CPU Fan NOT spinning, yet not overheating! Fast answers apprecitated!

azzidodabass · 27 Jul 2012 at 16:40

Hi guys

Am really confused here.

I just got some new kit delivered, Gigabyte 7ZZ-UD5H mobo with i7 3770k CPU.

I also bought an Artic Freezer i30 with it.

The fan is connected but it doesn't seem to be spinning. Or, sometimes it does and sometimes it doesn't

When sat in BIOS it doesn't spin, unlesss I give the fan a push and then it will start spinning.

It booted into Windows and I pottered around a little bit, nothing intensive - when I loaded speed fan, the fan was NOT spinning, but the core temps were reported as between 18-20oC

in BIOS, the CPU temp is reported as 38-40oC

Is the fan faulty or is it not spinning because it doesn't need to to keep the CPU cool?

Any advice appreciated.

Grimley · 27 Jul 2012 at 16:48

on some motherboard bioses, the CPU fan will only spin above a certain CPU temperature. I'd check the instructions to see if your motherboard does this.

azzidodabass · 27 Jul 2012 at 16:56

Doesn't say anything about it, just that the fan should be one that has speed control on it which I am assuming the fan that comes with the i30 does!.

Very confusing. I dunno whether I am safe to use it or not.

Attu90 · 27 Jul 2012 at 17:50

Are you sure you have it connected to the correct header of the motherboard ?

There is no way 18-20oC is a correct temp even sat at idol so regardless what the fan is doing there is something not right.

Id try a cmos reset and load failsafe settings in bios and see if that changes anything, ive got the same fan on a Gigabyte Z77-D3H whth a i5 3570k and my fan is always on.

azzidodabass · 28 Jul 2012 at 01:25

Well,
What a horrible day that was.

The fan issue, I dunno what the hell was wrong with the fan, I ended up using another fan which spins all the time.

I have a couple of questions about the kit I have bought.

In the CPU monitor I use, the 3770k reports as 8 individual cores, though I thought there were only 4 cores on the 3770k?

Regarding the temperatures:
I am current transcoding an mkv to mp4 in Handbrake on OSX (hackintosh).
All 4 cores are reporting temperatures of around 30-35oC idle, and under full load (encoding video) they are averaging 57-60oC.

This is at stock speed. I havent decided whether I am going to overclock, but given this CPU is meant to be overcloked, it would be foolish not to. I just worry about the temps.

As far as I know, CPU's normal operating temperatures are well within lik 70-80oC right? So even if I O/c and the temps rise to 70oC average under full load, this would still be reet right?

Cheers

j05e · 28 Jul 2012 at 03:01

azzidodabass said:
Well,
What a horrible day that was.

The fan issue, I dunno what the hell was wrong with the fan, I ended up using another fan which spins all the time.

I have a couple of questions about the kit I have bought.

In the CPU monitor I use, the 3770k reports as 8 individual cores, though I thought there were only 4 cores on the 3770k?

Regarding the temperatures:
I am current transcoding an mkv to mp4 in Handbrake on OSX (hackintosh).
All 4 cores are reporting temperatures of around 30-35oC idle, and under full load (encoding video) they are averaging 57-60oC.

This is at stock speed. I havent decided whether I am going to overclock, but given this CPU is meant to be overcloked, it would be foolish not to. I just worry about the temps.

As far as I know, CPU's normal operating temperatures are well within lik 70-80oC right? So even if I O/c and the temps rise to 70oC average under full load, this would still be reet right?

Cheers

If it supports hyperthreading then it will show up as 8 cores. Which cooler are you using?

sadbuttrue · 28 Jul 2012 at 11:11

If the fan needs a push to start spinning that suggests the bios is not sending a high enough PWM signal or voltage. Many fans have a rather high minimum speed. You'll need to edit the fan profile in bios/software.

azzidodabass · 28 Jul 2012 at 16:07

I am using an Arctic Freezer i30 cooler. Though I replaced the fan that came with it with an Asaka one from my old cooler as this one wasn't spinning up all the time.

Bit concerned about the temps though to be honest. I clocked the CPU to 4.5ghz just to see what would happen, it booted up but the temperatures under load were registering as 80oC. I dunno how accurate that is though. I am using OSX and not sure how well the sensors are reporting to OSX.