Today I've updated the bios from 0207 to 0404 latest version and I've noticed a significant drop in RPM on my CPU fan. From 2100 RPM to 870 RPM. after updating the bios and restarting it ask me if I wanted to select the bios default settings and I chose OK. Note that I don't use EPU-4 Engine, although when I did some tests a while ago, when I chose the "Max Power Saving Mode" or "Auto Mode", RPM also dropped from 2100 RPM to 870(relative). I don't know what to say about this, maybe it's just a coincidence.
Does anybody know why my CPU fan RPM dropped that significantly and how to fix it?
Hey, Thanks for replying. I've found what the "problem" was, the Q-Fan option was enabled. It seems that this version of bios enables it by default, I actually checked the bios settings twice before posting, but somehow omitted that option, so sorry for that.
For the ones who are interested in this subject I did some tests and found out the performance is exactly the same whether Q-Fan is enabled or not, however the CPU temp it's a bit lower (about 5 degrees celsius) if Q-Fan is disabled (obviously since the RPM is much higher).
I did some tests with a few apps, I got almost the same results from all of them, so I'll just post the temps and RPMs from Crystal Mark:
41 °C - 2240 RPM - peak load Q-Fan disabled
46 °C - 920 RPM - peak load Q-Fan enabled
I don't really know how good these tests are, probably not that good considering that it doesn't stress out the CPU to the maximum.
And temps in idle:
32 °C 1900 RPM
33 °C 870 RPM
So from those tests it seems that for about 1400 RPM extra you get -5 °C, which doesn't really seem to be worth it.. I don't know...perhaps someone knows more about this...