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Core 2 Quad Q9400 Overclock

post #1 of 9
Thread Starter 
I purchased a system that had a mild overclock on the Q9400 CPU (to about 3.2 GHz).
Please be aware that I have never done an overclock myself, and really know very little about it, or how to do it.
I was trying to do a software overclock on my GPU using Rivatuner today, and it wasn't working out very well (I assume due to high temps).
After the last crash when trying to overclock, my CPU was greatly underclocked after the restart. Instead of my usual 3.29 GHz overclock, the CPU is clocked at 1.82 GHz (stock is 2.66). The 800 MHz memory is also showing a clock of 457 MHz.
I have no idea how it was set to this, but I also don't know how to fix it. I assume something was reset somehow, and I would like to get it back to how it was. I could use some help.
If you need more info, or need something else from me, please let me know.
Again, I have never done an overclock, so detailed instructions would be nice.
I have an Asus P5Q-e motherboard.



Thanks in advance!
post #2 of 9
http://www.overclock.net/intel-cpus/...-core-2-a.html
post #3 of 9
Thread Starter 
Okay, that info was a bit much for me, as I have never done an overclock before. What I did was reset the options to Auto, take that opportunity to flash my BIOS, then try to do some overclocking.
Here is what I have it at now. I'm not sure that the settings are perfect, but it seems to be running in a stable manner:



The issue I have now is that I am pretty sure this CPU will tolerate a much higher clock. However, I'm a bit unsure about what to do with the memory. This memory is only 800 MHZ, so I set the FSB to 399, so that the memory would be under 800.
How would I best increase the CPU clock speed without increasing the memory past what it can handle? Would I increase the CPU voltage, or is there a different way?
Thanks again.
post #4 of 9
Thread Starter 
No ideas or hints for me?
post #5 of 9
Well you can't overclock FSB and to keep your memory speed untouched..

As memory freq will raise along with FSB and it can't go below 1:1 ratio (example: 400MHz FSB = 800MHz RAM)..

So keep your FSB:RAM @ 1:1 and start overclocking,but if your RAM is not capable of running faster than 800MHz then you will not be able to go higher 400MHz FSB (3.2GHz)..

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
KeyboardPowerCaseMouse
5$ keyboard Cheap stuff Linkworld crappy/modded SmartBox cheap 
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N/A 
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CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
KeyboardPowerCaseMouse
5$ keyboard Cheap stuff Linkworld crappy/modded SmartBox cheap 
Mouse Pad
N/A 
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post #6 of 9
Thread Starter 
Okay, thank you.
post #7 of 9
Thread Starter 
I currently have the system overclocked to 3.2 GHz. I was running it at 3.5, but I was having some memory-based BSODs. I really think I could hit 3.6 or even 3.8 without too much trouble on this proc, but the memory is holding me back.
What would be the best way to achieve a higher overclock? Do I need faster memory to break that 800 MHz threshold, or would raising the DRAM voltage do the trick? Right now, I'm running it at 1.8v.
Thanks for the help guys. I appreciate you helping out someone new to overclocking.
post #8 of 9
Quote:
Originally Posted by Caldrumr View Post
I currently have the system overclocked to 3.2 GHz. I was running it at 3.5, but I was having some memory-based BSODs. I really think I could hit 3.6 or even 3.8 without too much trouble on this proc, but the memory is holding me back.
What would be the best way to achieve a higher overclock? Do I need faster memory to break that 800 MHz threshold, or would raising the DRAM voltage do the trick? Right now, I'm running it at 1.8v.
Thanks for the help guys. I appreciate you helping out someone new to overclocking.
Yeah that P5Q-E mobo would go up to 480Mhz FSB with a C2Quad CPU and be stable in Prime95 Large FFT test,so 3.8GHz is possible..

But you need a faster RAM capable of 1GHz,and 1066Mhz DDR2 would be perfect for you..

Also make sure that your RAM (if you are going to buy it) is on Qualified Vendors List for that P5Q-E,for full compatibility..

You can find QVL on Asus support site..

CHEERS..
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
KeyboardPowerCaseMouse
5$ keyboard Cheap stuff Linkworld crappy/modded SmartBox cheap 
Mouse Pad
N/A 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
KeyboardPowerCaseMouse
5$ keyboard Cheap stuff Linkworld crappy/modded SmartBox cheap 
Mouse Pad
N/A 
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Reply
post #9 of 9
Thread Starter 
Yeah, i thought that was the problem. What a bummer. Maybe I'll upgrade to 1066 later. Makes me wish it had it already. =-/ For now, I think I'll just keep it at 3.2, so it doesn't explode. Haha.
Thanks a lot for the additional info. Overclocking is a lot to learn all at once, but I'm glad I got into it.
Take care!
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