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Q6600 G0 Voltage Questions

post #1 of 14
Thread Starter 
I just finished installing my watercooling setup and it is working great. I am overclocking my Q6600 with an XFX 790i Ultra. It is currently stable for ~4 hours of Prime95 at 3,691 Mhz. The temps are great, they are as follows:
idle: all cores roughly 30 degrees
Load: all cores around 50 degrees

Here is my question though. I do not expect too much life out of my Q6600, if it works for a year that is great. In the BIOS my vCore is set to 1.5375, but CPU-Z says it is only 1.448. I have been told not to go over 1.55V with a Q6600. Does that mean that I should not set my BIOS above 1.55V or should i make sure that CPU-Z doesn't show 1.55V (thus allowing a higher setting in the BIOS)

I was thinking this chip would be hotter at that voltage but it seems that my limiting factor will be Volts, not temps.
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post #2 of 14
its 1.55v in bios. programs such as cpuz will show fluctuating voltages under idle and load so go with bios because it is 100% correct.
    
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post #3 of 14
Thread Starter 
thanks for the response. So do not go over 1.55V in the BIOS. At that voltage how long can I expect my chip to last?
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post #4 of 14
that is a killer temps
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post #5 of 14
why would you want to push your chip that hard? get your multi down to 8x or so and see what it can do. more fsb = more memory bandwidth
    
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post #6 of 14
Thread Starter 
OK, I will try to get the voltage down. I am still new to overclocking as this is my first build. I am going to drop the multiplier to 8X and up the FSB and see if I can get a better OC.

As for the watercooling and temps. I am using a GT Stealth, Laing D5 Vario, D-Tek Fuzion V2 all mounted inside of a CM-690 with a total of 7 90+ CFM fans. It stays pretty cool.

Look for a thread on it in the watercooling section soon. I am looking to sell some used DDR3 soon, So if you like my setup, please rep me. ( not sure if it is against the rules to asks for reps, if it is please do not rep me based on my comment.)
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post #7 of 14
Quote:
Originally Posted by crazy1323 View Post
s

Here is my question though. I do not expect too much life out of my Q6600, if it works for a year that is great. In the BIOS my vCore is set to 1.5375, but CPU-Z says it is only 1.448. I have been told not to go over 1.55V with a Q6600. Does that mean that I should not set my BIOS above 1.55V or should i make sure that CPU-Z doesn't show 1.55V (thus allowing a higher setting in the BIOS)
I don't know your Board, but with the Newer DFI boards, there is a setting in the Bios to control VDroop, so that you don't need to raise the VCore so high in the Bios. For example I set mine to 1.3625v Bios and it shows in CPUz as 1.36v.

Have a look in your Manual for a setting.
    
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post #8 of 14
Thread Starter 
awesome. I will look for the setting. That is a pretty big voltage drop.
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Q6600 XFX nVidia 790i 8800GT X2 (SLI) 4 GB DDR3 1800 Mhz 
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CPUMotherboardGraphicsRAM
Q6600 XFX nVidia 790i 8800GT X2 (SLI) 4 GB DDR3 1800 Mhz 
Hard DriveOSMonitorKeyboard
2X 15K 147gb SAS (RAID0) Vista Ultimate 64-bit Dual Asus 22" Logitech DiNovo Edge 
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post #9 of 14
You can keep your voltage low and have PENCIL mod, on your motherboard, instead of having 1.54volt on bios and 1.45 on desktop, you can have 1.49 on bios, and 1.48 on desktop..

It's the vdroop that suck the living voltage from feeding your processor

*EDIT* Btw, nice temp. im getting 35-40 for core 0,1 31 for core 3,4 ; i guess i need to add reseat my heatsink
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post #10 of 14
Thread Starter 
Quote:
Originally Posted by xtacized View Post
You can keep your voltage low and have PENCIL mod, on your motherboard, instead of having 1.54volt on bios and 1.45 on desktop, you can have 1.49 on bios, and 1.48 on desktop..

It's the vdroop that suck the living voltage from feeding your processor

*EDIT* Btw, nice temp. im getting 35-40 for core 0,1 31 for core 3,4 ; i guess i need to add reseat my heatsink

Any links to a pencil mod for a 790i Ultra. I would really like to get my CPU to 3.8 Ghz (personal milestone) I am currently at 3.6 Ghz with a FSB of 1800 and a multiplier of 8. It is perfectly stable with the BIOS Vcore at 1.45V
First Build
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CPUMotherboardGraphicsRAM
Q6600 XFX nVidia 790i 8800GT X2 (SLI) 4 GB DDR3 1800 Mhz 
Hard DriveOSMonitorKeyboard
2X 15K 147gb SAS (RAID0) Vista Ultimate 64-bit Dual Asus 22" Logitech DiNovo Edge 
PowerCaseMouseMouse Pad
OCZ 750W Water Coming Soon Logitech MX Revolution Ice Mat 
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First Build
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CPUMotherboardGraphicsRAM
Q6600 XFX nVidia 790i 8800GT X2 (SLI) 4 GB DDR3 1800 Mhz 
Hard DriveOSMonitorKeyboard
2X 15K 147gb SAS (RAID0) Vista Ultimate 64-bit Dual Asus 22" Logitech DiNovo Edge 
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