i5-4670k not stable at 4.4GHz

[cingelj16]

Hello, I've read here that you can reach 4.4 GHz stable with haswell cpu's. But I cannot get my i5-4670k to run stable at 4.3 or 4.4.

It is currently stable at 4.2, but I would like to try and reach 4.4.

Sorry if i seem noob-ish, this is my first attempt at OCing. I literally just followed what the guide said, not knowing a lot about what each change does. I have an MSI z87-GD65 and here are some screenshots of my overclocking profile.

At 4.3 GHz my PC randomly shuts down and at 4.4 I blue screen with an "Uncorrectable hardware error" message.

Not sure if this matters but my memory is overclocked for 666 to 933.

Thanks for the help!

 

[gilbadon]

Core clock is king. Reduce your memory overclock to factory and leave it alone.

Next, what voltage do you have the core set at? You will not get higher clocks without increasing voltage.

Next, what CPU cooler do you have. You do not want to overclock if you are going to burn the computer up

 

[cingelj16]

Here are my voltages: http://imgur.com/a/0OxWL
I have a Coolermaster T4, my stress test at 4.2 GHz runs below 75 Celsius.

 

[Pr3di]

The Haswell CPU`s are a luck of the draw.
If it makes you happy, I spent days trying to get my i5 4670k CPU stable, and it can`t even hold 4.0 Ghz.
Remember, there`s no guarantee anywhere that you will be able to OC your CPU to a certain limit.

Just be happy that you still manage to get to 4.2 Ghz. That`s still around 20% increase over the base clocks.

 

[bicycle_repair_man]

I've had a read through the guide and think it's much too generic. A quick and easy fix for overclocking isn't the right way to go about it; you need to understand exactly how the process works, what VCORE is and how it relates to clock speed. You also need to understand the risks so you don't damage any of your expensive components.

I suggest that you give this guide a read, it's the same one I used when I started to overclock; http://www.tomshardware.co.uk/forum/272214-29-wolfram-beginner-guide-overclocking.

Overclocking is never an exact science, and two seemingly identical processors won't necessarily overclock the same. This is another reason why it's important for you to understand the process, as you can't rely on other people's numbers.