ANTMINER S4 Discussion and Support Thread - page 91.

dmwardjr

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Quote from: Cyper_BLC on November 21, 2014, 12:00:09 AM

Others perfecly normal only J7 connected hash board is unconfigurable, if you want to proof of that disconnect this board power cord and you will see chain 1 is gone and look at your power wattage. or try to configure voltage and repower again. i have 2 S4 and all of them have same problem.
and i found best configuration and best efficiency = 187.5 Mhz at 0.685 Volt (you can add this value like that = 0685)
this is the best...

Wow!

So, you recommend all of us with batch 2 to switch to 187.5 Mhz at 0.685 Volt?

Will doing this lower my hash rate?

If so, by how much will it lower the hash rate?

Cyper_BLC

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Activity: 490

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Reverse Engineer

Others perfecly normal only J7 connected hash board is unconfigurable, if you want to proof of that disconnect this board power cord and you will see chain 1 is gone and look at your power wattage. or try to configure voltage and repower again. i have 2 S4 and all of them have same problem.
and i found best configuration and best efficiency (0.52 but not stable) => 187.5 Mhz at 0.685 Volt (you can add this value like that = 0685)
this is the best...

dmwardjr

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Technical Analyst/Trader

Quote from: Cyper_BLC on November 20, 2014, 09:43:26 PM

Quote from: Cyper_BLC on November 17, 2014, 08:20:29 PM

Hi everyone,
i have got a strange problem with my Antminer S4 batch2, i listed founded problems:
1-my S4's has different connections with FPGA controller, one of them is top left hash board connected to J7, other s4 same board is connected to J6. this is very strange or poor assembly.
2-this J7 connector is going to the first hash board i think, but other hash boards red led is off except this J7 connected board led blink. 5 minutes waiting then this board getting hot and another five minutes all boards leds are on. then all of them is hot but THERE IS NO ETHERNET CONNECTION. Huh

3-i worried power comp. and i changed 0720 to 0700 then i measured all hash boards voltages on 1500uF/2,5V capacitor.. wouuwww THERE WAS A PROBLEM! because we can never change 1 hash board's (j7 connected) voltage. this is allways 0750V. than i read confidential pdf of CSD95372B and TPS53641 this is i2c controlled buck converter and this is controlled by pic12f1822 on every hash board. So this 0,750 Volt i measured is over voltage protection limit.
i am an electronic engineer by the way.

I ASK TO BITMAINTECH,
WHY OUR HASH BOARDS HASHING SOMETHING STANDALONE (or why warming up) AND WHY 3 HASH BOARDS VOLTAGE CONFIGURABLE BUT 1 IS NOT ?

thanks, any ideas ?

Dogie said to me "paste pictures to forum" then i did.
Now any ideas for this? Sad

when i did sniff controller->buck i2c communication, i will make a seperate or online live voltage changer ):
software bugs are minor but we have got a major hardware bugs.

Any symptoms prior to this other than ethernet going out? Such as 1 or 2 boards much warmer Celsius than the others, etc...?

Cyper_BLC

sr. member

Activity: 490

Merit: 270

Reverse Engineer

Quote from: Cyper_BLC on November 17, 2014, 08:20:29 PM

Hi everyone,
i have got a strange problem with my Antminer S4 batch2, i listed founded problems:
1-my S4's has different connections with FPGA controller, one of them is top left hash board connected to J7, other s4 same board is connected to J6. this is very strange or poor assembly.
2-this J7 connector is going to the first hash board i think, but other hash boards red led is off except this J7 connected board led blink. 5 minutes waiting then this board getting hot and another five minutes all boards leds are on. then all of them is hot but THERE IS NO ETHERNET CONNECTION. Huh

3-i worried power comp. and i changed 0720 to 0700 then i measured all hash boards voltages on 1500uF/2,5V capacitor.. wouuwww THERE WAS A PROBLEM! because we can never change 1 hash board's (j7 connected) voltage. this is allways 0750V. than i read confidential pdf of CSD95372B and TPS53641 this is i2c controlled buck converter and this is controlled by pic12f1822 on every hash board. So this 0,750 Volt i measured is over voltage protection limit.
i am an electronic engineer by the way.

I ASK TO BITMAINTECH,
WHY OUR HASH BOARDS HASHING SOMETHING STANDALONE (or why warming up) AND WHY 3 HASH BOARDS VOLTAGE CONFIGURABLE BUT 1 IS NOT ?

thanks, any ideas ?

Dogie said to me "paste pictures to forum" then i did.
Now any ideas for this? Sad

when i did sniff controller->buck i2c communication, i will make a seperate or online live voltage changer ):
software bugs are minor but we have got a major hardware bugs.

notlist3d

legendary

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Thanks for coupon the first one after is now up and running

And shipping in 2 days!

pikachuy

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Quote from: solitude on November 20, 2014, 02:42:42 PM

Please post all of these coupons and others similar in the Marketplace. That is what it's for.

I don't like having a post alert and come and check to see it was only coupon offerings/for sale...

Cassey

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Better to have 100 friends than 100 rubles

Quote from: pak13 on November 20, 2014, 02:00:09 PM

Quote from: Cassey on November 20, 2014, 01:48:33 PM

How so on the SP20? Lower output, similar power requirements....

Power is always the primary concern for cost over time.

Real world numbers ... 15% more power = 15% less profit or 15% longer to get a positive ROI assuming initial costs are equal.
1200w for 1.7TH 0.7
+0.8 for S3 S4

Ask the question, why it's difficult to get hold of a spondoolies but easy to buy a bitmaintech. Why are we still stuck on batch 11 for the s3's. Why are they giving such great deals at the moment. End of life products. (within the month most likely)

1200W for 1.7Th = 706 W/TH for SP20
1400W (worst case) for 2.0Th - 700W/TH for SP4

Where are you getting 15% difference?

pak13

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Quote from: Cassey on November 20, 2014, 01:48:33 PM

How so on the SP20? Lower output, similar power requirements....

Power is always the primary concern for cost over time.

Real world numbers ... 15% more power = 15% less profit or 15% longer to get a positive ROI assuming initial costs are equal.
1200w for 1.7TH 0.7
+0.8 for S3 S4

Ask the question, why it's difficult to get hold of a spondoolies but easy to buy a bitmaintech. Why are we still stuck on batch 11 for the s3's. Why are they giving such great deals at the moment. End of life products. (within the month most likely)

Cassey

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Better to have 100 friends than 100 rubles

How so on the SP20? Lower output, similar power requirements....

pak13

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Quote from: nexus99 on November 20, 2014, 01:27:32 PM

The 400 coupon seems to make these one of the better buys. Competitive with the SP20.

SP20 far cheaper long term. And from what we've seen, more reliable.

The new low power chips are less than a month away. This is the same fire sale as with the S2's before the newer models come out.

pak13

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Quote from: dogie on November 20, 2014, 11:28:17 AM

Quote from: Prelude on November 20, 2014, 01:49:07 AM

Quote from: TracerX on November 19, 2014, 12:29:02 PM

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

They have rack mount ears--they are designed to be mounted in a DC horizontally.

What I meant was stacking them directly on top of each other, without a cabinet supporting the weight of each unit.

They're not that heavy, although I wouldn't go more than 4 in a stack. You could probably go more but I wouldn't.

If you do follow this ~~dogie~~ employee's blah blah advice, remember to strap them as one. They will vibrate or worst case, if you live in an earth quake region, they could potentially fall, kill or create a fire.

nexus99

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The 400 coupon seems to make these one of the better buys. Competitive with the SP20.

dogie

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dogiecoin.com

Quote from: Prelude on November 20, 2014, 01:49:07 AM

Quote from: TracerX on November 19, 2014, 12:29:02 PM

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

They have rack mount ears--they are designed to be mounted in a DC horizontally.

What I meant was stacking them directly on top of each other, without a cabinet supporting the weight of each unit.

They're not that heavy, although I wouldn't go more than 4 in a stack. You could probably go more but I wouldn't.

TracerX

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Quote from: Cassey on November 20, 2014, 09:48:17 AM

Quote from: Prelude on November 20, 2014, 01:49:07 AM

Quote from: TracerX on November 19, 2014, 12:29:02 PM

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

They have rack mount ears--they are designed to be mounted in a DC horizontally.

What I meant was stacking them directly on top of each other, without a cabinet supporting the weight of each unit.

Although not the strongest case I've ever seen, I'd be comfortable doing 4 deep so long as the bottom one was well supported. e.g Sitting on a solid shelf, not front finger mounted support by 6 small screws. I wouldn't go more than 2 deep if the bottom one was only finger mounted.

Also note they vibrate a bit - so use the rubber feet on the bottom one.

Yeah, my bad--I should have been more clear. They are designed to be ran horizontally, but you should use shelving to support every two or so. The ears aren't designed to support the weight of the unit, just to keep them in place in the rack.

Cheers.

Cassey

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Better to have 100 friends than 100 rubles

Quote from: Prelude on November 20, 2014, 01:49:07 AM

Quote from: TracerX on November 19, 2014, 12:29:02 PM

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

They have rack mount ears--they are designed to be mounted in a DC horizontally.

What I meant was stacking them directly on top of each other, without a cabinet supporting the weight of each unit.

Although not the strongest case I've ever seen, I'd be comfortable doing 4 deep so long as the bottom one was well supported. e.g Sitting on a solid shelf, not front finger mounted support by 6 small screws. I wouldn't go more than 2 deep if the bottom one was only finger mounted.

Also note they vibrate a bit - so use the rubber feet on the bottom one.

Prelude

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Quote from: TracerX on November 19, 2014, 12:29:02 PM

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

They have rack mount ears--they are designed to be mounted in a DC horizontally.

What I meant was stacking them directly on top of each other, without a cabinet supporting the weight of each unit.

sEpuLchEr

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Activity: 248

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Are we there yet?

Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

Looking at the way the boards are placed, might be a better idea to stack them then vertical.

dlowings

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Quote from: Prelude on November 19, 2014, 11:42:25 AM

I'm assuming there is no issue with stacking S4s? Or would running them vertical (PSU intake side up) be preferable?

I stack mine in a rack with no issue .

Cassey

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Activity: 470

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Better to have 100 friends than 100 rubles

So back on topic... moved my box, freaked out when only one blade came fully online with a few chips on each of the other showing up. Powered down, open the case, and didn't see anything amiss. Closed it back up, powered it back up, and everything magically appeared!

Had it running back at 200MH stock speed, at 0.72 volts, overnight and noticed just a couple of HW blips, so just nudged it up to 0.725 to see if that makes it 100% clean.

Oh, also discovered the reason the alarm was randomly going off, hashing going to zero, and then recovering... the multicoinpool I used switched coins! Disabled the alarm for the nth time.

Vaguely related: http://www.multicoinpool.org now has a 2048 min. diff port (3321) setup for SHA256 miners like the S3 and S4. We have noticed the S4 jumping up to 4096 occasionally, but the 2048 min. seems to have addressed the poor performance after a coin switch. FWIW: that was done per my request - great sysop there!

Cassey

update: After 90 minutes of runtime, my S4 is running at an 8192 diff on multicoinpool.

suchmoon

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https://bpip.org

Quote from: ?? on ??

Hi, guys.
I have three S4 coupons of $400 each.
I sell them for $200 worth of bitcoins each if you are interested (makes you save $200 by S4).
Validity time is until :
2014-11-30 22:18:00

A page or so back people were offering these coupons for a few dollars until some got tired of reading them and offered them for a single sat.

And then we all got kicked to the digital goods forum where it belongs:

https://bitcointalksearch.org/topic/s4-coupons-was-re-antminer-s4-discussion-and-support-thread-864352

$200 LOL

Topic: ANTMINER S4 Discussion and Support Thread - page 91. (Read 301481 times)