Definitive I5-2500k Overclocking Guide

dhill

dhill

dhill

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Just thinking that it might be useful if 8 Pack could put together a definitive guide to overclocking the I5-2500k CPU.

I for one would love some help and advice on getting a rock solid stable OC on my own I5-2500k which is paired with the popular Gigabyte GA-Z77X-UD3H motherboard and Kingston HyperX 8Gb 2133Mhz Ram along with the Antec Kuhler H2O 920 CPU cooler and a Sapphire Radeon HD 7850 OC 2Gb GDDR5 GPU.

A definitive guide to what voltages and frequencies are safe for the cpu, ram and GPU (if possible) etc would be awesome.
 
I certainly can. I have this board here next to me as its popular at OCUK and I am putting together some overclocking profiles for it and different chip combinations.

Just give me time to sort out this office and I will give you a more detaled response in the mean time observe the following and your part way there.

VTT/ VCCIO which is IMC volts keep this below 1.15v. For your chip and memory 1.075 is ofte then sweet spot.
PLL Try both high around 1.9 not going above 1.95 and low 1.65 depending on what the chip likes this will help bring Vcore down for a certain frequency so do tune this.
For vcore listen to your chip. Once the linear frequency of adding Vcore to gain in frequency rises sharply back off and you have the weet spot for your silicon for 24/7 use eg 4.5 needs 1.2, 4.6, 1.225, 4.7 1.25, 4.8 1.4 you know the chip is gonna be consistently stabe at 4.7.

For stability testing dont do hours and hours its un-natural load on the components. Use your pc to gauge if its truly stable for the demands you put on it.

Then tune the memory!!! To get even more performance. I will look at this too with your sticks or similar IC's and post back.
 
Thanks for that 8 Pack I wasn't expecting a response so promptly, especially since you've barely got your feet under your new desk...top man!

If you could put together some overclocking profiles for the board with different CPU's that would be awesome and help out a lot of folks on here I would imagine.

For reference, my memory is the following: KHX21C11T1BK2/8X
 
Very much appreciated 8 Pack, I look forward to reading your results :)

Your certainly going to find yourself very busy on here that's for sure! lol

Too true!!! I know this already guys. But I am pleased to help.

Good idea I will look at whats already been done and refresh.
 
Well this is exactly what I wanted to know! Shall have a play with this tomorrow since newly got my PC under water.

You might want to have a peek over the OC guides on here and give them a refresh with any expert advice you may have.

Thanks!
 
Am I right in thinking that offset overclocking is the best way forward with the 2500K, as opposed to traditional old school fixed vcore overclocking? Certainly in terms of temps and voltage it seem's that it's the sensible way forward.
 
I like a stable voltage when overclocking. I can clock with offset yes of course but I like the volts to be there to maintain stability all the time.

Its your call we can do it either or indeed both ways.
 
8 Pack said:
For stability testing dont do hours and hours its un-natural load on the components. Use your pc to gauge if its truly stable for the demands you put on it.
Click to expand...

First off, this thread has been helpful so far, Thanks 8 Pack..

Second, How would you test the stability of your overclock on a gaming PC?

It's great to have a true expert around. :)
 
Doomedspeed said:
First off, this thread has been helpful so far, Thanks 8 Pack..

Second, How would you test the stability of your overclock on a gaming PC?

It's great to have a true expert around. :)
Click to expand...

I would play my games mainly!!! easy and fun!!!

Stability testing I do this way. memtest the dimms, Prime 20 mins blend, Unigine for the graphics looped for 20 mins. Then just use the PC, using is the definitive test as it proves the box is stable for what you need it to be stable for. I then adjust from there depending on which problems I observe but 99% of the time there is non!!!!
 
Cheers for the input 8 Pack, I don't mind doing the overclocking either way.

I just thought that vixed voltage overclocking was the ole' school way of doing things, and that Sandy Bridge and Ivy Bridge were better off on an offset overclock.

But having said that, I'm more than happy to go with which ever method you think is best for the 2500k....you are the Jedi Master when it comes down to all things overclocking mate :)
 
It is your choice I can guide you either way. You ask me what I use?? Then its fixed all the way in my clocking.
 
I know that you've been a very busy man since joining the Overclockers team 8 pack. But I was just wondering if you had made any progress with this at all yet?
 
I have taken a 2700K cpu out of stock to do this work yeah but not got any further due to time constraints. Its on my list of work to do.
 
8 Pack said:
I have taken a 2700K cpu out of stock to do this work yeah but not got any further due to time constraints. Its on my list of work to do.
Click to expand...

Use a Asus Maximus V formula board would be nice - mind you I am biased as I have one, and a guide using this board would be good for me.

Mark
 
all id like to know is what is the max temp you would like to see when gaming for a 24/7 overclock. im having fun working the rest out for myself. my reason for asking this is my rig is in the kitchen so the oven and tumble drier can be a major factor in my gaming temps lol
 
pob9 said:
all id like to know is what is the max temp you would like to see when gaming for a 24/7 overclock. im having fun working the rest out for myself. my reason for asking this is my rig is in the kitchen so the oven and tumble drier can be a major factor in my gaming temps lol
Click to expand...

why would you put your pc in the kitchen:S
 
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