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Asus PK5PL (standard) cant overclock past 3.2 Ghz

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December 10, 2009 2:13:53 PM

My mobo wont let me overclock past 3.2 Ghz, it POSTs but then just hangs on a blank screen with a cursor flashing.

CPU is a Core 2 Duo 6750 2.66Ghz stock. Most people are able to overclock these up to 3.6, 3.8 or even 4 Ghz. I have a Scythe mugen 2 cooler.

I think the mobo is basically not designed for overclocking, or that the RAM wont handle it. I can view the vcore voltage at 1.38v +- , but cant change it.

I used Asus update to put the most current BIOS on the mobo.

Anybody have any idea if theres anything I can do short of buying a new motherboard?

Thanks in advance! :D 
a b V Motherboard
a b K Overclocking
December 22, 2009 11:16:02 PM

It's sometimes luck of the draw, I have a q6600 that I could never get past 3.0ghz on my previous mobo. Yet reviews and benchmarks showed people with the same chip and same board got to 3.6ghz very frequently. So I bought a new board, and can OC that same chip to 3.6ghz now. At 3.6ghz my quad core wants 1.375 volts. At my usual settings of 3.2ghz it takes 1.30v.

Did you read the sticky in the Overclocking forum section about how to OC core 2 duos? If you do everything by the book, and it still won't OC, you're chip is a stinker or your board is.
December 23, 2009 1:49:26 AM

Thanks for the reply!

I think its the board. I cannot change the voltage through the BIOS. It wont let me - just doesnt have the feature.

Are there any utilities for increasing voltages through Windows? Heh - I might google that I guess.....

Otherwise I think I'll have to change the board.

I'll check the sticky first, thanks for the tip :D 
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December 25, 2009 4:22:57 AM

Yes I have a ASUS P5kPL-CM mobo and I can't get past 3.0GHZ
What I am running on my new system is Dual core 2.4 overclocked to 2.89GHz (Second Gaming PC)
I have two systems and this is my newest one I build...
But maybe if I have gotten a 3.0GHZ Processor I don't think I would have that issues because I can change the Volt core on the system.
April 5, 2010 1:14:14 AM

Same problem here on my asus P5K, just won't let me go over any busspeed above 400. Everything Above = Fail...
a b V Motherboard
a b K Overclocking
April 5, 2010 2:00:13 AM

Odan said:
Same problem here on my asus P5K, just won't let me go over any busspeed above 400. Everything Above = Fail...



EDIT: Just noticed ODAN was posting to a 4 month old thread, OH WELL :pt1cable: 
a b V Motherboard
a b K Overclocking
April 6, 2010 2:46:49 AM

odan, is your memory set to run at the slowest speed supported by the mobo?
April 6, 2010 11:38:59 PM

it is running in a 1:1 ratio
a b V Motherboard
a b K Overclocking
April 8, 2010 5:58:37 AM

Raise the memory timings. Also, if your timings include command rate for mem, set it to 2T instead of auto or 1T. What voltage are you running? Also, have you raised the other board voltages? I think its GMCH and the other one...
April 9, 2010 7:00:37 PM

my timing are now 5 - 5 - 5 - 15
so you suggest making them 6 - 6 - 6 -18?

I'll look into the voltages.. have them on auto now :) 
a b V Motherboard
a b K Overclocking
April 12, 2010 2:04:18 AM

I would guess the voltages would be more important, its more like brute forcing the settings. But you could try the ram timings first to see if it helps before the voltages.

Auto voltages in some cases just pick a specific voltage. Hardly "auto" huh? At least the auto setting works on stock speeds, which is the intention.
!