Hi.
Yes this is surprising especially when so many discussions are here on forum: will X56xx family run on 4-memory-slot version? Yes it will, but can be that BIOS update still has to be done with older, supported CPU.
I have been doing quite some video encoding and it was solid as a rock, all cores 100% loaded. I haven tried any gaming yet, but it its still to come.
Your explanation about BIOS downscaling makes sense, however I haven't seen anything like this before. Also that mismatch of naming 'front fan' used in manual and PCI fan used in BIOS is really interesting.
At the moment I'm looking for answers:
Where memory temperature is measurement is taken from? For instance I just turn on Z400, enter bios and already it shows 55 degrees. Also just touching by finger I cannot find memory or any element in nearby to be significantly warm.
I wonder can it be BIOS bug that it says memory 55 degrees, while it's most likely chipset temperature? Tomorrow I will put heardryer on chipset while in BIOS and truth will come out.
I'm trying to find out which factors will cause PWM to grow unnecesairly (for instance I wonder if that 'memory temperature' is not bringing it higher). I could determime, that thermal sensor that goes with power button influences PWM a lot, so just warm it by fingers and there is immediate fan response. And the same with cooling it down, fans immediately spin down.
Nevertheless the lowest PWM I saw so far in this workstation was around 40 % and whole thing was surely idle. Can it be lower?
Tomorrow I will mount all Noctua fans, so this matter will change, as these fans are very quiet and there is still option to limit their RPM still maintaining PWM working.
Greetings,
matroX