Batch 1 S9 / Stock Clock / 100% Fan / 20C Ambient / 20hr runtime:
Topic: Pair of s-9s now running photos are up. - page 4. (Read 7738 times)
20c is cold are you in an ac'd it room/data center?
This thread excites me way more than it should...
Batch 1 S9 / Stock Clock / 100% Fan / 20C Ambient / 20hr runtime:
I have getting double digit hw errors, at stock [email protected], with 100% fan to keep the chip temp just below 100c.
I tested lower clocks and 525 mhz seems to have hit the sweet spot, at 11.3TH, 59-64c PCB temps, 88-94c chip temp.
The jet engine sound is also further reduced to bearable level - I have yet to apply the filter hack idea from Philip but I temporary use a pantyhose to filter dust.
I tested lower clocks and 525 mhz seems to have hit the sweet spot, at 11.3TH, 59-64c PCB temps, 88-94c chip temp.
The jet engine sound is also further reduced to bearable level - I have yet to apply the filter hack idea from Philip but I temporary use a pantyhose to filter dust.
afaik, chips max temp is 125 deg C then it starts to fail.
well thats for s7 chip though but i'd assume should be the same.
i think other components will fail before asic chip.
like i said, below 75C pcb temp should be pretty safe.
keep it cool
4.2 Recommended Operation Conditions
TOPT Operation Temperature 125 ℃ (MAX)
https://cnshop.bitmain.com/files/download/BM1385_Datasheet_v2.0.pdf
bm1384 & bm 1385 pretty close, same value.
i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.
so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.
just my 2 cents.
philip, some screenies pls.
well thats for s7 chip though but i'd assume should be the same.
i think other components will fail before asic chip.
like i said, below 75C pcb temp should be pretty safe.
keep it cool
4.2 Recommended Operation Conditions
TOPT Operation Temperature 125 ℃ (MAX)
https://cnshop.bitmain.com/files/download/BM1385_Datasheet_v2.0.pdf
bm1384 & bm 1385 pretty close, same value.
i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.
so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.
just my 2 cents.
philip, some screenies pls.
thanks ysl - i am a bit more assured now that 600-625mhz will be safe for now - this unit will transit to a DC so I just want to ensure that this can live in my warehouse for a few weeks.
buysolar just sent a pm that one unit needed to go to freq 600 as the temps on it had crept up to
75c and 105c.
now we got better numbers 65 95
these puppies need fans over 4000 rpm we are at 70% manual 4100 rpm.
still need to tweak a bit.
the ambient temps are 88f or say 32c so this unit may be a 600 freq in the summer then 650 freq once the fall comes.
I am not going to provide AC so ambient temps in the summer in NJ will be over 95f some of the time.
I can tell this location will be 4 units until the fall comes.
Still we will be pushing 50th at 5000 watts for June, July, August, Sept.
It is not so bad as we will build up credits for the fall winter with the power company.
afaik, chips max temp is 125 deg C then it starts to fail.
well thats for s7 chip though but i'd assume should be the same.
i think other components will fail before asic chip.
like i said, below 75C pcb temp should be pretty safe.
keep it cool
4.2 Recommended Operation Conditions
TOPT Operation Temperature 125 ℃ (MAX)
https://cnshop.bitmain.com/files/download/BM1385_Datasheet_v2.0.pdf
bm1384 & bm 1385 pretty close, same value.
i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.
so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.
just my 2 cents.
philip, some screenies pls.
well thats for s7 chip though but i'd assume should be the same.
i think other components will fail before asic chip.
like i said, below 75C pcb temp should be pretty safe.
keep it cool
4.2 Recommended Operation Conditions
TOPT Operation Temperature 125 ℃ (MAX)
https://cnshop.bitmain.com/files/download/BM1385_Datasheet_v2.0.pdf
bm1384 & bm 1385 pretty close, same value.
i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.
so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.
just my 2 cents.
philip, some screenies pls.
thanks ysl - i am a bit more assured now that 600-625mhz will be safe for now - this unit will transit to a DC so I just want to ensure that this can live in my warehouse for a few weeks.
I'll leave other to post pics. Got mine today and so far am - happy - with it but...
A. is so far averaging just over 13THs
B. A thermal design issue raises it head with these. The middle card and the one with long finned heatsinks facing the case wall run well over 4.3-.5 THs each. They report chip temps of around 90C. The one with the short fin topsinks facing the case is giving a bit over 3THs and reports the chip temp as banging around 99-100C. The air coming out of that card is also substantially warmer than the other 2. Will measure temps tomorrow sometime.
The root problem is that the short sinks are presenting a much high airflow resistance because the flow channel is restricted by them and the case wall. If somehow move the cards over a smig, hell even 1/8" might do it, then airflow should remarkably improve.
A. is so far averaging just over 13THs
B. A thermal design issue raises it head with these. The middle card and the one with long finned heatsinks facing the case wall run well over 4.3-.5 THs each. They report chip temps of around 90C. The one with the short fin topsinks facing the case is giving a bit over 3THs and reports the chip temp as banging around 99-100C. The air coming out of that card is also substantially warmer than the other 2. Will measure temps tomorrow sometime.
The root problem is that the short sinks are presenting a much high airflow resistance because the flow channel is restricted by them and the case wall. If somehow move the cards over a smig, hell even 1/8" might do it, then airflow should remarkably improve.
yes short term I down clocked from 650 to 625.
But UPS was late.
I had to dissemble the avalon6s from the array.
My sprained ankle from 65 days ago still hurts. ( bitch to be 59 it would have healed in under 10 days when I was 25-30)
The mining gear is in a loft with a ladder.
First time I turned them on I climbed down the ladder knowing they were mining for bitmaintech. So we went to the pc to check them and setup kano.is
temps were very high chips in the 90's
only 2 machines and a large loft I was supposed to point miners in the direction in this photo
about 70 feet and an up draft fan in the center
Baller alert , you have one of those EGO eclectic mowers how do you like it ?
Wow nice S9's hopefully the price of them doesn't drop by half in a month or so lol but looks like you made the right gamble with the price of bitcoin skyrocketing.
Keep in mind on price right now your getting pre-having mining which is a big thing. It is before block reward so the miners will make more now vs after having. So a higher price now would make sense.
We have no idea what price will be after having but I would imagine cheaper due to not mining these day's before having, which again is huge to have in my eyes. I would guess price would reflect after... but how much I have no idea. But it is a tradeoff as you did not get the pre-having mining if you wait for a lower price.
Agree. The question is, and what counter acts the theoretical price drop after halving, is demand for coin. Before the run up the market took in the coins being mined and we have been at somewhat of an equilibrium. But that same demand for coins in 3 weeks can't be met.
Wow nice S9's hopefully the price of them doesn't drop by half in a month or so lol but looks like you made the right gamble with the price of bitcoin skyrocketing.
Keep in mind on price right now your getting pre-having mining which is a big thing. It is before block reward so the miners will make more now vs after having. So a higher price now would make sense.
We have no idea what price will be after having but I would imagine cheaper due to not mining these day's before having, which again is huge to have in my eyes. I would guess price would reflect after... but how much I have no idea. But it is a tradeoff as you did not get the pre-having mining if you wait for a lower price.
Well between the S9 delivery yesterday and the price going through the roof again today - In a week's time I have gone from squeaking out earnings of $40/day to just shy of $100 today. Too bad mining is dead.
Wow nice S9's hopefully the price of them doesn't drop by half in a month or so lol but looks like you made the right gamble with the price of bitcoin skyrocketing.
I had a S5+ that had two boards go bad. I thought hey let me take those two boards out and the air flow should be better. I was wrong. For some reason having only one board in the chassis was worse for the cooling. If I put two boards in there though temperatures for the working board dropped back down to normal. I don't know what the temp for the second board would've been if it was hashing as well.
or more. There's what, 21 sets of data cable connector pads? ... As I mentioned elsewhere, 2 s9 blades in a reused s7 case should make the thermal issue a moot point...
Save all your firmware.
My batch 1 and batch 2 s-7s were able to do,six units per controller . I never up graded firm ware on them as I,did not want to lose the feature.
Best case is the current s-9 batch one can do the four boards. And it. An easy fix.
It also cuts down on Ethernet cables as 4 boards to 1 controller means 12 boards need 3 Ethernet conections.
Not four Ethernet connections.
or more. There's what, 21 sets of data cable connector pads? ... As I mentioned elsewhere, 2 s9 blades in a reused s7 case should make the thermal issue a moot point...
So far, even having to down clock my b1 (now in my rather warm basement) to 600MHz to keep temps reasonable still liking them and looking forward to my b3.
Now only question is what to do with the s7's I have piling up as I take them off line to stay within my available power budgets. Got 5x 'spares' so far....
@ Sidehack - got power available for a couple s7's say directly pointed at your wallet (to pay for the electric) for you to play with optimizing?
Now only question is what to do with the s7's I have piling up as I take them off line to stay within my available power budgets. Got 5x 'spares' so far....
@ Sidehack - got power available for a couple s7's say directly pointed at your wallet (to pay for the electric) for you to play with optimizing?
I would love to see if an empty s-7 could fit two boards and link four board to the s-9 controller.
So far, even having to down clock my b1 (now in my rather warm basement) to 600MHz to keep temps reasonable still liking them and looking forward to my b3.
Now only question is what to do with the s7's I have piling up as I take them off line to stay within my available power budgets. Got 5x 'spares' so far....
@ Sidehack - got power available for a couple s7's say directly pointed at your wallet (to pay for the electric) for you to play with optimizing?
Now only question is what to do with the s7's I have piling up as I take them off line to stay within my available power budgets. Got 5x 'spares' so far....
@ Sidehack - got power available for a couple s7's say directly pointed at your wallet (to pay for the electric) for you to play with optimizing?
Looking good Phil.
I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling. I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it.
I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling. I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it.
yeah you would be correct if I was using it.
I will get to it since I will be using it with the next two s-9's
i am using the dual board 4000 watters pulling 2800 watts ac to do 27th.
Waiting on news for my batch 2 units.
I am hoping they ship soon. like tonight vs the 20th.
Looking good Phil.
I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling. I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it.
I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling. I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it.
I take it that the filter doesn't block that much air flow? I'm going to have to pick some of this up for my S7 that still whistles once in a while.
yes exactly that the filter is very lite duty.
I take it that the filter doesn't block that much air flow? I'm going to have to pick some of this up for my S7 that still whistles once in a while.
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