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Intel E8400 ultimate overclocking

post #1 of 39
Thread Starter 
Hey,

I'm confused about my PC. I just was playing FoW (Faces of War, was making some map with the editor) and then it freezed, I couldn't do anything, only reboot and then I went into BIOS and changed some settings.

I wouldn't say this, but I really need help to make my CPU really fast and OC it as high as possible.

CPU:


MB:


RAM:


TEMP:


My RAM timings was 5-5-5-12, and I changed them 5-5-5-15 after the frozen game and I also set more voltage for CPU (1.20V > 1.22V).

What's wrong, I'd like also go higher than 4.05 GHz, I have ran Super PI successfully. I'm not going to run prime95 2000 hours to make sure that it's stable.

And btw, all my other voltage settings are on auto.

Specs:
Intel E8400
2GB Kingston KVR800MHz DDR2
Asus P5Q Pro
Enermax 520W Modu82+

I want all out of this CPU/PC. Just give me some tips, what should I change in BIOS to get fast PC.
Edited by Biatch - 12/22/08 at 7:22am
post #2 of 39
To tweak your e8400 to get to 4.0ghz you are going to have to manually set your voltages. You have a good HSF and a pretty good mobo so I wouldn't see you having problems getting to 4.0ghz.

Find out how far you can get stable on stock volts before tweaking your other volts. I would imagine with the e0 stepping you would be able to push up to 400mhz (3.6ghz) on stock volts. You might be able to push up past that on stock volts if you are lucky, but you might not be able too.

Also you will want to run prime95 or orthos for at least 8hrs to ensure that your OC is stable. If you dont you might go through some bsod or random crashes.
post #3 of 39
It's not enough to be able to boot into windows and run something real quick. I would say, for testing purposes, running Orthos for 15 minutes is enough, because if it's fairly unstable it'll crash before then. Once it crashes, bring up the voltage a bit and try again. Or, personally I would go the opposite route, and start with a voltage of 1.3625 (the highest recommended voltage for this CPU), see how high of an overclock you can get with that which will still get through 15 minutes of Orthos.

Or you could start that high, and see how low you can get the voltage while maintaining a 4GHz overclock, if that's what your goal is (a very respectable overclock if I do say so myself).

Once you find one that'll last fifteen minutes, see how long it'll last. I say if it lasts a few hours, it's good enough for gaming. The only thing it wouldn't be good for, if it crashed after a few hours, is Folding@Home.
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Missingno.
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post #4 of 39
Quote:
Originally Posted by Biatch View Post
What's wrong, I'd like also go higher than 4.05 GHz, I have ran Super PI successfully. I'm not going to run prime95 2000 hours to make sure that it's stable.

I want all out of this CPU/PC. Just give me some tips, what should I change in BIOS to get fast PC.

You already know what to do to get a stable system. Yet you don't want to do it. Either live with random crashing or run stability test, and raise your voltage.
post #5 of 39
Thread Starter 
I'm not sure about 1.3625V, because it'll makes my CPU very hot, because it's already.

CPU:


I just ran Super PI and max. temperature was 47`C with stock voltages, and now?
post #6 of 39
Well if you stay under 60 degrees under load, it's fine.
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Missingno.
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post #7 of 39
reseat your heatsink. If you are at 47C with stock volts on a noctua-u12 there is something wrong. Either you dont have it seated correctly or you used too much or not enough TIM.

I have my friends e8400 @ 3.6ghz on stock volts using a AC 7 Pro cooler on it and after 6hrs of orthos it didn't load past 46C
post #8 of 39
Thread Starter 
Quote:
You already know what to do to get a stable system. Yet you don't want to do it. Either live with random crashing or run stability test, and raise your voltage.
It's true, but I'm not really sure about the voltages, because I'm also scared about overheating and that for example, my RAM gets damage.

Now, I'm going to do this:

CPU Voltage: 1.25V
RAM timings: 5-5-5-12
FSB:RAM; 1:1
FSB: 455 MHz
Multiplier: x 9.0

Should I set more voltage for DRAM and NB?
post #9 of 39
Thread Starter 
Quote:
Originally Posted by Aawa View Post
reseat your heatsink. If you are at 47C with stock volts on a noctua-u12 there is something wrong. Either you dont have it seated correctly or you used too much or not enough TIM.

I have my friends e8400 @ 3.6ghz on stock volts using a AC 7 Pro cooler on it and after 6hrs of orthos it didn't load past 46C
When I got my PC, I reseated it once after the installation, because when I saw my temperatures in BIOS (was something over 40`C) I was really confused.

I think there's nothing wrong with my heatsink, because I have small case, and only one case fan (90nm, cost 5 euro)... so I think that's the problem for high temperature.

Ai Clock Twister, what's this.. is it good at "stronger" mode?
post #10 of 39
It's not really necessary. You could look up what your RAM is supposed to run at, and set that voltage, but as long as your RAM isn't crashing, it should be fine as is.

One way to test to see if your RAM is unstable, is to underclock your CPU (just turn the multiplier to 6) and run Orthos. If it crashes, it's because of your RAM, and then a Northbridge and RAM voltage increase is in order.

For now, you really only need to tweak the FSB and CPU Voltage.

EDIT: Clock twister is for overclocking your RAM, don't worry about it yet.
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Missingno.
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