Last question about Burn-in

[omni99]

Celeron 633@890 Abit BX133 Gold Orb(the new "Huge") lapped(good seat) 2 case fans+PS fan...cpu stock Volt 1.7
ok my last questions are...
(1)what temp should i want for burn-in. Obviously the whole point of burn-in is to build up heat...so please help on the temp and safe temp i should be reaching. I was running seti@home and CPU test..and i was also running internet all same time..i know the CPU was "LOADED!" hehee it got up to 44c
(2) How long should I burn in for?
hmm i think thats about it..unless ANYONE has other tips???? :)
thanx guys!

[bdf24]

From what I have read and seen. I don't think burn-in really has anything to do with heat. All it is is getting a cpu use to running at a certain speed. sometimes when this occurs you are able to reach higher speeds then you previously could. This is done normally by upping the voltage a bit. Then Sometimes you are able to back the voltage down and end up with the same stability after around a week or two. Then you may be able to reach a higher clock speed again by upping the voltage again and doing it all over again.
But it is still very important to keep your cpu running as cool as possible.

Some people believe in it and some don't. I haven't seen it to believe it occurs. I have a PIII 800E which I have had running at 960mhz for around 3 or 4 months @ a voltage of 1.85. I still cannot back the voltage down and keep the stability. So I'm a little weary about whether to believe in burn-in or not.

[Spode]

ask anyone who knows me, I'm a huge disbeleiver in burn-in. But the other week something strange happened to me. I'm not going to talk about what happened until I get another chip to conduct an experiment scientifically.

But I will tell you this. Unplug the fan. Just leave it at normal speed/ non -overclocked. Put the cpu at load and run it until it's around 55-60c. The sink should be around 70c+. Then plug the fan back in while it's still at load. you may find it helps.

AS I said, until I try it scientfically - I'm putting down what happened to me as a coincidence of some sort.

[Phil]

From what I have read from tech papers burn in's work best at low temps and high voltage as it does something the the silicon oxide on the transistor gates which allows a cleaner signal to pass through and dispite the name doesn't have anything to do with heat. From my experience I would agree as I bought a celeron 600 which would do 900 out of the box at 1.75v after a week of normal usage it would run at 1.7v and after burning it in at 600 with 2v it will now do 1008mhz with 1.9v which it wouldn't do before. Thebest way would be to underclock it and run it at high voltage but this isn't possible on celerons but should work on p3's with a motherboard that will run at 66mhz fsb.

[omni99]

anyone know where there is info..or maybe someone here can tell me safe voltages i can run up to? my 633 id default 1.7 i think(geez cant remember!)..and is it safe(as can be expected anyways) to run 1.9??? I know overclocking is always risky? but i only wanna play it safe as possible..hmm "find the happy meduim, ya know".
also what is the scoop on stepping? i my cpu is a SL4NY and i think the stepping is C (looked it up once) but im not sure what stepping is for?? :)

[bdf24]

Well, I'm taking Phil's suggestion. I lowered my FSB to 66mhz and jacked my voltage up as high as it will go to 1.9v. I'll leave it there for a week and see if anything happens.

[batboy]

Using the "burn in" method doesn't always work with all CPUs, but it does seem to work with some. It's worth a try in most cases. I like to limit air cooling to 1.9v on the coppermines, but under load (even at default speed) you'd better have good cooling. In my opinion, those Orbs fizzle out at above 1.8v or so. During the burn in, give the computer something to do. Like the Unreal demo loop or Sandra's CPU torture test, etc...

[Phil]

for celerons and pIII's I wouldn't advise going over 1.9v and never go over 2v as I know people who have had chips only last a week when they set them to 2.05v and 2.1v, I find that seti is good for a burn it and I also run sandra's burn in wizard when I am not using the pc as it uses every part of the cpu including the sse and memory but you can't run it if you are using the pc as it freezes it up because it has a high priority.