QUOTE(Darksorrow3010 @ Jan 11 2010, 08:16 PM)
hi, Rampage Formula user here.
im new in OC. i've tried Crazy settings in AI Tweaker. it overclocks my E8400 from 3.0ghz to 3.52ghz.
the I tested it prime95. unfortunately that overclock is not stable.
well i dunno what's the problem. is there any BIOS settings to share with me in order to OC up to 3.6Ghz and above? i dunno what cpu voltages, NB n SB voltages...argh watver should i set. i am very noob in this field.
my spec:
proc: E8400
mobo : x48 rampage formula
cpu cooler: Prolimatech megahalems
RAM: 4gb Kingston DDR2 1066Mhz 5-5-5-15
BIOS: 0210 (stock)
E8400 can easily be OC'ed to 4ghz.
But first let's try to stabilize @3.6ghz, that's 400FSB X 8 (multipliers).
First, what was your Vcore when you OC it at 3.52ghz? By any chance you leave the Vcore on AUTO settings right?
Don't bother about NB and SB voltage yet, they are for maximum tweaking when you've reach 4ghz+. So rule them out first, to stabilize OC, you only need to primarily focus on the Vcore.
DOWNLOAD and install RealTemps before attempting any OC'ing:
http://www.techpowerup.com/realtemp/You'll need this to monitor the CPU temps. (THIS IS NEVER TO BE TAKEN LIGHTLY)
Bro, first set your settings below, this is a basic starting point for Ai Tweaking ASUS board for 3.6Ghz:
» Click to show Spoiler - click again to hide... «
FSB frequency: 400
Multiplier: 8
PCIE Frequency: 100
FSB to NB strap: 333
Dram frequency: 1067hmz (automatically it sets to 1067mhz, but its better to set this manually)
CPU Voltage: READ THE REST OF MY POST!
FSB termination voltage: leave it to auto for now
DRAM voltage: leave it to auto for now
NB voltage: set manually to default settings.
SB voltage: set manually to default settings.
PCIE Sata Voltage: AUTO
Load-line calibration: Enabled. (because it's recommended for 45nm chips like the E8400)
CPU Spread Spectrum: Disabled (disabled to enhanced CPU overclocking ability)
PCIE spread spectrum: Disabled (disabled to enhanced PCIE overclocking ability)
CPU Clock Skew: AUTO
NB Clock Skew: AUTO
CPU MArgin Enhancement: Performance Mode
As you can see, I didn't included the Vcore yet,because every proc is uniquely different to one another. Once you set those settings aforementioned above, let's play with the CPU voltage
First rule of OC'ing a 45nm chip is to not exceed more than 1.3625v, so there's two ways of methodology of doing this:
1) To start from 1.35v and running OCCT or Prime95 while going
down an increment at a time until you will reach the
most lowest stable Vcore.
2) To start from 1.28v and running OCCT or Prime95 while going
up an increment at a time until you will reach the
most stable Vcore.
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IMPORTANT NOTES:For method (2), if you get it stable from the get-go @ 1.28v, you should run the stress test while going
down an increment at a time until you will reach the
most lowest stable Vcore.
Why? Simple logic, if you can stabilize it @ 1.28v, why go up since your primary goals is to find the lowest stable Vcore for OC, as far as 3.6ghz is concerned.
For method (1), if you couldn't get it stable for the get-go @ 1.35v, the only way is upping the increment one at a time. NEVER go more than 1.4v,
stabilizing 3.6ghz doesn't require that much voltage to start with, but just in case if you do happened to reach that point.
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~And why you ask 3.6ghz?3.6ghz is considered moderate OC'ing for the E8400, very good frequency to first learn how to start OC.
~Ai Clock Twister, Ai Transaction Booster, NB & SB voltage, PLL voltage, FSB termination voltage, CPU GTL ref,etc.? These are the 'Second' and 'Third' Phases of OC'ing, now you are working out the
'First Phase', that is to find the stable Vcore at any given CPU frequency. (3.6ghz for now, no more than that)
So you'll be playing around with those aforementioned settings when you'vee mastered the art of stabilizing the the CPU ferquency. (ghz)
As for now, totally ignore those settings, or else information overload will get you nowhere.
OK bro, find a whole day free and get cracking!
i) Before you start, install Realtemps and memorize the CPU LOAD's highest temps.(RUN prime95 for couple of minutes to acquire the highest LOAD temp.)
When running prime95, safe load temps is around 55c ~ 65c.
When you've done that, lets proceed to the next step.
ii)Select one of the two methods I provided above, (1) is quicker, (2) is conventional.
When running stress test on 3.6ghz, YOUR EYES MUST FOCUS ON REALTEMP FIRST to see if it reaches up to 70c..which is unrecommended.
For method (1): Let prime95 run minimum 3 hours, if stable then move the Vcore
downwards by increment until you encounter errors, then
up by an increment and run prime95 for more than 6 hours this time.
For method (2) Let prime95 run minimum 3 hours, if unstable then move the Vcore
upwards by increment until you don't encounter errors, then run prime95 for more than 6 hours this time.
iii)When you have pin point the lowest stable voltage for 3.6ghz, run prime95 for as long as you possibly can (8-10 hours is more than enough, but longer is recommended)
This is for the final validation that the OC is perfect and successful.
Alright bro, I hope a appreciate this basic schooling in
Overclocking: Chapter 1 - CPU StabilizationRead my post thoroughly ya
This post has been edited by JoBigShow: Jan 12 2010, 02:35 PM 
Jan 11 2010, 08:16 PM
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