HashFast announces specs for new ASIC: 400GH/s - page 372.

Visesrion

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GIF by SOCIFI

Quote from: cedivad on December 16, 2013, 01:35:50 PM

Yes, probably.
Another point in my favour for my lawyer... But i recall another user complaining of the lack of answers a few days ago, this is why i asked here...

Yeah, I was that user I suppose. I haven't received any answer back from HF tickets ( 10 days ago or so) from John's email or even John 's skype, even he is online all time and reading my messages. And I was just requesting an invoice and to change the shipping adress as they told me months ago that could be done without problem

Again, as usual HF do not care about nothing more that the money they got in their pocket

mgio

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Why no tweets in 4 days?? This doesn't look good. I don't see how they can possibly make the deadline. They don't even seem to be working weekends!

DPoS

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Quote from: defcon23 on December 16, 2013, 03:16:24 PM

Quote from: cedivad on December 16, 2013, 12:46:35 PM

Anyone got any luck having a reply from them lately?

I'm asking legitimate questions, such as
"the invoice you sent me includes a control unit (sierra), will you send it for real or do i have to buy it myself?"
"will you send USB cables and hubs along with the control unit?"

Makes me wonder...

(and btw, their telephone number doesn't work anymore).

yup... BFL STYLE .... Shocked

at least if btc crashes fast enough they will lose most of what they stole.... hell they are probably the ones crashing the price and not china

defcon23

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Quote from: cedivad on December 16, 2013, 12:46:35 PM

Anyone got any luck having a reply from them lately?

I'm asking legitimate questions, such as
"the invoice you sent me includes a control unit (sierra), will you send it for real or do i have to buy it myself?"
"will you send USB cables and hubs along with the control unit?"

Makes me wonder...

(and btw, their telephone number doesn't work anymore).

yup... BFL STYLE .... Shocked

cedivad

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Yes, probably.
Another point in my favour for my lawyer... But i recall another user complaining of the lack of answers a few days ago, this is why i asked here...

RoadStress

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Quote from: cedivad on December 16, 2013, 12:46:35 PM

Anyone got any luck having a reply from them lately?

I'm asking legitimate questions, such as
"the invoice you sent me includes a control unit (sierra), will you send it for real or do i have to buy it myself?"
"will you send USB cables and hubs along with the control unit?"

Makes me wonder...

(and btw, their telephone number doesn't work anymore).

Maybe you got banned BFL style!

cedivad

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Anyone got any luck having a reply from them lately?

I'm asking legitimate questions, such as
"the invoice you sent me includes a control unit (sierra), will you send it for real or do i have to buy it myself?"
"will you send USB cables and hubs along with the control unit?"

Makes me wonder...

(and btw, their telephone number doesn't work anymore).

CYPER

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Quote from: cedivad on December 16, 2013, 08:54:26 AM

Quote from: CYPER on December 16, 2013, 08:25:30 AM

I highly doubt that you can run 550W through the PCI-E cable without any consequences.

Correct me if i'm wrong, i'm not really following this wire debate, but there are 2 PCI-E slots on each board, so each PCI-E cable should be able to provide around 300W.
I don't see a problem with that.

The discussion was about the general characteristics of 18AWG wire and not specifically for the Hashfast board.
Still 300W per one PCI-E cable with 3x 12V lines is pushing it to the limit according to my experience - the cable gets quite hot.
For example KNC specifically says that: You need to have 1 PCI-E cable for each asic card.

Quote from: tacotime on December 16, 2013, 08:57:34 AM

2x 6-pin PCIe cables are used to power my Bitfury M board. A few people have had their's go up in flames when using between 500-600w. The three 12V molex contacts on the 6-pin connector themselves are good for 300W or so all combined, so long as your PSU manufacturer doesn't cheap out on them and use a smaller gauge than spec (which seems to happen on occasion).

It shouldn't be a problem if we're all getting seasonic psus.

Most probably it would be OK for the long term with a good quality PSU, still I prefer to limit the current on a single 18AWG strand to 6A = 18A for a single cale.

tacotime

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2x 6-pin PCIe cables are used to power my Bitfury M board. A few people have had their's go up in flames when using between 500-600w. The three 12V molex contacts on the 6-pin connector themselves are good for 300W or so all combined, so long as your PSU manufacturer doesn't cheap out on them and use a smaller gauge than spec (which seems to happen on occasion).

It shouldn't be a problem if we're all getting seasonic psus.

cedivad

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Quote from: CYPER on December 16, 2013, 08:25:30 AM

I highly doubt that you can run 550W through the PCI-E cable without any consequences.

Correct me if i'm wrong, i'm not really following this wire debate, but there are 2 PCI-E slots on each board, so each PCI-E cable should be able to provide around 300W.
I don't see a problem with that.

CYPER

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Quote from: Jaymax on December 16, 2013, 07:39:35 AM

Quote from: CYPER on December 15, 2013, 06:49:40 PM

Now can you please provide data for the maximum 24/7 safe current per 18AWG wire.
My own research led me to believe it is much lower than 9A.

Useful table here

http://www.powerstream.com/Wire_Size.htm

using "The Maximum Amps for Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle."

AWG 18 is okay up to 16A (~<200W @ 12V)

I highly doubt that you can run 550W through the PCI-E cable without any consequences.
One of my PSUs (Cooler Master V850) is powering an October Jupiter and each module is being fed by a different PCI-E cable and still they get noticeably hot (around 44 degrees max).
Or try to connect 2 modules per PCI-E cable and it gets even hotter, yet the current per strand is only around 8-9A.

Jaymax

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Quote from: CYPER on December 15, 2013, 06:49:40 PM

Now can you please provide data for the maximum 24/7 safe current per 18AWG wire.
My own research led me to believe it is much lower than 9A.

Useful table here

http://www.powerstream.com/Wire_Size.htm

using "The Maximum Amps for Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle."

AWG 18 is okay up to 16A (~<200W @ 12V)

Hoofprint

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Quote from: Witness on December 16, 2013, 05:01:17 AM

Quote from: Hoofprint on December 16, 2013, 02:46:31 AM

Quote from: minternj on December 15, 2013, 05:27:34 PM

Well the way that hashfast_cl has been posting in here, you'd think they are pretty much done. But yes i also think they took the weekend off, probably because their pcb assembly house Sonic manufacturing doesnt work weekends. I think the Australia team is out surfing or hunting great whites too.

If its sunday in the states its monday in Aus

Quote from: jspielberg on December 15, 2013, 10:22:48 PM

So... Does anyone have experience with water based coolers like those that are being used?

Are they loud? Do you guys think they will be as loud as the avalon's?
I am currently very happy with my fanless bitfury setup.

Since it looks like ill void my warranty by running the unit in Australia.

Im going to rip out that Pos baby water cooling unit a putting in a bigger one. D5 vario pump, 60mm thick RX 240 series XSPC rad with corsair SP 120 fans

and how would you void your warranty in Australia? Different power from the socket?

Somewhere previous in the thread and hasfast's tos "operation in an ambient temperature other than 5-22 degrees Celsius (40-72 degrees Fahrenheit)" warranty is voided.
In my little corner of Aus today it was 34c (93.2F) topping out latter this week at 41c (105.8F) normal Aussie summer

240v standard house socket over here.

Witness

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Quote from: Hoofprint on December 16, 2013, 02:46:31 AM

Quote from: minternj on December 15, 2013, 05:27:34 PM

Well the way that hashfast_cl has been posting in here, you'd think they are pretty much done. But yes i also think they took the weekend off, probably because their pcb assembly house Sonic manufacturing doesnt work weekends. I think the Australia team is out surfing or hunting great whites too.

If its sunday in the states its monday in Aus

Quote from: jspielberg on December 15, 2013, 10:22:48 PM

So... Does anyone have experience with water based coolers like those that are being used?

Are they loud? Do you guys think they will be as loud as the avalon's?
I am currently very happy with my fanless bitfury setup.

Since it looks like ill void my warranty by running the unit in Australia.

Im going to rip out that Pos baby water cooling unit a putting in a bigger one. D5 vario pump, 60mm thick RX 240 series XSPC rad with corsair SP 120 fans

and how would you void your warranty in Australia? Different power from the socket?

Hoofprint

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Quote from: minternj on December 15, 2013, 05:27:34 PM

Well the way that hashfast_cl has been posting in here, you'd think they are pretty much done. But yes i also think they took the weekend off, probably because their pcb assembly house Sonic manufacturing doesnt work weekends. I think the Australia team is out surfing or hunting great whites too.

If its sunday in the states its monday in Aus

Quote from: jspielberg on December 15, 2013, 10:22:48 PM

So... Does anyone have experience with water based coolers like those that are being used?

Are they loud? Do you guys think they will be as loud as the avalon's?
I am currently very happy with my fanless bitfury setup.

Since it looks like ill void my warranty by running the unit in Australia.

Im going to rip out that Pos baby water cooling unit a putting in a bigger one. D5 vario pump, 60mm thick RX 240 series XSPC rad with corsair SP 120 fans

1l1l11ll1l

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Quote from: DeathAndTaxes on December 15, 2013, 07:10:25 PM

Quote from: CYPER on December 15, 2013, 06:49:40 PM

Now can you please provide data for the maximum 24/7 safe current per 18AWG wire.
My own research led me to believe it is much lower than 9A.

It depends on the length of the wire, and the acceptable voltage drop.

At 3 ft circuit legnth, 18 AWG is good for 9A with a 2.83% voltage drop. As for safe, at 2.83% voltage drop that would only 1.5W dissipated as heat. Still the point was somewhat academic I doubt HF will be pushing anywhere close to that much current but if they did the limiting factor wouldn't be the artificial PCIe graphics standard for 6 and 8 pin connectors.

KNC is what, 800W for 4 boards, or 200W per board, but they are using 20AWG wire, which adds up to 18" of 20AWG to the PSU cable length. Removing teh KNC wire and plugging the PSU cables right in added about .1V to the VRMs

minternj

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Quote from: aerobatic on December 15, 2013, 11:01:40 PM

Quote from: minternj on December 15, 2013, 10:57:54 PM

Quote from: 3DX4D on December 15, 2013, 10:47:04 PM

Quote from: aerobatic on December 15, 2013, 10:38:28 PM

that said, i suspect they're still quieter than avalons.

A god damn freight train is quieter than my neighbours B1 Avalon. LOL

if an avalon is a freight train, then BFL single must be a boeing 787

plasticky toilet door handles? batteries always up in flames? spends a lot of time in maintenance?

Was thinking more like production delays.

PuertoLibre

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Quote from: minternj on December 15, 2013, 10:57:54 PM

Quote from: 3DX4D on December 15, 2013, 10:47:04 PM

Quote from: aerobatic on December 15, 2013, 10:38:28 PM

that said, i suspect they're still quieter than avalons.

A god damn freight train is quieter than my neighbours B1 Avalon. LOL

if an avalon is a freight train, then BFL single must be a boeing 787

A gross exaggeration on the Avalon B1 unit noise.

You can very easily hold a quiet conversation next to one without issue as long as the temperature is below 85F.

The BFL units though (as many of you will testify) is a different beast. It runs pretty damn hot with it's case on. That is why almost everyone removes the housing and changes the fan as if it were "an unnecessary accessory".

While I can run my Avalon B1 (70~85GH/s) at below 50C with fan at 2k RPM. It doesn't really get hot or ramp up the Fans until the temp rises above 95F.

A BFL unit is a hit or miss (more often a miss IMO). Some are cool and work fine with the case on at 35C. Others (better than 50% IMO) are overheating and throttling on a constant basis. Necessitating the removal of the cover to get it under 80C.

The latest fun trend is for the chips (and their apparent cores) is to fail and then necessitating an RMA request. A costly trip back to BFL HQ for a good chuck in the trash bin. Assuming the custom BFL power supply doesn't spark and arc before killing the units attached to it.

aerobatic

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