Overclocking problems please help

Hardware Hub Overclocking
1

Hi all  I have some issues regarding moderate overclocking on a 3570k and wouldn't mind some input if anyone can help.

Firstly i just purchased the xigmatek dark knight night hawk edition to cool my 3560k which is in an asus p8z77-v-lk motherboard. I noticed a massive drop in temperatures on stock clocks at idle and under load through the difference between my coolest core #0 and my hottest core #2 is about 10 degrees no matter what the conditions i did some reading and some people said some cores will run hotter because single core programs will run on them etc i didn't really understand it but i am kind of dubious as i think whilst i seated it my opinion well the one core might not have been covered well (i used the pea method) I wouldn't mind some input regarding this.

Secondly having recieved my new cooler i propmtly overclocked it to 4.5ghz in the bios this is my first time overclocking as it is my first build. I used the offset mode for my voltage setting it to 0.055v  after this was the lowest stable, which to my understanding is on top of what ever is typical. I ran prime 95 for like an hour no issues and was getting temps of around 60 and was content with this the voltage on the vcore in windows was reading 1.164 under load anyway i used it for a day or two before my computer started blue screening not even under load at first i didnt suspect voltage since i had had no issues so far but eventually i had to bump the offest up to 0.11 double to get it stable again. ADoes anyone no why this variation is needed and my vcore now reads 1.224 ia thia this too high in peoples opinions should i be able to go lower

thank you in advance i know there is probably stuff out there about this but everything i found seemed to be the similar but not applicable to my situation or past my depth of understanding

2

Finding the sweet spot with offset mode takes a lot of patience and time. What is stable during stress testing sometimes isnt stable on idle. 1.224 volts for a 3570k for 4.5ghz is pretty darn good man!

3

Don't worry about your core difference. I also have this issue, every time I put my cooler back on, my third core is always hottest. As long as it is within safe temperature range your ok.

As for voltages, are you using any of the features of the board? I know that on my p8z68-v, LLC voltage control is very useful in keeping voltage stable and fighting "voltage drop" under load.

4

OKay thanks its just that it was working fine on a very low voltage for like two days i tested games whilst running prime95 and left it on for hours no problems then suddenly it wouldn't even boot windows and i had to up the voltage but anyway i won't try to go much lower as i'm pretty content with temps

5

The core thing was troubling me most so thats good to hear, no I'm not currently i just had a look in AI suite three and well it seemed a bit past my skill level and i would prefferably like to do all my overclocking through the bios because i enjoy playing with different OS's. Thank you for your input

6

When overclocking you increase the stress on your CPU components and an overclock will be stable at first but after a bit the silicon will "wear" a bit so you'll need to up the volts a bit more to make it stable again, don't worry though you won't kill your CPU solong the temps are safe and the voltage isn't too high.