Collecting Data on B8 S7 Failure Rates - page 3.

dmwardjr

legendary

Activity: 1302

Merit: 1318

Technical Analyst/Trader

Quote from: nhando on January 03, 2016, 02:48:10 PM

DOES SCREECHING FAN count as a failure? Also the lack of any response or care for my issue probably could be categorized as a failure regardless of what batch. Other than that my Batch 8 are running fine for a week. Still have another 1 to be power up tomorrow, hoping for the best.

Unfortunately, I don't think "screeching fan" will count. Maybe it will. It's hard to say what they would do...

dmwardjr

legendary

Activity: 1302

Merit: 1318

Technical Analyst/Trader

I have one batch 8 that hashed fine for a while then check on them one day after all my rigs failed over from number 1 pool to number 2 pool. It was hashing at approximately 3,000 GH/s on the number 2 pool. Eventually, number 1 pool came back up and was "Alive" again but still only 3,000 GH/s [Meaning, 2 boards hashing instead of 3]. I did not see any "x" or "-" for any blades. I rebooted several times and I simply "save and apply" several times with no success of 4,700 GH/s again. I disconnected that rig and hooked up another rig to take it's place. That rig is sitting to the side at the moment. I'm planning on getting back to checking that rig again later this evening or tomorrow to see if it still has the same issue. I'll keep you updated.

nhando

full member

Activity: 196

Merit: 100

DOES SCREECHING FAN count as a failure? Also the lack of any response or care for my issue probably could be categorized as a failure regardless of what batch. Other than that my Batch 8 are running fine for a week. Still have another 1 to be power up tomorrow, hoping for the best.

hawkfish007

hero member

Activity: 895

Merit: 504

I have 2 B8s with no issues, also never overclocked and running Dec 11 firmware. I am wondering if people are overclocking them to death.

notlist3d

legendary

Activity: 1456

Merit: 1000

I could be lucky but B8 I have still has no issues hashing. I have kinda took it easy on it, no OC or pushing. Don't know if it matters but using the Bitmain PSU (should not matter).

Only thing that was it seems they truly did mean +10 on efficiency when they put it. So it had a lower efficiency with lower chips, but guess that is not a failure.

yslyung

legendary

Activity: 1500

Merit: 1002

Mine Mine Mine

Quote from: Prelude on January 03, 2016, 01:19:25 PM

Thanks for posting that info, yslyung.

no worries mate. sharing is caring.

thx for starting the thread too.

Prelude

legendary

Activity: 1596

Merit: 1000

Thanks for posting that info, yslyung.

yslyung

legendary

Activity: 1500

Merit: 1002

Mine Mine Mine

it's called chain in antminer GUI

Chain #1 is far Right then middle is Chain #2 & lasltly Chain #3 is on the Left with miner facing towards you.

2x B8 arrived same day mined only for about 7-8 hours.

1 showed 0 temp with 30 ASIC chips & dashes ----------

2nd was working fine till low hashrate with lots of HW errors

disconnected both problematic board, documented the details with pics & mailed BMT waiting for approval to remove them then more pics to be sent & wait for reply then send it back to BMT.

I think entire process will take a minimum of 2 weeks for boards to return even i'm located in asia.

PSU are dps 2000 bb's, i even swapped them. no good. same issue.

in a couple of hours (GMT +8) china will wake & end of holidays for BMT.

let's see what kind of reply i get.

on another note, 1 of my b5 had a problem too, board arrived to BMT & now more waiting.

marvykkio

hero member

Activity: 798

Merit: 1000

fuck I bought 3x s7 batch 8, and tomorrow should send
My god we hope that work well

Prelude

legendary

Activity: 1596

Merit: 1000

It seems B8 S7 is the worst to date, with many failures reported. We can expect B9 to be the same since bitmain indicated B8 was the final design, which leads me to believe that B9 = B8 with a later shipping date.

I personally have 1 dead B8 board, board #3 and it died within 2 weeks of powering it on. I think we'll find that most people with a failure will also be board #3.

Bitmain has, to date, been very slow to respond to my RMA request. I'm giving them the benefit of the doubt right now due to the holidays.

If you've had a failure in another batch, you can indicate that by voting for the last option. In that case, I kindly request that you don't cast a second vote to indicate which board # failed, but instead post those details manually in this thread. That will allow us to gather details specifically for B8 in the poll.

Topic: Collecting Data on B8 S7 Failure Rates - page 3. (Read 4377 times)