Overclocking question (4770k)

[davk]

Hey everyone,

I built my brand new pc yesterday and I decided that i would like to overclock my cpu.

My cpu is the i7 4770k and I would like to get it to 4 GHz but I have NO clue what voltage I should dial in..

I'm using the Asus Z87-Pro and a XFX Pro 550w psu.

And the cooler is a Corsair H55

Thanks in advance!

[Godlygamer23]

1.2 for general voltage. Then you can later fine-tune it.

[ProKoN]

what cooler are you using?

[orangecat]

1.2-1.25 should be good for starting and when its stable turn down your voltage a tiny bit until you get your lowest stable voltage.

[ProKoN]

on my 4770k

 

im running

 

1.35V to reach 4.6GHz stable

 

1.41V to reach 4.7GHz stable.

 

I havent tested anything lower than 4.6GHz

[mvitkun]

bring the 4770K back to stock clocks and back to auto voltage.

 

download HWinfo64

http://www.hwinfo.com/download64.html

 

install it.

open the program,and then when it asks choose "sensors only" and run it.

 

then while HWinfo64 is open run prime95 for 5 minutes.

http://www.mersenne.org/freesoft/

 

while it's running in HWinfo watch the core temps,and watch the cpu vcore.

 

then check HWinfo in the 3rd column,it should be titles "maximum" at the top.

and look at the cpu vcore.

 

write down that value,or remember it.

 

then go into the bios,set the turbo value for each core to whatever you want the clockspeed to be. (40=4ghz,45=4.5ghz)

I would say pick something safe but beneficial like 42-43.

then under the cpu vcore change it to manual,and then change it to the max value you got while running prime95.

 

then save changes and boot up into windows.

 

run prime95 for 4+ hours.

 

if it's stable (doesn't BSOD,crash a worker,or freeze windows) try lowering the voltage 1-2 notches,then test for 30-60 min.

continue to do this until it's unstable,use the lowest stable voltage.

then when you find that lowest stable voltage,test in prime95 for 4+ hours.

 

if it was not stable(and it should be since it's a small overclock) then raise the voltage until it is stable,as defined above.

[Karlos]

If your mobo supports AI Suite from Asus, it includes an utility that can do the overclocking for you in a safe way, especially if you are not very experienced with dealing with OC'ing voltages.  

 

Here's a video on how the utility works and how to use it. I'm not sure if it's compatible with all Asus boards but it won't hurt to try.

 

 

 

Hope this helps.

 

 

*Second thought, I would consider this as a last resort. I would try to learn and do it on my own before using any utilities. 

[raxx]

According to JJ there in that video, Prime95 isn't validated for Haswell. So for me, I wouldn't run it on a Haswell chip. 

[ProKoN]

i would suggest using Intels Extreme tuning Utility to stress test . It is Validated by Intel to properly stress your new Haswell CPU.

 

http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-boards-software-extreme-tuning-utility.html

 

Here is what MSI recommends for acceptable cpu voltages.

 

 

 

Im having a hard time beliving JJs results.

 

He has not provided any Validation, not even a cinebech score. Sure he can start stress testing, but for how long, we dont know.

 

you never get to see what his ring bus is set at ( very important to haswell), he says its 1:1 but shows no proof at 4.8GHz

 

he also seems to be basing overclock guides based off of his results with his cherry picked cpu, however he does mention some chips may require up to 1.4V to achieve 4.6GHz or more.
 

[Karlos]

I agree but that's not the topic here, the original post indicates he's aiming for 4 GHz which should be easy to get with this utility. Don't over analyse the video, it was just intended to provide an idea of how the application works and how it could help achieve a simple overclock without having to manually input voltages ect. This is only for OC not stress testing.

[Facety]

My 4770K runs 4 GHz on 1.08v (stock volts), it may be able to run it at lower volts since mine runs 3.9 GHz at 1.02v.

 

TTL has an overclocking guide for LGA1155 that I found really helpful even though the 4770K is LGA1150, pretty much the same principles apply.

 

Here is the link: https://www.youtube.com/watch?v=mBEeXajbG2o

 

Hope this helps

 

------ I'd suggest testing your stability with Aida64 though since its validated for the new instruction sets for Haswell

Edited June 29, 2013 by Facety

[guybates]

I also own the Asus Z87 Pro and used the 4 way optimize tool in AI Suite 3 to achieve 4.8 GHZ (it is stable and works) on a Kraken X60. JJ released a whole bunch of videos explaining overclocking methods for Haswell 4770K on the razethworld and techoftomorrow youube channel. I suggest checking out this video:

and this video: