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Need help regarding overclocking cpu

post #1 of 5
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Hello guys i am a newbie in overclocking world and needs your assistance. i am using intel core 2 quad Q8400 cpu on MSI p45 NEO3 motherboard. RAM is corsair 3 Gbs 800 bus with ati HD 4670 Graphic card. i want my cpu overclocked from 2.66 to atleast 3.00 Ghz but i even dont know how to get started. i hope some one of you will assist me.

thank you
post #2 of 5
Moving to appropriate section.
Megadoomer
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Megadoomer
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post #3 of 5
Well here is what you have to do:

Go into BIOS, increase FSB, some things that are taken for granted,
- you have good Power Supply
- you have good cooling in your system, after market cooling solutions are recommended since you are using a Quad

After increasing FSB, check with tools like LinX, OCT, IntelBurnTest to check for stability
- Start with lower multiplier, this can be skipped
- Once you are unable to push more you can try by increasing he vCore


Hope it helps - Keep an eye on your temps and dont let them get too high.

You can also add your system in your siganature here on OCN so other users can see what hardware you have.

Good luck and welcome to OCN
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post #4 of 5
this is a very basic explanation of overclocking

its basic maths. your e8400 is rated at 1333mhz. you always divide this number by 4 so 1333/4= 333, this is your fsb. (or cpu frequency)
then your processor (cpu) has a multiplier of 9 (or cpu ratio)
so 333 x 9 = 2997mhz or 3.0GHz

boot into bios.
can you raise the fsb? yours is now 333. (333 x 9 = 2997mb or 3.0ghz ) try rising it to 350
boot into windows
download realtemp and coretemp (google them)
install and run them
then download intel burn test (ibt) and run it.
have a look in task manager and notice how much free ram is listed.

in ibt set threads to 2 (for 2 cores) and then click on custom ram and enter an amount just below the free amount.
eg. i have 2520mb free ram. so i enter 2500 into the custom ram.
run the test for 5 passes.
keep an eye on temps (do not let it go over 65.c)

if test runs fine, go back into bios, and change frequency (fsb) to 370 and repeat the tests.
keep doing this in 20mhz steps until windows will not boot. then just go back a step (remove 20 from the fsb) to the last stable frequency,
or
just raise the cpu voltage a couple of levels. it should now boot.
its a balancing act, higher voltages will get you higher fsb, but it will also give you higher temps.
also if you have more than 2 sticks of ram, you will have to raise the NB (northbridge, may say mch) voltage a couple of levels

THE MAX TEMP FOR A E8400 IS 72.C.
TRY TO KEEP IT BELOW 60.C FOR 24HR USE

also at final speed, run 20 passes of IBT and then run prime95 blend test overnight (8-12hrs)

the trick is to do this step by step, and not go straight to eg. 400 (400 x 9= 3.6ghz), just take your time

get the cpu maxed before increasing the ram speed

also if going down this route, please get a proper cpu cooler.
Edited by j.col - 5/8/11 at 12:34pm
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post #5 of 5
I'm not familiar with your board, but Q8xxx doesn't like to budge on many boards. Read up on general overclocking, then post back when you run into specific probs.
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SFF: HADRON
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XSPC Raystorm XSPC Dual Bay reservoir with Alphacool variable... Alphacool NexXxoS UT60 Full Copper Triple 120mm... EK GTX680 FTW waterblock 
OSMonitorPowerCase
Windows 7 64 bit Ultimate HP tSS-25X11LED 25" 1080p PC Power&Cooling Silentpower 910W Xigmatek Elysium 
MouseMouse PadAudioAudio
Razer Deathadder 3500 Rocketfish Creative Sound Core3D Logitech Z5300 
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960T unlocked to X6 ASUS M4A79XTD Evo Sapphire HD6870 1GB 2x2GB Ripjaws 7-8-7-24 F3-12800CL7D-4GBRM  
Hard DriveHard DriveOptical DriveCooling
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