Topic: Bitmain S5 Replacement Fan - page 2. (Read 4644 times)

Won't catch fire? Has anyone tried this and seen a decrease in temps?

Cardboard and Duct tape......

What's the cheapest/easiest way to close the case up?

No idea, then Closed case will make them run coolest as that forces air where it needs to be

Yes, open case. Going to try the Delta as push and stock as pull, but I think that will use more power than I wanted and will be louder than stock.

Running open case?

Just take 2 from the front to mount on the back

anyone know the size screws needed for the stock fan? gonna add a pull fan to the back. wanted the same screws.

I had to remove the black screws to get the Delta to fit flush. One unit running 60C/60C, the other 63C/55C, still not sure why it's uneven. The heatsinks got slightly bent while I was taking it in/out, but I got them almost back into the stock position. Not sure if the heatsinks would be causing such a temperature imbalance?

55 degrees Celsius in the room where it is 22 degrees or less.
but even if they increased the room temperature at 30 is really not more than 65 on S5.

Can I see Pictures

What temp's are you seeing with those fans?

I use this:  two pieces per S5
http://www.noctua.at/main.php?show=productview&products_id=78&lng=en


Size      120x120x25 mm
Connector      4-pin PWM
Bearing      SSO2
Blade Geometry      Heptaperf™
Frame Technology      FocusedFlow™
Rotational Speed (+/- 10%)      2000 RPM
Min. Rotational Speed (PWM, +/-20%)      450 RPM
Airflow      121,8 m³/h
Acoustical Noise      29,7 dB(A)
Static Pressure      3,94 mm H2O
Max. Input Power      1,2 W
Max. Input Current      0,1 A
Voltage      12 V
MTBF      > 150.000 h
Scope of Delivery      
Fan
4 Fan Screws
Warranty      6 years
Ingress Protection      IP52
Material      Fibre-glass reinforced polyamide
Motor type      Three-phase

But if you want more cool so I recommend this already but the noise level is insufferable:
http://www.noctua.at/main.php?show=productview&products_id=80&lng=en&set=1


Size      120x120x25 mm
Connector      4-pin PWM
Bearing      SSO2
Blade Geometry      Heptaperf™
Frame Technology      FocusedFlow™
Rotational Speed (+/- 10%)      3000 RPM
Min. Rotational Speed (PWM, +/-20%)      750 RPM
Airflow      186,7 m³/h
Acoustical Noise      43,5 dB(A)
Static Pressure      7,63 mm H2O
Max. Input Power      3,6 W
Max. Input Current      0,3 A
Voltage      12 V
MTBF      > 150.000 h
Scope of Delivery      
Fan
4 Fan Screws
Warranty      6 years
Ingress Protection      IP52
Material      Fibre-glass reinforced polyamide
Motor type      Three-phase

These fans are expensive but indestructible.
Corsair example, I broke when I accidentally tapped a finger in the propeller.
when I have tapped into Noctua, much it hurts and fans held as of stone.

Just 1 delta as a push. It's specs were close to the stock fan, so I was hoping it would do the job. After about 1h of testing it doesn't look awful, however one S5 is overheating only on one side (the other one is proportionate). Not sure what could be causing it - the fans are identical and were installed exactly the same way.

Push Pull? or stacked?

Just replaced the stock fans with the Delta's from the amazon link. A few notes:

- It's 4pin, but you still need to remove a piece on the connector to get it to fit in.
- For some reason, I can't get them to be flush against the metal of the S5 like the stock fans. There is always a hair-thin space.
- They are still pretty loud, but I'd say about 20-25% quieter than the stock fans. At full RPM, I'm seeing about 60dba, vs 75dba on the stock fans.
- They aren't cooling as well as the stock fans, but it might be acceptable. At stock frequencies, with 22C ambient, I'm getting ~61C on the Delta and was getting ~56C on the stock fan.

True, the thermometer is in the middle of the hashboard so whichever end the fan is on you get the same readout, but the chips next to the fan are colder than the readout, and chips on the back side are quite a bit hotter. The best solution would've been if there were 3 thermometers per hash board, one at each end and one in the middle.

Wouldn't doing that just make the other end of chips run higher? Whichever end is further from the fan will just run hotter, no?

or smartly... run the fan from the back to the front

Sounds as though BitMain should have put the thermostat at the back of the unit because those chips get so much hotter.