Using Dell N750P with Antminer S5

[gerardo15]

Hello There! I got today an DELL N750P to use with my antminer, i was using the jumper C2 To B2 but the PSU gets really hot , so i just removed it, its loud but i don´t care about the noise. my question is. Is it bad to leave the fan running at full speed? or should i consider lowering the fan speed somehow? but the C2 To B2 jumper gets the PSU really hot.

[1715053574]

1715053574

[1715053574]

1715053574

[1715053574]

1715053574

[Amph]

it's better to leave it around 50%, at full its life span, would be several reduced, if it is a new fan you will not notice it now, but in some weeks months, they will start to make a strange noise and the chances to break it will be higher

maybe you can add an auxiliary fan to sustain the temp

[gerardo15]

Ok! but what jumpers do i have to set to use it at 50% ?

[Amph]

wait because if the psu is really hot and the fan is set to auto, it mean that the ambient temp is already high and the fan need to run at max to cool the psu, so if you set it to 50% you need to ad another big fan to keep it cool enough

i don't know what jumper you need to use but i found for you this

http://www.rcgroups.com/forums/showthread.php?t=1799197 reead the last post Pin B2 to ground worked for me to slow the fan speed

[TazDevl]

Just acquired this powersupply. My psu has a jumper between A1, B1 and B6 (PS_KILL, GND to PS_ON) and a switch between B2 and B6 (PWM and PS_ON). With the switch off the miner boots but doesn't mine. When on the powersupply is extremely loud and the miner starts to work.

The jumper should have been enough for the PSU to power on?

I've got the feeling it's not wired optimally for low noise...

Yes... I realize i'm bumping an old topic