External test setup doesn't work as expected

U

Ununtrium

New Member
Hello,

I started building my first self-assembled PC today and I think I'm running into a problem. This is my basic build:
ASRock Z77 Extreme4 Motherboard
Intel i5-3570K
EVGA Geforce 670 FTW
Corsair TX750 v2 PSU
Cooler Master Hyper 212 EVO

So before assembling into my case, I decided to give the setup an external test and I installed the CPU and heatsink, put in the CPU fan and connected the Power Supply and GPU. On switching on the setup after connecting my GPU to the monitor, it seems to boot up fine and I am put into the UEFI BIOS. But the BIOS tells me that the CPU is at ~50 degrees Celsius. From what I've read, the temperature shouldn't go above 40 degrees. Also, the fan turns on on bootup, but then turns off. I set the target temperature in H/W monitor to 45 degrees, automatic made, full on, everything. That thing doesn't want to rotate. The wires of the fan look fine, no disconnections or anything.

I connected the fan to another CPU fan plug (3-pin, whereas my fan has a 4-pin plug) and boot up again. This time the fan rotates (so yes, fan works fine) but its very slow. BIOS tells me its at 200-300 RPM even though the CPU is at 45 degrees. Setting fan speed to Level 9 (highest) doesn't change anything.

Is what I'm seeing normal? Will the temperatures become normal once its inside my airy Corsair 500R?
Also, Dr. Debug is stuck on code A6. I presume its because I have no hard drives connected yet, but please confirm this.

Thanks.
 
What you're seeing is normal. With Intel SpeedStep it will spin the fan down until it needs to kick on - that's what the 4th pin on the connector is for.
 
Okay, thanks a lot for your help!
I was just surprised to see the fan not running even though my CPU was at 50 degrees. And now hopefully, as you said, I'll see better temperatures once my OS is installed.
 
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