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Overclocking my qx9650

post #1 of 16
Thread Starter 
It's been a while sine I overclocked my qx9650, so I figured what the hell let's do it! So, all I am doing is increasing the multiplier and CPU voltage correct? I have my memory timings set and speed of RAM set to DDR3-1066MHz.

Currently, i'm at 3.66Ghz (333MHz x 11) with voltage set at 1.31V and i keep failing blend test in Prime95 within the first two minutes, or at least one thread fails. Is there something that I am doing wrong, because the max voltage is 1.3625V for my CPU and I am slowly creeping up to that without even going near 4GHz.

Side note:: Is there a way to turn off the downclocking the CPU does when idle in the BIOS? I wasn't sure exactly which option it was in the BIOS and didn't want to touch anything.
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post #2 of 16
Speedstep
post #3 of 16
Check your North Bridge voltage and maybe VTT. You also have to check memory for stability.

I am running 1.26 voltage for 3.6 Ghz.
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post #4 of 16
Thread Starter 
Quote:
Originally Posted by PontiacGTX View Post

Speedstep

I couldn't find the speedstep control for the CPU. All I'm seeing is C1E support and something else. I have the Asus P5E3 Deluxe w/ WIFI-AP@n.
Quote:
Originally Posted by Aparition View Post

Check your North Bridge voltage and maybe VTT. You also have to check memory for stability.
I am running 1.26 voltage for 3.6 Ghz.

VTT is PLL Voltage? Otherwise I'm not seeing a VTT voltage in the BIOS at all.
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post #5 of 16
http://www.overclock.net/t/463886/c1e-support

it seems that C1E makes downclocking
post #6 of 16
Thread Starter 
I have the settings for VTT and NB voltages as AUTO, because I cannot find the defaults. Could someone please advise me as to what the defaults are, as I cannot find them on the interwebs (most of them are sketchy websites). Or maybe even a correct setting that they should be at or a reasonable setting.
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post #7 of 16
Found this on Anandtech of them overclocking the P5E3 Deluxe.
Scroll down to find the voltages they used for 450 FSB
http://www.anandtech.com/show/2381/7

I wouldn't directly use their CPU voltage because that looks pretty high for a Q9xxx tongue.gif
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post #8 of 16
Thread Starter 
Hey sorry i have been away from OCN for a bit.

So is there just a rough estimate of what I should put in that you could give me? I did see that anandtech guide while i was looking for defaults, but like you said I shouldn't go anywhere near that far lol.
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post #9 of 16
You should probably be able to POST at 3.6 @ 1.26V, 3.8 @ 1.28V, 4 @ 1.3-1.35V. Just as a rough estimate. You might need to up the North Bridge voltage to 1.45 when going for 4 if you are having problems.

My cheapo board I can POST at 3.8 @ 1.28V with 1.4 Northbridge. I can't get 4.0 to post on my board, even at 1.45 Voltage frown.gif
I run 24/7 at 3.6 on 1.26 voltage. Which is probably a little high but it is stable and temperatures are good.

VTT I think I have it around 1.3 something...
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post #10 of 16
Thread Starter 
So in terms of voltages, I just want to make sure that I have the right settings so I can do this.

CPU @ 1.26V (Start here)
VTT @ ~1.3V
NB @ ~1.4V
DRAM @ ~1.5V (Whatever My Ram Voltage is)
FSB @ ?

FSB is the only one I do not know.

Then, in terms of overclocking, I simply up the multiplier, make sure for POST, and run Prime95 Blend.

If BSOD, then up which of the voltages? Just the CPU?

I appreciate the help with the voltages! Lot of missing information based on the ever increasing rapid change of technology lol
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Ivy Bridge
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Hard DriveHard DriveHard DriveHard Drive
Samsung 830 SSD 128gb Western Digital Caviar Blue 1TB Western Digital Caviar Black 640GB Western Digital Caviar Green 3TB 
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WD Caviar Black 640GB Intel SSD X25M WD Caviar Black/Blue 1TB LITE ON 24x DVD Writer 
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