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Topic: New one fan S7 - page 4. (Read 9695 times)

newbie
Activity: 9
Merit: 0
April 06, 2016, 08:30:43 PM
#66
4500 rpm (two fans) were producing incredible noise at >=72dB.
I wonder how 6k rpm fan sounds like?

Noise    64 dB(A)
http://www.digikey.com/product-detail/en/delta-electronics/QFR1212GHE-SP01/603-1165-ND/1850534
sr. member
Activity: 546
Merit: 253
April 06, 2016, 03:41:36 PM
#65
Rumour has it that Bitmain is planning on releasing S7-F0 model for the next batch.

How often do they release new batches?

his comment of an s7-f0 is a joke. saying that the current version (16) is the s7-f1 (one fan unit) with the s7-f0 (being 0 fans).

but as far as batches. they seem to have a new batch lately every 2-3 weeks. Seems to be every production run is a new batch. ie they have 1000 made and thats 1 batch. then another 1000 and thats another batch.

Thanks for the clarification. I totally fell for it.  Huh
sr. member
Activity: 266
Merit: 250
April 06, 2016, 03:05:04 PM
#64
Rumour has it that Bitmain is planning on releasing S7-F0 model for the next batch.

How often do they release new batches?

his comment of an s7-f0 is a joke. saying that the current version (16) is the s7-f1 (one fan unit) with the s7-f0 (being 0 fans).

but as far as batches. they seem to have a new batch lately every 2-3 weeks. Seems to be every production run is a new batch. ie they have 1000 made and thats 1 batch. then another 1000 and thats another batch.
sr. member
Activity: 546
Merit: 253
April 06, 2016, 03:01:39 PM
#63
Rumour has it that Bitmain is planning on releasing S7-F0 model for the next batch.

Any word on the specs? How often do they release new batches?
sr. member
Activity: 266
Merit: 250
April 06, 2016, 01:18:44 PM
#62
by removing plaque which replaces the fan.
the holes may be below.
Let 's hope it is the same case.

looks like they just replaced the back plate of the unit which had the screw mounts for the fan with the new grating as it is using the same mounting holes as the previous backing plate (right in the corners)

Then adding the Sanyo ace that I supplied for the last avalon6 group buy should fix the issue.

you wont be able to mount it with screws but i think small zip ties would work to mount the fan to the grate.
legendary
Activity: 1036
Merit: 1000
April 06, 2016, 01:18:06 PM
#61
Rumour has it that Bitmain is planning on releasing S7-F0 model for the next batch.
legendary
Activity: 4116
Merit: 7849
'The right to privacy matters'
April 06, 2016, 01:17:12 PM
#60
by removing plaque which replaces the fan.
the holes may be below.
Let 's hope it is the same case.

looks like they just replaced the back plate of the unit which had the screw mounts for the fan with the new grating as it is using the same mounting holes as the previous backing plate (right in the corners)

Then adding the Sanyo ace that I supplied for the last avalon6 group buy should fix the issue.
sr. member
Activity: 266
Merit: 250
April 06, 2016, 11:29:05 AM
#59
by removing plaque which replaces the fan.
the holes may be below.
Let 's hope it is the same case.

looks like they just replaced the back plate of the unit which had the screw mounts for the fan with the new grating as it is using the same mounting holes as the previous backing plate (right in the corners)
legendary
Activity: 3318
Merit: 1848
Curmudgeonly hardware guy
April 06, 2016, 11:25:08 AM
#58
Probably about like a couple SP10.
legendary
Activity: 3738
Merit: 3848
April 06, 2016, 11:17:16 AM
#57
Avalon6 does well with 1 fan, but it's also about 30% less heat. The S7 (current design) has quite a bit more solidity of the airflow path, which means constriction, which means more pressure needed to move enough air through to adequately pull heat away. If they've worked it out to where one fan can do it without bursting into flames, that's great. But what's the practical upperbound for intake air temperature?

yeah, the summer is coming fast...
this fan is supposed to be 6000rpm vs 4500 for the two fan ones.
4500 rpm (two fans) were producing incredible noise at >=72dB.
I wonder how 6k rpm fan sounds like?
legendary
Activity: 4116
Merit: 7849
'The right to privacy matters'
April 06, 2016, 07:00:20 AM
#56

@ mtmining2

try fan speeds  65 to 70% was top speed on batch 1 to batch 15

so


clock the gear to freq  500 fans to 70%   check temps under 65 c    fan rpms  about 5500 and errors less then 0.0100
clock the gear to freq  525 fans to 70%  check temps  under 65 c    fan rpms  about 5500 and errors less then 0.0100

see how high you can go with freq and keep temps under 65 c
see what you need to get  fan to do 5500 rpm  as this new delta rates 6000 rpm

 

buying this to think you will certainly do freq 700 is foolish

adding a second fan looks like  a project but possible.


@ generalt    finally tested the 2 gpus will send a pm

Won't you lose significant hashing power by dropping the frequency to 500. Thus reducing bitcoin profit?

Yes but finding safe numbers to not burn the miner is more important
Just buy a 120mm Noctua fan and put it on the miner. Save a lot of time and you won't have to deal with the freq and such. Or buy a cheap 120mm industrial pwm if you don't care about noise.I dunno if there's a place for a fan on this miner, but I doubt Bitmain would make a new chassis just for these batches.


wrong no place to screw it in = fact

you will need to figure a way out on how to attach it.
legendary
Activity: 1624
Merit: 1129
Bitcoin FTW!
April 06, 2016, 06:44:17 AM
#55

@ mtmining2

try fan speeds  65 to 70% was top speed on batch 1 to batch 15

so


clock the gear to freq  500 fans to 70%   check temps under 65 c    fan rpms  about 5500 and errors less then 0.0100
clock the gear to freq  525 fans to 70%  check temps  under 65 c    fan rpms  about 5500 and errors less then 0.0100

see how high you can go with freq and keep temps under 65 c
see what you need to get  fan to do 5500 rpm  as this new delta rates 6000 rpm

 

buying this to think you will certainly do freq 700 is foolish

adding a second fan looks like  a project but possible.


@ generalt    finally tested the 2 gpus will send a pm

Won't you lose significant hashing power by dropping the frequency to 500. Thus reducing bitcoin profit?

Yes but finding safe numbers to not burn the miner is more important
Just buy a 120mm Noctua fan and put it on the miner. Save a lot of time and you won't have to deal with the freq and such. Or buy a cheap 120mm industrial pwm if you don't care about noise. I dunno if there's a place for a fan on this miner, but I doubt Bitmain would make a new chassis just for these batches.
legendary
Activity: 4116
Merit: 7849
'The right to privacy matters'
April 06, 2016, 01:41:58 AM
#54

@ mtmining2

try fan speeds  65 to 70% was top speed on batch 1 to batch 15

so


clock the gear to freq  500 fans to 70%   check temps under 65 c    fan rpms  about 5500 and errors less then 0.0100
clock the gear to freq  525 fans to 70%  check temps  under 65 c    fan rpms  about 5500 and errors less then 0.0100

see how high you can go with freq and keep temps under 65 c
see what you need to get  fan to do 5500 rpm  as this new delta rates 6000 rpm

 

buying this to think you will certainly do freq 700 is foolish

adding a second fan looks like  a project but possible.


@ generalt    finally tested the 2 gpus will send a pm

Won't you lose significant hashing power by dropping the frequency to 500. Thus reducing bitcoin profit?

Yes but finding safe numbers to not burn the miner is more important
sr. member
Activity: 546
Merit: 253
April 06, 2016, 01:35:18 AM
#53

@ mtmining2

try fan speeds  65 to 70% was top speed on batch 1 to batch 15

so


clock the gear to freq  500 fans to 70%   check temps under 65 c    fan rpms  about 5500 and errors less then 0.0100
clock the gear to freq  525 fans to 70%  check temps  under 65 c    fan rpms  about 5500 and errors less then 0.0100

see how high you can go with freq and keep temps under 65 c
see what you need to get  fan to do 5500 rpm  as this new delta rates 6000 rpm

 

buying this to think you will certainly do freq 700 is foolish

adding a second fan looks like  a project but possible.


@ generalt    finally tested the 2 gpus will send a pm

Won't you lose significant hashing power by dropping the frequency to 500. Thus reducing bitcoin profit?
full member
Activity: 224
Merit: 100
https://eloncity.io
April 05, 2016, 09:12:40 AM
#52
hmm.. my S5 is still kicking. S1 died so was thing of using that that fan.
I shall wait and see how this S7-F1 performs in ZA temps.
newbie
Activity: 35
Merit: 0
April 05, 2016, 09:07:41 AM
#51
@philipma1957 That's the plan. Will start it out at ~500 and whatever % ends up being top speed for the fan and then work the freq up from there.
I have pretty decent ventilation in the garage so it doesn't get too hot but we will see. Also may have to wait a bit for a real "stress test" as the temps here aren't supposed to be over 60 F for the next week or so.

Now, if it won't do 700 then I may rig another fan to it... I have a few spares now so what the heck...
legendary
Activity: 4116
Merit: 7849
'The right to privacy matters'
April 05, 2016, 08:54:21 AM
#50
 
@ mtmining2

try fan speeds  65 to 70% was top speed on batch 1 to batch 15

so


clock the gear to freq  500 fans to 70%   check temps under 65 c    fan rpms  about 5500 and errors less then 0.0100
clock the gear to freq  525 fans to 70%  check temps  under 65 c    fan rpms  about 5500 and errors less then 0.0100

see how high you can go with freq and keep temps under 65 c
see what you need to get  fan to do 5500 rpm  as this new delta rates 6000 rpm

 

buying this to think you will certainly do freq 700 is foolish

adding a second fan looks like  a project but possible.


@ generalt    finally tested the 2 gpus will send a pm
newbie
Activity: 35
Merit: 0
April 05, 2016, 08:52:52 AM
#49
Just got my shipment notification so I will let you all know how it is. Should be here Thursday or Friday. It will be running in my garage here in North Carolina so it should be a decent stress test.
legendary
Activity: 1096
Merit: 1021
April 05, 2016, 08:01:40 AM
#48
It doesn't look like it has the screw holes to mount a second fan on the rear.  I guess it doesn't have to be mounted or you could just tape it or zip tie it there.
legendary
Activity: 3738
Merit: 1708
CoinPoker.com
April 05, 2016, 06:45:28 AM
#47
Would a S1 fan add any value to the cooling process?

No, but an S4/S5 would.
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