ANTMINER S2 Discussion and Support Thread - page 187.

ak49er

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Quote from: thomas_s on April 03, 2014, 08:42:48 PM

Quote from: 1l1l11ll1l on April 03, 2014, 08:08:48 PM

Aaaaaaaaand here you go.

The Power supply keeps cutting out in 1 machine, I didn't have a spare PSU, so I removed 2 of the asic blades to bring down the power draw, we'll see if it stays alive tonight.

Open the S2 and replace the PSU jumper, by the way minersource.net sells jumpers

http://minersource.net/products/psu-jump-starter

I wouldn't have thought that it needs a jumper. If I were building the thing I'd have that plug doing something useful like say powering things using 5V or 3.3V. You know, like what it's intended for.

thomas_s

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Quote from: cxboyminer on April 03, 2014, 08:48:26 PM

Quote from: thomas_s on April 03, 2014, 08:42:48 PM

Quote from: 1l1l11ll1l on April 03, 2014, 08:08:48 PM

Aaaaaaaaand here you go.

The Power supply keeps cutting out in 1 machine, I didn't have a spare PSU, so I removed 2 of the asic blades to bring down the power draw, we'll see if it stays alive tonight.

Open the S2 and replace the PSU jumper, by the way minersource.net sells jumpers

http://minersource.net/products/psu-jump-starter

You can use a paperclip for that purpose too.

You could, the one that was in the unit from Bitmain was using the paperclip trick...except it was bad when it was replaced with the actual jumper the machine powered on without dropping out or failing to turn on.

It really doesn't matter where you get it from, but I'd suggest replacing the one that came in it.

klondike_bar

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Quote from: MrTeal on April 03, 2014, 07:56:42 PM

Quote from: klondike_bar on April 03, 2014, 07:31:46 PM

Quote from: MrTeal on April 03, 2014, 06:35:51 PM

I think overclocking is going to be extremely limited, with four TPS53355 per board, or one for 16 chips. On the S1, it's one for 8 chips.

Thats the detail I've been waiting for

*really hoping for a PCB photo still*

The S1 could consume around 45W per group of 8 chips overclocked (overclocking pushed the regulator right to its limits, but the real limiting factor was the voltage being set to 1.1V - some people have apparently pencil-modded the S1 to almost 215GH/~470W, or about 60w/8 chips)
45W/1.1V=40.9A on a 30A-rated component. (bitfury h-boards faced very similar amperage limits when overvolted around 0.95V)

Its likely these chips run at around 0.8V and 1000W/640chips is about 25W per cluster of 16. That leaves a LOT of headroom on the regulators, but some of this is lost to the difference in voltage (more amperage). 25W/0.8V= 31.25A stock.

Presumably these should be able to overclock without any issues from the regulator. I imagine all other components are beefy enough also. I imagine you will hit hardware errors at 15-20% overclock as with the S1. These may even be capable of up to 1.5TH is voltage was increased to ~0.9V

0.75V unloaded, so a little higher than that on the current. Still some room and I'd expect people should be able to get 20-40% overclocks, but not the 100+% ones we might have been able to do with 8 chips per vrm.

thanks for the actual value

Still leaves a lot of hardware overhead, espescially looking at the PCB. improved cooling an an extra 600W PSU could allow some nice overclocking results. (how are the PCIe plugs wired - is it seperate 12V for each board or are they all sharing a common voltage?

cxboyminer

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Quote from: thomas_s on April 03, 2014, 08:42:48 PM

Quote from: 1l1l11ll1l on April 03, 2014, 08:08:48 PM

Aaaaaaaaand here you go.

The Power supply keeps cutting out in 1 machine, I didn't have a spare PSU, so I removed 2 of the asic blades to bring down the power draw, we'll see if it stays alive tonight.

Open the S2 and replace the PSU jumper, by the way minersource.net sells jumpers

http://minersource.net/products/psu-jump-starter

You can use a paperclip for that purpose too.

jamesg

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AKA: gigavps

Quote from: Biodom on April 03, 2014, 08:14:23 PM

I wonder, why no more batches for both S1 and S2?

Crazy manic miners bought them all... Wink

thomas_s

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Quote from: 1l1l11ll1l on April 03, 2014, 08:08:48 PM

Aaaaaaaaand here you go.

The Power supply keeps cutting out in 1 machine, I didn't have a spare PSU, so I removed 2 of the asic blades to bring down the power draw, we'll see if it stays alive tonight.

Open the S2 and replace the PSU jumper, by the way minersource.net sells jumpers

http://minersource.net/products/psu-jump-starter

jjiimm_64

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Quote from: Biodom on April 03, 2014, 08:14:23 PM

Wouldn't you be limited by the internal 1000W PSU? Replacing internal PSU with 1250w or 1350W might work for over-clock, but at $300-350 expense and loss of warranty, i suppose.

I wonder, why no more batches for both S1 and S2?

CRAP i wanted to by a shitload of S1's if the price came down just a little.

cxboyminer

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Just saying to all the batch 2 customers...

SE Asia is having some weird weather, such as hailing and heavy thunderstorm for the last couple of days continuously. Your orders could be delayed.

Biodom

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Wouldn't you be limited by the internal 1000W PSU? Replacing internal PSU with 1250w or 1350W might work for over-clock, but at $300-350 expense and loss of warranty, i suppose.

I wonder, why no more batches for both S1 and S2?

1l1l11ll1l

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Aaaaaaaaand here you go.

The Power supply keeps cutting out in 1 machine, I didn't have a spare PSU, so I removed 2 of the asic blades to bring down the power draw, we'll see if it stays alive tonight.

MrTeal

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Quote from: klondike_bar on April 03, 2014, 07:31:46 PM

Quote from: MrTeal on April 03, 2014, 06:35:51 PM

I think overclocking is going to be extremely limited, with four TPS53355 per board, or one for 16 chips. On the S1, it's one for 8 chips.

Thats the detail I've been waiting for

*really hoping for a PCB photo still*

The S1 could consume around 45W per group of 8 chips overclocked (overclocking pushed the regulator right to its limits, but the real limiting factor was the voltage being set to 1.1V - some people have apparently pencil-modded the S1 to almost 215GH/~470W, or about 60w/8 chips)
45W/1.1V=40.9A on a 30A-rated component. (bitfury h-boards faced very similar amperage limits when overvolted around 0.95V)

Its likely these chips run at around 0.8V and 1000W/640chips is about 25W per cluster of 16. That leaves a LOT of headroom on the regulators, but some of this is lost to the difference in voltage (more amperage). 25W/0.8V= 31.25A stock.

Presumably these should be able to overclock without any issues from the regulator. I imagine all other components are beefy enough also. I imagine you will hit hardware errors at 15-20% overclock as with the S1. These may even be capable of up to 1.5TH is voltage was increased to ~0.9V

0.75V unloaded, so a little higher than that on the current. Still some room and I'd expect people should be able to get 20-40% overclocks, but not the 100+% ones we might have been able to do with 8 chips per vrm.

cxboyminer

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They...look...awesome!!!

ak49er

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Quote from: ipxtreme on April 03, 2014, 11:17:52 AM

Dumb UPS. Last night routed my package from Alaska to Kentucky and I am in California. Delayed 1 extra day. Was ready to un-box today.

I live in Alaska and they arrive in Anchorage from China in the afternoon, then get sent to California, and back to Anchorage overnight, to be delivered to me the next day. I just received notification that there's been a flight delay and my latest S1 is in Anchorage and will be delayed. And I'm thinking why not just send it down here then and have it arrive tomorrow as expected, can't you read the address?

MrTeal

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Quote from: abracadabra on April 03, 2014, 07:28:19 PM

Quote from: MrTeal on April 03, 2014, 06:57:50 PM

Well, mine won't connect at 192.168.1.99, and according to an IP scan there's nothing from 1.1 to 2.254
My laptop detects the board and the lights on the BBB work, so it doesn't appear to be a hardware error.
Did anyone else get a unit with a different IP?

"My laptop detects the board"

What do you mean by that?

Check all internal connections. I had loose boards, the cable to the display was disconnected, and the internal ethernet cable was not completely seated to the panel jack.

I mean that instead of getting a cable unplugged message like you do when the unit is on, it shows it's connected to an unknown network.
Strangely, sometimes if I power cycle the unit it will connect, and sometimes no lights on the BBB's MagJack come on and nothing is detected.

Syke

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Quote from: jjiimm_64 on April 03, 2014, 07:29:59 PM

what the heck is the password.. root root will not let me in

Try:

Quote from: abracadabra on April 03, 2014, 04:54:24 PM

ssh login is root/admin

klondike_bar

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ASIC Wannabe

Quote from: jjiimm_64 on April 03, 2014, 07:29:59 PM

what the heck is the password.. root root will not let me in

Its an RPi in there correct? Should be

u: pi p: raspberry

klondike_bar

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Quote from: MrTeal on April 03, 2014, 06:35:51 PM

I think overclocking is going to be extremely limited, with four TPS53355 per board, or one for 16 chips. On the S1, it's one for 8 chips.

Thats the detail I've been waiting for

*really hoping for a PCB photo still*

The S1 could consume around 45W per group of 8 chips overclocked (overclocking pushed the regulator right to its limits, but the real limiting factor was the voltage being set to 1.1V - some people have apparently pencil-modded the S1 to almost 215GH/~470W, or about 60w/8 chips)
45W/1.1V=40.9A on a 30A-rated component. (bitfury h-boards faced very similar amperage limits when overvolted around 0.95V)

Its likely these chips run at around 0.8V and 1000W/640chips is about 25W per cluster of 16. That leaves a LOT of headroom on the regulators, but some of this is lost to the difference in voltage (more amperage). 25W/0.8V= 31.25A stock.

Presumably these should be able to overclock without any issues from the regulator. I imagine all other components are beefy enough also. I imagine you will hit hardware errors at 15-20% overclock as with the S1. These may even be capable of up to 1.5TH is voltage was increased to ~0.9V

jjiimm_64

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what the heck is the password.. root root will not let me in

abracadabra

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Quote from: MrTeal on April 03, 2014, 06:57:50 PM

Well, mine won't connect at 192.168.1.99, and according to an IP scan there's nothing from 1.1 to 2.254
My laptop detects the board and the lights on the BBB work, so it doesn't appear to be a hardware error.
Did anyone else get a unit with a different IP?

"My laptop detects the board"

What do you mean by that?

Check all internal connections. I had loose boards, the cable to the display was disconnected, and the internal ethernet cable was not completely seated to the panel jack.

kano

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Linux since 1997 RedHat 4

Quote from: MrTeal on April 03, 2014, 06:57:50 PM

Well, mine won't connect at 192.168.1.99, and according to an IP scan there's nothing from 1.1 to 2.254
My laptop detects the board and the lights on the BBB work, so it doesn't appear to be a hardware error.
Did anyone else get a unit with a different IP?

If you have a linux device on the network when it boots:
sudo tcpdump -n -nn -l -i any arp

Topic: ANTMINER S2 Discussion and Support Thread - page 187. (Read 355730 times)