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i5 4690K Unstable at pure stock on MSI-G55

T

TerpSkinEm

Junior Member
Just finished building a new system. Spec:

CPU: Intel Core i5 4690K
CPU Cooling: Cooler Master Hyper 212 EVO
Mobo: MSI Z97-G55 SLI ATX
RAM: 4GBx2 Kingston KHX1600C9D3K2/8GX
GPU: ASUS GTX770-DC2OC-2GD5
PS:CX750 750W RT

I'm having issues with system stability with everything at stock settings. I did a Mobo BIOS update and CMOS clear to ensure.

I'm using an OCZ SDD from a previous build, so from cold I was able to boot straight into Windows.
The system ran fine for about 2-3hrs before BSOD. Then could not boot back into Windows.

MSI BIOS reported CPU temps around 40~44C and system temps ~35C. After a minute or two in BIOS system would hang.

Came back the next morning, was able to boot in Windows fine, but again after 2-3hrs BSOD and unable to restart. I was able to boot into Ubuntu on a second HDD, but that would hang after opening a browser and starting a youtube video.

Ran memtest for about an hour, no errors reported. Removed from system but one stick of RAM, boot drive and the CPU, still had same issues.

Looking through the BIOS, I noticed that CPU Core voltage was report to be set at ~.985V (Auto) with MSI's CPU Core voltage mode also set to Auto.

I bumped the CPU Core voltage to 1.05V and now the system is rock solid.

I am concerned that the stock settings do not produce a stable system. Is this normal? Do I have grounds for a return of the CPU, Mobo or both?

Or did I just win the lottery of crap CPU samples?

Thanks
 
TerpSkinEm said:
Looking through the BIOS, I noticed that CPU Core voltage was report to be set at ~.985V (Auto) with MSI's CPU Core voltage mode also set to Auto.

I bumped the CPU Core voltage to 1.05V and now the system is rock solid.

I am concerned that the stock settings do not produce a stable system. Is this normal? Do I have grounds for a return of the CPU, Mobo or both?

Or did I just win the lottery of crap CPU samples?

Thanks
Click to expand...

Hmmm that voltage isn't bad and it's stable (so far). If you have the option of no cost return/exchange I'd be tempted to do so.
 
It could be that an error in the BIOS is not setting the required voltage for that CPU. I might try flashing it, or trying the CPU in another board before blaming it.
 
The default Core Voltage (VID) for your particular CPU is burned into the CPU at the factory. If you've got a CPU whose VID is too low for stable operation, then it is defective.

That being said, it will probably happily run at 1.05V for many years. You could also try increasing the Load Line Calibration level while keeping the vCore at stock. It's up to you as to whether or not you want to exchange the CPU.
 
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