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Safe voltage for Q9450?

post #1 of 39
Thread Starter 
Just got my new stuff setup, running a Q9450 and I want to OC it. Instantly set my voltage to max stock which is 1.3625V and pushed it to 3.2GHz for 2 hours, seems stable enough so my processor is working perfectly. I decided to push it all the way up to 3.6GHz and incrementally increase voltages, just got to 1.38125V and the time before a core drops an error is becoming longer so I assume it's very close to hitting the 3.6 sweet spot.

I am aiming for a 24/7 stable OC, so I would like to know what the max safe voltage I should be using on this processor as I want to keep pushing it to see if I can get 4.0GHz stable and what it takes, ultimately I will settle for whatever I can get away with 24/7.

Also, what temp should I keep my cores under @ full load?
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post #2 of 39
I believe the max VCore is around 1.4 Volts and load temps I would keep under 65C
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post #3 of 39
Thread Starter 
Quote:
Originally Posted by coltsrock View Post
I would keep under 65C
You are referring to the true measurements of Real Temp, or the +10C measurements in Core Temp?
Edited by civilr - 7/2/08 at 9:18pm
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post #4 of 39
The true measurements of real temp
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post #5 of 39
I think Q9450 running @ 3,2Ghz using 1,3625v is too high....have you ever try using default vcore at that clock?

Because I have seen a lot of Q9450/X3350 user reach 3,4 ghz Only with default vcore.
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post #6 of 39
Fireedo, that meens you raise only the FSB to 400 and everything else leave it on AUTO? Whats with RAM? Also on auto at this raise of FSB? I own to an Q9450, but no overclock has been done on it because I'm waitning after my new Mobo..
    
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post #7 of 39
yup, you can leave everything on Auto, but if you want to set up manually set at the lowest Vcore and adjust Dram Voltage depend on the FSB.

But after seeing your system spec you can set everything on Auto and just raise the FSB to 400 (if you want reach 3,2 ghz)...also try set your FSB to 425 hope that your Q9450 still can handle that stable without raising vcore
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post #8 of 39
Thread Starter 
Quote:
Originally Posted by fireedo View Post
I think Q9450 running @ 3,2Ghz using 1,3625v is too high....have you ever try using default vcore at that clock?

Because I have seen a lot of Q9450/X3350 user reach 3,4 ghz Only with default vcore.
Thanks for the info fireedo. I know it is kinda high but 1.3625V is a stock voltage for this processor (0.8V - 1.3625V) and the goal is not to run 3.2GHz or 3.4GHz but rather 3.6GHz 24/7 at least. I only started at 1.3625 and went straight to 3.2GHz just to see if my processor was stable because I didn't want to tinker with voltages and from there i jumped straight to 3.6GHz and have been incrementally increasing vcore to get it stable.

Right now I have got 3.6GHz @ 1.4v almost stable (core 1 failed @ 1 hour 25 mins while the 3 others have been going for about 8 hours now). I think a slight increase just above 1.4v will ease out core 1 and let me run this 24/7. My temps:



BTW. I am using my RAM @ stock which is 1.9v 1600MHz so the divider is something like 9:17 FSB : DRAM. Hopefully once I get this stable at 450FSB I can push the RAM up to 1800MHz which I don't think should be a problem for 1:2.
Edited by civilr - 7/3/08 at 6:16am
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post #9 of 39
Easy on the voltage, I'm at a summer clock of 3.87GHz @ 1.32vCore
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post #10 of 39
Thread Starter 
Quote:
Originally Posted by rpm666 View Post
Easy on the voltage, I'm at a summer clock of 3.87GHz @ 1.32vCore
Hmmm, it seems to get better as I provide it with more voltage. I may turn it down a bit and start incrementally going down to see if it gets any better. Thanks for the info.
Second System
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Q9450 @ 3.6GHz 24/7 EVGA 790i Ultra EVGA 9800 GTX+ 2x2GB G.Skill DDR3 @ 1.8GHz 
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Second System
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CPUMotherboardGraphicsRAM
Q9450 @ 3.6GHz 24/7 EVGA 790i Ultra EVGA 9800 GTX+ 2x2GB G.Skill DDR3 @ 1.8GHz 
Hard DriveOSMonitorKeyboard
2x36GB WD Raptors RAID0 Vista Ultimate x64 SyncMaster 245BW G15 
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