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OCing Q6600 for the 1st time. Have questions

post #1 of 18
Thread Starter 
My System:
Q6600 Revision G0
8 GB DDR3 1333 G.Skill Ram
MSI P43-C51 mobo
750w PC Power PSU
XIGMATEK HDT-S1283 120mm
NVIDIA GeForce 8800GT

I'm new to overclocking and have read the Core 2 OC Guide. On my first try I don't want to do anything too drastic, so my goal is 3.0GHz. If I've understood the Tom's Core 2 OC article, all I have to do is raise the FSB to 333 with the 9 multiplyer to give me 3.0GHz? Now with my RAM at 1333, I can't increase my speed farther without adding voltage right? I was unclear on what to do with the memory, so I will have to reboot and check out my bios for questions regarding the RAM. I was also concerned about my PCI Clock Synchronization. It says to set to 33.33 MHz, but its not an option in my bios. The PCI Express Frequency is already set to 100, and I know I need to turn off Spread Spectrum. Do I seem to be missing anything? Am I over worrying?

Out of curiousity, what kind of life span should I expect with a well cooled moderately OCed cpu?

I'm sure I will have more questions to follow. I'm still in the learning stage. Thanks all.
post #2 of 18
I'm not familiar with DDR3 socket 775 boards, but there should be a RAM multiplier that can drop it.

First thing to do on a P43 is to drop your CPU multiple, drop RAM multiple and see what FSB your board starts to fail at. Then play with NB voltage to see if it can improve.

That way you'll know where you stand with your mobo before trying to bump your CPU. I don't think P43s are very good overclockers compared to P35, P65.
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post #3 of 18
Quote:
Originally Posted by TDF View Post
My System:
Q6600 Revision G0
8 GB DDR3 1333 G.Skill Ram
MSI P43-C51 mobo
750w PC Power PSU
XIGMATEK HDT-S1283 120mm
NVIDIA GeForce 8800GT

I'm new to overclocking and have read the Core 2 OC Guide. On my first try I don't want to do anything too drastic, so my goal is 3.0GHz. If I've understood the Tom's Core 2 OC article, all I have to do is raise the FSB to 333 with the 9 multiplyer to give me 3.0GHz? Now with my RAM at 1333, I can't increase my speed farther without adding voltage right? I was unclear on what to do with the memory, so I will have to reboot and check out my bios for questions regarding the RAM. I was also concerned about my PCI Clock Synchronization. It says to set to 33.33 MHz, but its not an option in my bios. The PCI Express Frequency is already set to 100, and I know I need to turn off Spread Spectrum. Do I seem to be missing anything? Am I over worrying?

Out of curiousity, what kind of life span should I expect with a well cooled moderately OCed cpu?

I'm sure I will have more questions to follow. I'm still in the learning stage. Thanks all.
With a good aircooler and a good motherboard some of those Q6600 G0's can go up to 3.6GHz.

Looks like you have an OK cooler. However, I would take it easy with that MSI motherboard and Quad Core overclocking. MSI motherboards almost always have a very weak Voltage regulation Circuit for the CPU. I looked at a couple of pictures of that MSI board, and as I feared it has only 3-Phase power. Do not go too high on the V-core. I would say 1.3v Vcore on full load (Talking about full load Volts, not what you see in bios or in idle) is absolute max for that board and 65nm Quad if you want your board not to burn.

Read about several people burning their MSI boards when overclocking. So even at 1.3v Vcore full load you are not safe with that board.

MSI boards is junk in my opinion.

For 3.6GHz on that Q6600 people often need 1.45 - 1.5v + Vcore on air.
    
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post #4 of 18
Thread Starter 
Quote:
Originally Posted by 2thAche View Post
I'm not familiar with DDR3 socket 775 boards, but there should be a RAM multiplier that can drop it.

First thing to do on a P43 is to drop your CPU multiple, drop RAM multiple and see what FSB your board starts to fail at. Then play with NB voltage to see if it can improve.

That way you'll know where you stand with your mobo before trying to bump your CPU. I don't think P43s are very good overclockers compared to P35, P65.

I'm using DDR3 1333 so wouldn't my max FSB be 333? I understand what you're saying, and think its a good idea. You're saying test the limits of the chip before overclocking the cpu right? As I understand things (go ahead, laugh), If I exceed what speed my RAM is capable of, couldn't I get instability due to the RAM? At this stage, I would be happy with 3.0GHz. I am hesitant to mess with volatages at this point except to lower them to reduce heat. Thanks again.
post #5 of 18
Just set your fsb to 333 with 9 x multiplier and you are good to go

It will work with stock voltage.
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Fatal1ty
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post #6 of 18
Quote:
Originally Posted by TDF View Post
I'm using DDR3 1333 so wouldn't my max FSB be 333? I understand what you're saying, and think its a good idea. You're saying test the limits of the chip before overclocking the cpu right? As I understand things (go ahead, laugh), If I exceed what speed my RAM is capable of, couldn't I get instability due to the RAM? At this stage, I would be happy with 3.0GHz. I am hesitant to mess with volatages at this point except to lower them to reduce heat. Thanks again.
It's possible to overclock RAM, but it's a long process and alot of guesswork.

There should be a RAM multiplier setting in your BIOS that will allow you to downclock your RAM before you start raising FSB.
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by 2thAche View Post
It's possible to overclock RAM, but it's a long process and alot of guesswork.

There should be a RAM multiplier setting in your BIOS that will allow you to downclock your RAM before you start raising FSB.

Are you saying to use a 1:1 ratio as opposed to say a 1:2, or by downclocking RAM you mean something else?
post #8 of 18
Thread Starter 
Another question: my board has a hardware OC feature. One of the settings is FSB 266-333MHz. In BIOS you don't select a range in frequency, so if you were to input 333MHz, is 333 the max FSB speed it will run or the only speed it will run? It seems like using the jumpers on the board to OC might be more power efficient. Is that why a range of frequencies are given? Thanks again.
post #9 of 18
You don't need to downclock your ram unless your planning on running your CPU @3+Ghz,
For 3.6 you would need to d/c to 800Mhz, so it will run using 1:1 ratio with your fsb at 400Mhz.
(you have to divide by 2 though cos the ram is dual channel)

So for 3.6Ghz O/C you would need
fsb: 400Mhz (or 1600Mhz, cos you always multiply by 4 for quad core)
RAM:400Mhz
Multi: x9, so 400Mhz x 9 = 3.6Ghz;
VCore = 1.4 - 1.5v

Also your ability to remain stable @ 3.6 going to depend on your VID, I wouldn't risk going to 3.6 if you have a 1.312 VID, I just can't get mine stable @ 1.5V and once you get into 1.4 - 1.5 it reduces the lifespan of the CPU and going above 1.5V is a big no - no, because you can burn your CPU.
Edited by Heret|c - 2/28/11 at 1:31pm
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post #10 of 18
It sounds like he's starting with the multiple putting him at 1333.
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CPUMotherboardGraphicsGraphics
i7 3930K @ 4.8Ghz offset ASrock X79 Extreme6/GB EVGA GTX680 FTW with EK waterblock EVGA GTX650 for PhysX 
RAMHard DriveHard DriveHard Drive
G-Skill 4x4GB DDR3 1866 8-9-9-24@1.5V Samsung 840 Pro 128GB Agility 3 240GB x2 RAID 0 WD 500GB X2 RAID 0 
CoolingCoolingCoolingCooling
XSPC Raystorm XSPC Dual Bay reservoir with Alphacool variable... Alphacool NexXxoS UT60 Full Copper Triple 120mm... EK GTX680 FTW waterblock 
OSMonitorPowerCase
Windows 7 64 bit Ultimate HP tSS-25X11LED 25" 1080p PC Power&Cooling Silentpower 910W Xigmatek Elysium 
MouseMouse PadAudioAudio
Razer Deathadder 3500 Rocketfish Creative Sound Core3D Logitech Z5300 
CPUMotherboardGraphicsRAM
960T unlocked to X6 ASUS M4A79XTD Evo Sapphire HD6870 1GB 2x2GB Ripjaws 7-8-7-24 F3-12800CL7D-4GBRM  
Hard DriveHard DriveOptical DriveCooling
Crucial M4 128GB WD 320GB HDD Lite-On DVD-RW Corsair H100 
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Win 7 x64 Ultimate OCZ Stealthstream 600W HAF XB 
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