Bought 2x Intel Core i3-6100 boxed version and they have different fans: DELTA (12V, 0.60A) and NIDEC (12V, 0.28A) , both are PWM with 4-pins.
Mainboard is ASRock H170M-Pro4, BIOS v1.80.
BIOS CPU-Fan-Settings: silent.
Delta fan:
on power on, fan starts to rotate immediately, with about 1400 rpm. (if BIOS CPU-Fan-Settings: standard, then about 2100 rpm)
Nidec fan:
on power on, fan does not rotate at all, first as cpu temperature reaches 70°C fan starts rotating with >2000 rpm for few seconds, then stops again completely.
this is not good, i think!
With Nidec fan i have to set BIOS CPU-Fan-Settings to "standard" and not "silent", then it rotates allways (except 10 seconds after power on) with >2000 rpm, that is very loud!
Can somebody confirm this behavior?
Foxconn has also 12V 0.17A fans and Nidec has another 12V 0.20A fans. But i do not have them here for tests.
I also checked my older Core i5 Sandy and Ivy Bridge, they all have DELTA 12V 0.60A fans, they are all silent and rotating all the time, other as my new NIDEC 12V 0.28A fan.
Intel Core i3 i5 i7 boxed cpu cooler and PWM fan suppliers problems: DELTA good, NIDEC bad, FOXCONN?
I have an Intel TS15A cooler, so where would I see the manufacturer of the fan?
EDIT: The manufacturer of my fan is DELTA ELECTRONICS and is rated for 0.6A on the 12V rail.
No problems with DELTA, but NIDEC are strange behavior.
I think they use NIDEC on the newer ones now. I’ll have a check will all the fans since I build computers for customers to get a consensus of the probability of getting NIDEC.