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Help with Asus P5K3 Deluxe + Q9650

post #1 of 9
Thread Starter 
Hi, I've lurked here for years but just now posting. It's been years since I've OCd anything, and I'm not having any luck at the moment. To give you an idea, the last OC I did was on a 3.2GHz Pentium 4...

Anyway, I have a Asus P5K3 Deluxe and a Q9650 CPU. I just got a Radeon 5850 to replace my 9800GTX+, so now I'd like to OC my CPU to try and maximize the performance of this rig. I used the Asus Jumperfree OC deal to try and OC it 10, 15, and 20%, but the PC will not boot with any of them. I see people running 4+GHz on this CPU, so I know it's capable of it. I think the jumperfree auto OC thing just sucks. Problem is that it's been so long I can't remember how to OC anything manually. Do any of you guys have some advice? I've been googling like a madman but have had no luck.

If you need more information (options in the BIOS and such) I'll gladly do my best to provide it.

Thanks.
post #2 of 9
Set the multiplier to 9 and raise the FSB in small increments. Test for stability each time, once it's unstable, raise the vcore by small increments. Rinse and repeat, until you've reached you're heat/voltage limit. It's of course a bit more complex than this, but that the basics.
post #3 of 9
What voltages are you running your CPU at? Did you lock the PCIE at 100? Did you disable the power-saving mode? (P1E I think?). Did you try increasing your northbridge voltage if running high FSB?
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post #4 of 9
Thread Starter 
@smykster Thanks, I'll try that!

@DeltaUpsilon I haven't done anything to anything. I tried the jumperfree thing, when that didn't work I set everything back to auto and just came here.
post #5 of 9
Quote:
Originally Posted by 47_MasoN_47 View Post
@smykster Thanks, I'll try that!

@DeltaUpsilon I haven't done anything to anything. I tried the jumperfree thing, when that didn't work I set everything back to auto and just came here.
Ah, okay. I have a P5K so the BIOS should be pretty similar. I'll take a couple of screen shots of my BIOS and that should help you get started on the OC.
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post #6 of 9
delta will help you with the bios but

this is a very basic explanation of overclocking

its basic maths. your Q9650 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 GHz

boot into bios
unlink your ram, this means keep it at stock speed eg. 667mhz. 800mhz etc...., doing this means that the ram does not interfere with the cpu overclock

can you raise the fsb? yours is now 333. 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 4 (for 4 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)
at final overclock spped, run IBT for 50 passes


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.
your cpu is fine upto 1.36v

the trick is to do this step by step, 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.
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post #7 of 9
So, here are some shots of my BIOS. You can use these as a reference, but remember to start small and make sure you've got adequate cooling/airflow to support the extra heat. I've got both my CPU and northbridge on my watercooling loop to allow for the higher voltages.





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post #8 of 9
how do unlink the RAM from the fsb?
post #9 of 9
why does windows list it as 2.39Ghz when the gigabyte allows windows to show the real overclock?

Its definitely overclocked coz the heat is up and the fan speed increase. Windows Experience index only shows 7.2 for the Q6600 when it was 7.3 for the gigabyte. And everything is AUTO set from the mobo...

Advice please
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