Gradual overclocking and burning in.

Arachnae

Arachnae

Arachnae

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So, I realised what a fool i've been the other day, and why it was taking 1.4V to get over 4Ghz.. seems it's a good idea to gradually build up the overclock.

I'm just wondering what the best way to go about this is?

Is it best to undervolt the cpu as far as possible at stock speeds first and let it run for a bit? Or do you find the highest clock you can get at stock voltage and then move on from there?

I've tested it and im able to run at 1.15V at stock speeds, and at 1 notch over stock voltage im able to run at 3.8Ghz. I'm currently running prime95 on it for a good 16 or so hours (72 degrees max temp)

What's the best way to move forward from here? Do you have to stress test it to get the chip used to the voltages you're putting it under or just have it running normally for a while?
 
Stressing it is just checking that when its underload it dos'nt fail. It dos'nt have to get used to the volts, so don't worry, ur just checking for stability.

So its kinda like when u first put ur settings in, boot up, ok its fine for booting up and runnning idle, but will it be underload, thats why we stress it, to see its max heat at said clocks and to see if its stable.

So u still have quite abit of head room on ur cpu, speed, volts and temp wise, you will most likely have to go into the 1.2-1.3 region for 4ghz, id be shocked if u could do it lower, if u can then nice cpu lol.

Keep testing away, basicly its temps and stability now. Good luck and forward u go.
 
Well I read somewhere else on here yesterday that 90% of the overenthusiastic newbies fail at higher clocks because they just throw the processors straight up to 4+ Ghz. It sounded very much like me so I'm just wondering whether there is such a thing as a "burn in", how much it helps and how i'd go about it :)
 
No need to worry about that, what usually happens is like u said when people rush in for high clocks without learning what there hardware can do and stuff.

You are doing it the right way, slowly going up in stages, honestly its the best way, as u will have nice clocks with low volts.

Personally for me i do the opposite way, i put more volts then i need, then work down, but either way works, its just how you prefer to do it i guess.

Many people think the people that have nice clocks just enter random things and bang u have it, they don't realise the time and effort required to tweak.

For example for my clock in my sig, i was at 1.2vore for like a month, then one day i thought lets tweak this some, and got my vcore down to 1.12.

Personally not sure what burning in would intail myself, i just stress test overclocks and if it dos'nt crash its stable, then i move on lol.
 
Well I'm hoping to be able to push it to over 4Ghz, maybe 4.2Ghz in the end, and i know my cpu will do 4.2 ghz.... but it needs around 1.42V to do it.. which to me is high enough not to bother with.. so i dropped it to 3.8 for the time-being.
so is burning in a myth?
 
Not to sure, i think people used to do it years ago, but not seen anyone do it these days on the newer cpu tech.

Then again iv only been overclcocking the past 2 years, so im still fairly new myself, hopefully some of the more experienced members will post and shed some light on it.
 
you shouldn't need 1.4 for 4ghz unless you have a poor chip. Try googling your batch number and see what other people with similiar chips are using. I've hit 4.2 under 1.3 volts. It was IBT stable but failed miserably at prime95. Think it wa more likely the ram as ioh volts etc were stock as was the ram. With a bit of tweaking it shoulf have been ok. This was with HT on.

I've turned HT off now which is causing all sorts of problems, presumably too many volts. I've stuck at 4ghz for now, it's ibt stable at max ram but blue screens after around 1.5 hours of prime 95. Will have another fidle tomorrow. Good luck with your OC.
 
Well I work 4 days on, 4 off.. so im gonna wait until im off shift to start fiddling again.

been running prime last night and while at work tonight... roughly 16 or so hours by the time i get home.

I'm, sure its stable right now, just attempting to burn in.. maybe im just talking nonsense though.
 
I decided to give it a quick go today.. 1.31V to get to 4ghz.. however oddly i seem stable under prime at 191 x 21 but not at 200 x 20.. any ideas? :/
 
Is it normal for a system to require different voltages to be stable at 20x200, 21x 191 and 211x19?

I'm seeming to struggle at keeping 200bclk which is a shame since it obviously makes ram frequencies a lot easier.
 
Arachnae said:
Is it normal for a system to require different voltages to be stable at 20x200, 21x 191 and 211x19?

I'm seeming to struggle at keeping 200bclk which is a shame since it obviously makes ram frequencies a lot easier.
Click to expand...

they "might" require different minimum voltages.
as for burning in, i haven't heard of this but im a newble O/C.

1.4 seems a bit excessive for 4Ghz, most seem to be able to get 4GHz under 1.35 it seems to be the jump from 4Ghz to 4.2Ghz needs the big jump in most cases (luckily enough not in mine, the voltage hike happens at 4.4Ghz).
Have you tweaked any other voltages?
 
DRAM at 1.66V
QPI at 1.35V (though when its on auto asus turbo reports it at 1.375!?)
differential amplitude at 900mv
clockskew at 100ps
 
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