home kids! Cheesy

Sorry, misunderstood you. Can't read Embarrassed

Gyrsur

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Quote from: crumbs on October 21, 2013, 01:31:06 PM

Quote from: Gyrsur on October 21, 2013, 01:26:25 PM

Quote from: DPoS on October 21, 2013, 10:47:24 AM

Quote from: Puppet on October 21, 2013, 04:48:31 AM

Quote from: itod on October 21, 2013, 04:29:56 AM

I haven't heard other BTC rig manufacturers did.

https://www.kncminer.com/images/rnd/Slide8.png

which is why I lowered the fans to get 5-7C cooler Cheesy

http://i.imgur.com/VaXldf5.jpg

how did you do that? serious question.

To divert some of the air over the VRMs? Possibly confused by the the thermal pic?

no I mean is it possible to move the fans lower easy. put pressure on top of the fans or how did he do it?

EDIT: he has to fix the fans somehow or not? Huh

don't try at home kids! Cheesy

Speakeron

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Quote from: Puppet on October 21, 2013, 12:41:39 PM

And somewhere hidden inbetween those is a sierra that needs a power cycle (using 2 PSU switches no less).

I think that looks pretty neat. Each CMA is sitting right behind its PE1950 and just takes 1U (although the power sockets on the left are a bit tight). A Sierra would just be a 4U hole in that. I'd surprised if that mix actually occurred in the real world though!

I think though, if you've got the miner in a DC and it need a hardware power cycle you've got more problems than just reaching into the back of the rack (you've actually got to go to the DC or pay some dude to do it! And it raises concerns over the equipment's reliability). And anyway, DC costs are going to bite into the miserable ROI. Who would even think of doing that unless they had some free space?

jjiimm_64

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/*repeats to meself: I will not feed the trolls, I will not feed the trolls..

crumbs

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Quote from: Gyrsur on October 21, 2013, 01:26:25 PM

Quote from: DPoS on October 21, 2013, 10:47:24 AM

Quote from: Puppet on October 21, 2013, 04:48:31 AM

Quote from: itod on October 21, 2013, 04:29:56 AM

I haven't heard other BTC rig manufacturers did.

https://www.kncminer.com/images/rnd/Slide8.png

which is why I lowered the fans to get 5-7C cooler Cheesy

http://i.imgur.com/VaXldf5.jpg

how did you do that? serious question.

To divert some of the air over the VRMs? Possibly confused by the the thermal pic?

Gyrsur

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Quote from: DPoS on October 21, 2013, 10:47:24 AM

Quote from: Puppet on October 21, 2013, 04:48:31 AM

Quote from: itod on October 21, 2013, 04:29:56 AM

I haven't heard other BTC rig manufacturers did.

https://www.kncminer.com/images/rnd/Slide8.png

which is why I lowered the fans to get 5-7C cooler Cheesy

http://i.imgur.com/VaXldf5.jpg

how did you do that? serious question.

crumbs

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Quote from: jjiimm_64 on October 21, 2013, 12:34:10 PM

...
First of all, I was incorrect... it is not 1400, but 1300 which is why they want enough PSU to handle minimum of 1560W

Second. you can mix and match pci power cables anyway you want.. it is just a direct power feed from the PSU. dont know what you mean by loafing

Third. Now I remember why i had you on ignore... welcome back to the iggy button.

I have dug up the relevent post about this... it was a little difficult given all the bullshit posts by trolls.

First of all, you were incorrect.... It's not 1400, and also not 1300. It is, as i have suggested, 780, as could be easily calculated from the product description here. Each chip is 400 GH/s, there are 3 chips for 1200 GH/s total. At advertised .65W/GH, that totals to 780W. Any other number you arrive at directly contradicts the company claims.

Second. you can mix and match PCI power cables anyway you want.. AS LONG AS THEY ARE FROM THE SAME POWER SUPPLY. You would have to plug two different PS into the same board to evenly split the power from 2 PS between three boards. You don't know what i mean because you're stupid.

Third. Now you understand why you will continue to fail at life, iggy button or no.

You have dug up an irrelevant post here... It was a little difficult because your last remaining neurons are fused together by a syphilis germ.

I'm a kind & patient guy, i've generously given of myself to educate you, please don't make me regret it. Angry

Edit: Ask your mom to buy some outlet childproofing blockoffs, and install them throughout your house. She'll understand why.

jjiimm_64

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Quote from: Syke on October 21, 2013, 12:41:19 PM

Quote from: jjiimm_64 on October 21, 2013, 12:34:10 PM

Second. you can mix and match pci power cables anyway you want.. it is just a direct power feed from the PSU. dont know what you mean by loafing

You don't want to mix-n-match cables. If you have 2 power supplies feeding to a single board and one power supply dies, the board will try to pull double the load from the other power supply. Bad things happen.

Syke. I didn't say bad things couldn't happen.. I was trying to enlighten the dude that said running PSUs in parallel might work and then said something about fireworks and loafing...

From a long time gpu miner with many, many Seasonics. I have powered gpus on seperate rigs with one psu. I have powered a gpu from a 220 psu to a rig powered by 110. I have powered one gpu from 2 PSUs... my point was the PCI cable is just an extension cord for DC voltage.

Puppet

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Quote from: Speakeron on October 21, 2013, 12:12:17 PM

My racks are very neat and tidy at the back.

Even if its tidy. For instance if you have a bunch of these in your rack:

And somewhere hidden inbetween those is a sierra that needs a power cycle (using 2 PSU switches no less).

Syke

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Quote from: jjiimm_64 on October 21, 2013, 12:34:10 PM

Second. you can mix and match pci power cables anyway you want.. it is just a direct power feed from the PSU. dont know what you mean by loafing

You don't want to mix-n-match cables. If you have 2 power supplies feeding to a single board and one power supply dies, the board will try to pull double the load from the other power supply. Bad things happen.

jjiimm_64

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Topic: HashFast announces specs for new ASIC: 400GH/s - page 507. (Read 880461 times)