Official Thread: AMT - page 58. | Bitcointalksearch.org

regtable69

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Quote from: FrictionlessCoin on March 31, 2014, 08:36:19 PM

Quote from: ?? on ??

I am order #958, the only thing I got so far from AMT is a bad attitude. All the solutions are just a mix match of parts or missing parts. Power supplies and cases no where in sight. The miners don't hash at the advertised speed unless you put them in turbo mode. This is why I am trying to go the refund route. If you try to complain they will rip your head off.

I filed with FTC and they also asked if I was a veteran when I filed and I said yes. I am also going to contact my veterans group to let them know what this wonderful American mining company is doing to me and the other veterans here.

AMT definitely need to ramp up their customer service.

At this point, they're lack of responsiveness is going to lead to a lot of legal action.

are you referring to the "kit" option? iv also had no reply from 3 emails regarding this lol. really dunno what to think of all this now

regtable69

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Quote from: ?? on ??

I am order #958, the only thing I got so far from AMT is a bad attitude. All the solutions are just a mix match of parts or missing parts. Power supplies and cases no where in sight. The miners don't hash at the advertised speed unless you put them in turbo mode. This is why I am trying to go the refund route. If you try to complain they will rip your head off.

I filed with FTC and they also asked if I was a veteran when I filed and I said yes. I am also going to contact my veterans group to let them know what this great American mining company is doing to me and other veterans here.

not being nasty as you served your time well, ok you are a veteran but this is using the fact you are a vet which is the same as playing "is it coz i is black card." amt are not the only ones who disrespect veterans say health systems, governments , kids you name it. do you get free or preferential treatment from mc donalds?? doy you get preferential treatment when you fill up at exxon or shop at k mart. you are a normal person whos been through a lot i'm sure, but you being a veteran has nothing to do with this at all. sorry if it offends you but it offends me to see you write it. because from your statement you have more right to the miner than i do? no i think not we both earned our money we both paid the same and we both deserve a miner. do not use your veteran status as a leverage its just disrespectful in my eyes.

FrictionlessCoin

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Quote from: ?? on ??

I am order #958, the only thing I got so far from AMT is a bad attitude. All the solutions are just a mix match of parts or missing parts. Power supplies and cases no where in sight. The miners don't hash at the advertised speed unless you put them in turbo mode. This is why I am trying to go the refund route. If you try to complain they will rip your head off.

I filed with FTC and they also asked if I was a veteran when I filed and I said yes. I am also going to contact my veterans group to let them know what this wonderful American mining company is doing to me and the other veterans here.

AMT definitely need to ramp up their customer service.

At this point, they're lack of responsiveness is going to lead to a lot of legal action.

augustocroppo

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OK, did AMT provided any proof of delivery? Did anyone aside from the obvious shill received any order? Otherwise, you are all still being manipulated. What I read is just more promises and excuses to avoid deliver what every customers paid a high price for it.

augustocroppo

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Quote from: AMT_miners on March 31, 2014, 02:12:51 PM

Alyssa,

And Josh rarely types here.

I'll check you're mail and get back to you shortly.

You are certainly not Alyssa, but Josh or Jim pretending to be Alyssa. I quite doubt that an Alyssa would use so many technical terms in her posts and know certain details which just a Josh or a Jim should know from the onset of this topic.

sirminesalot

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Agreed. The higher wattage PSU's (1500+) are a ripoff and why would you want to push so much load over one supply?

Retarded design.

They should have taken a note from the ebayer who had pictures of a 4u rack case, with space for 2 PSU's.

NaranKPatel

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Likely a dual 800 supply will cheap than 1500

Quote from: sirminesalot on March 31, 2014, 06:52:52 PM

Quote from: NotFuzzyWarm on March 31, 2014, 06:32:17 PM

When trying different fans, first look at the cfm needed and just make sure ya at least match the total cfm of whatever they ship with. Or... maybe wedge some copper or aluminum tubing between the fins and plumb to a manifold for liquid-cooling... Wink

Heck, I'd be tempted to pull the sinks and mount a cold-plate instead. Hmm...

On PSU's gotta say check Amazon or ebay, case in point, http://www.amazon.com/s/ref=sr_nr_p_n_feature_keywords_6?rh=n%3A1161760%2Ck%3Ahp+server+power+supply%2Cp_n_feature_keywords_two_browse-bin%3A6906988011&keywords=hp+server+power+supply&ie=UTF8&qid=1396308246&rnid=6525659011

Only catch is that they usually have 1-2 heavy output buses in the form of big copper lugs. Folks sel lug to pcie cable breakouts or just make yer own from some sets of pcie extender cables.

The case is fucked because it can't natively support two power supplies in it.

That's why buying a desktop PC case for this design was retarded. So was hoping it'd all run off of one power supply, and be expandable, to boot.

The way I see it, it'd be better to have dual 750's or 1000watt PSU's - redundancy being the key here (not one power supply issue will take all boards offline).

Shop around for "dual power supply cable" - these will let you connect two powersupplies to one motherboard (or switch). They are fairly cheap.

It's likely that 2 x 750/900w supplies will be cheaper and more popular than one big 1500-1800 watt unit anyway, thus less of supply/demand issue. I assume you just need to chain power cables switches of both turn on together so that all boards on the back-plane are powered in the chain at the same time otherwise no joy...

I would like / prefer, 6 x board back plane with 2 power chained together option if it exists...? Some of 800-900w units are fairly small, I wonder if they can they fit in the rack case?!? Both inside, one out one in, both outside?

sirminesalot

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Good luck using server power supplies. They are expensive, and the cabling usually isn't very long.

They also have proprietary connections based on the brand you buy, so you have to do research.

On a side note: I think it's a fucking embarrassment that AMT is saying they are out of power supplies. If they ship any miner without case, PSU, whatever - then a refund should be made to cover the cost of those items.

NotFuzzyWarm

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better have some well matched supplies then. Even so, the one with higher v out will get most/all the load...
EDIT: Hmm on re-read ( & look), so the supplies outputs are not actually tied together, you are just switching 2 supplies on/off at once and each feeds it's own load? (not 1+n redundant)

RickJamesBTC

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No, they just double up the turn on pins in the second psu. I have them in my store.

NotFuzzyWarm

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Interesting, I assume these are for use with supplies that are made to support redundant/hot-swap with internal isolation diodes? No way they can be in the plugs, they'd melt.

sirminesalot

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Quote from: NotFuzzyWarm on March 31, 2014, 06:32:17 PM

When trying different fans, first look at the cfm needed and just make sure ya at least match the total cfm of whatever they ship with. Or... maybe wedge some copper or aluminum tubing between the fins and plumb to a manifold for liquid-cooling... Wink

Heck, I'd be tempted to pull the sinks and mount a cold-plate instead. Hmm...

On PSU's gotta say check Amazon or ebay, case in point, http://www.amazon.com/s/ref=sr_nr_p_n_feature_keywords_6?rh=n%3A1161760%2Ck%3Ahp+server+power+supply%2Cp_n_feature_keywords_two_browse-bin%3A6906988011&keywords=hp+server+power+supply&ie=UTF8&qid=1396308246&rnid=6525659011

Only catch is that they usually have 1-2 heavy output buses in the form of big copper lugs. Folks sel lug to pcie cable breakouts or just make yer own from some sets of pcie extender cables.

The case is fucked because it can't natively support two power supplies in it.

That's why buying a desktop PC case for this design was retarded. So was hoping it'd all run off of one power supply, and be expandable, to boot.

The way I see it, it'd be better to have dual 750's or 1000watt PSU's - redundancy being the key here (not one power supply issue will take all boards offline).

Shop around for "dual power supply cable" - these will let you connect two powersupplies to one motherboard (or switch). They are fairly cheap.

opieum2

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Quote from: regtable69 on March 31, 2014, 06:24:07 PM

Quote from: opieum2 on March 31, 2014, 06:15:29 PM

Quote from: NaranKPatel on March 31, 2014, 05:54:44 PM

Quote from: AMT_miners on March 30, 2014, 11:59:13 PM

[/url]

This is the new cage.

Nice a good splattering of fans and a little redundancy, I hope the board or PI can track working fans or dead ones...

Taking a second look at those fans it seems like they are smaller 80mm fans. A setup like that would be fairly loud would it not? Not that it matters for those putting into custom cases or datacenters but for those mining at home that will be a noisy mess. Would 2 larger 180mm fans work? 2 of them would seem to be more than enough to push air through. Just wondering what the design decision was that led to having that many smaller fans vs a couple of larger fans that could achieve similar CFM with a lower Db level.

possible you could face dead zones around the centre of the larger fans which would leave 2 cards prone to over heat. thats my theory

There are dead zones in this design as well. I guess it depends on the reasons for the design too. Its possible 180mm would just not fit int he case (which is easily the case) 140mm might have not been large enough. I was more curious as to why this many fans really vs less and larger fans with similar CFM. Not a deal breaker by any means but it is a curious choice.

NotFuzzyWarm

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Evil beware: We have waffles!

When trying different fans, first look at the cfm needed and just make sure ya at least match the total cfm of whatever they ship with. Also on center dead zones: only applies to close mounted fans. If placed >1.5 the thickness of the fan away from the heat sinks (and have the side gaps closed off) the back pressure from the heat sinks almost always results in near perfect air distribution everywhere. I do this all the time with power systems I design.

Or... maybe wedge some copper or aluminum tubing between the fins and plumb to a manifold for liquid-cooling... Wink

Heck, I'd be tempted to pull the sinks and mount a cold-plate instead. Hmm...

On PSU's gotta say check Amazon or ebay, case in point, http://www.amazon.com/s/ref=sr_nr_p_n_feature_keywords_6?rh=n%3A1161760%2Ck%3Ahp+server+power+supply%2Cp_n_feature_keywords_two_browse-bin%3A6906988011&keywords=hp+server+power+supply&ie=UTF8&qid=1396308246&rnid=6525659011

Only catch is that they usually have 1-2 heavy output buses in the form of big copper lugs. Folks sel lug to pcie cable breakouts or just make yer own from some sets of pcie extender cables.

regtable69

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Quote from: opieum2 on March 31, 2014, 06:15:29 PM

Quote from: NaranKPatel on March 31, 2014, 05:54:44 PM

Quote from: AMT_miners on March 30, 2014, 11:59:13 PM

[/url]

This is the new cage.

Nice a good splattering of fans and a little redundancy, I hope the board or PI can track working fans or dead ones...

Taking a second look at those fans it seems like they are smaller 80mm fans. A setup like that would be fairly loud would it not? Not that it matters for those putting into custom cases or datacenters but for those mining at home that will be a noisy mess. Would 2 larger 180mm fans work? 2 of them would seem to be more than enough to push air through. Just wondering what the design decision was that led to having that many smaller fans vs a couple of larger fans that could achieve similar CFM with a lower Db level.

possible you could face dead zones around the centre of the larger fans which would leave 2 cards prone to over heat. thats my theory

opieum2

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Quote from: NaranKPatel on March 31, 2014, 05:54:44 PM

Quote from: AMT_miners on March 30, 2014, 11:59:13 PM

[/url]

This is the new cage.

Nice a good splattering of fans and a little redundancy, I hope the board or PI can track working fans or dead ones...

Taking a second look at those fans it seems like they are smaller 80mm fans. A setup like that would be fairly loud would it not? Not that it matters for those putting into custom cases or datacenters but for those mining at home that will be a noisy mess. Would 2 larger 180mm fans work? 2 of them would seem to be more than enough to push air through. Just wondering what the design decision was that led to having that many smaller fans vs a couple of larger fans that could achieve similar CFM with a lower Db level.

NaranKPatel

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Quote from: AMT_miners on March 30, 2014, 11:59:13 PM

[/url]

This is the new cage.

Nice a good splattering of fans and a little redundancy, I hope the board or PI can track working fans or dead ones...

mellorbo

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sent email requesting kit order to [email protected]
i await your reply

NotFuzzyWarm

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Evil beware: We have waffles!

Mmmm, on the point of power specs: Ya all parties involved could have saved grief there simply by calling them preliminary specs subject to change with final products. Ain't hindsight wonderful?

NotFuzzyWarm

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Evil beware: We have waffles!

Quote from: NaranKPatel on March 31, 2014, 04:44:51 PM

He may have been responding to daisy chain architecture having some limitations, 1 chip's link goes or has a weak link, they all go ... that could be read as chip issue unfortunately by design, even though the thermal design and it's scale might be better than one big chip, the implementation, i.e. reference board design should have taken that into account and provided better routing paths for daisy chain for weak or failing chips, etc.

That of course is a limitation of the SPI setup when using daisy chain. http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus
It can be partly solved by using a segmented master-slave setup but of course adds complexity. With that you just lose a few blocks of chips vs the entire chain. Hmm, also might let one restart the block at different voltages/speeds to try and recover... Is that what AMT is doing with the next-gen boards using several micro-processors?

IMHO, what doesn't help is the chips physical stacking, (SPI interface is top layer, buffer memory layer-2 and cores on bottom layer) That leads to a whole lot of possible noise getting in and interfering with the data stream unless special measures are taken to minimize it and also preferably do some ECC. But hell, if it works it works.

Topic: Official Thread: AMT - page 58. (Read 678353 times)