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Rookie Overclocking Q6600

post #1 of 10
Thread Starter 
So I decided that I'd try to get a little more life out of my CPU before upgrading, and overclocking was the only logical choice! Having never done it before, I read up on what I could and got my Q6600 G0 on an Intel D975XBX2 to 3.0ghz without having to change anything other than the FSB. Ran a stress test overnight, and everything looked good-to-go.

My new RAM shows up the next day, and after installing it I'm unable to boot unless I set everything back to the default BIOS settings. I ordered the same RAM, but it appears that over the past couple of years timings might have changed slightly. The old appears to be 6-6-6-16 while the new is 6-6-6-18 (both DDR2 800). I went from 2x2gb (running fine at 3.0ghz) to 4x2gb (only works around stock settings).

I'm able to get it to 2.5ghz now without adjusting anything other than the FSB, but beyond that everything seems to fall apart. The RAM seems to only work when I leave the reference frequency at auto and speed at 800mhz. I've been trying to adjust that down for the overclock, but every other setting causes my computer to not boot - can't even reach BIOS. At that point I'll have to set the BIOS to maintenance mode to get settings right to boot at all.

On the other hand, when I leave the memory at auto and try to increase the FSB and voltages, I'll typically get to the Starting Windows screen, where then the system reboots itself. This will essentially happen in a loop, where I get the option to repair windows or start normally.

Does anyone have advice on what I should try? Considering ordering 2 more replacement sticks to match the new ones exactly, as the RAM compatibility seems like it might be the problem. Beyond that I'm not too sure what to do - any help would be greatly appreciated!
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post #2 of 10
Quote:
Originally Posted by ozMoeSyz View Post

So I decided that I'd try to get a little more life out of my CPU before upgrading, and overclocking was the only logical choice! Having never done it before, I read up on what I could and got my Q6600 G0 on an Intel D975XBX2 to 3.0ghz without having to change anything other than the FSB. Ran a stress test overnight, and everything looked good-to-go.
My new RAM shows up the next day, and after installing it I'm unable to boot unless I set everything back to the default BIOS settings. I ordered the same RAM, but it appears that over the past couple of years timings might have changed slightly. The old appears to be 6-6-6-16 while the new is 6-6-6-18 (both DDR2 800). I went from 2x2gb (running fine at 3.0ghz) to 4x2gb (only works around stock settings).
I'm able to get it to 2.5ghz now without adjusting anything other than the FSB, but beyond that everything seems to fall apart. The RAM seems to only work when I leave the reference frequency at auto and speed at 800mhz. I've been trying to adjust that down for the overclock, but every other setting causes my computer to not boot - can't even reach BIOS. At that point I'll have to set the BIOS to maintenance mode to get settings right to boot at all.
On the other hand, when I leave the memory at auto and try to increase the FSB and voltages, I'll typically get to the Starting Windows screen, where then the system reboots itself. This will essentially happen in a loop, where I get the option to repair windows or start normally.
Does anyone have advice on what I should try? Considering ordering 2 more replacement sticks to match the new ones exactly, as the RAM compatibility seems like it might be the problem. Beyond that I'm not too sure what to do - any help would be greatly appreciated!

4 sticks of RAM of overclocking might be a problem.

If you can, just leave the RAM at stock settings, don't try to run it 1:1 with the FSB.
also, try the OC with only 2 sticks of RAM, first.


timings :
there is nothibng worng them
make sure you run the ram at 2T , not 1T

also, just increase FSB and vcore a bit, and test......
you might want to overcolt a bit in the beggining to make things easier, just keeping in mind tht you will try to lower volts afterwards
post #3 of 10
have u tried raising the voltage? What voltage are you on now?
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post #4 of 10
Thread Starter 
Thanks for the responses! I can get it running okay with just 2 sticks of RAM on the OC - the problem only seems to show up when I add the extra two. Didn't know that would cause instability - is there any way around that?

As for changing T1 to T2 - I'm not seeing that option in my BIOS. Even when I open up CPU-Z, under both memory and SPD the command rates are non-existent. Could that setting maybe be hidden somewhere?

Right now all of the voltages are at stock, and things run fine not overclocked. However even when I try to go up to 2.5ghz I get stability issues.

Core Voltage: 1.242 CPU-Z, Default in BIOS
FSB Override: 1.25
MCH/ICH Override: 1.525
Memory: 1.84

Any suggestions on what steps to take to slowly OC? I've tried increasing the core voltage with the FSB speed, but that pretty much causes instant instability. I've also tried increasing voltages across the board, figuring I can then dial them back down, but that's not working either.
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post #5 of 10
Quote:
Originally Posted by ozMoeSyz View Post

Thanks for the responses! I can get it running okay with just 2 sticks of RAM on the OC - the problem only seems to show up when I add the extra two. Didn't know that would cause instability - is there any way around that?
As for changing T1 to T2 - I'm not seeing that option in my BIOS. Even when I open up CPU-Z, under both memory and SPD the command rates are non-existent. Could that setting maybe be hidden somewhere?
Right now all of the voltages are at stock, and things run fine not overclocked. However even when I try to go up to 2.5ghz I get stability issues.
Core Voltage: 1.242 CPU-Z, Default in BIOS
FSB Override: 1.25
MCH/ICH Override: 1.525
Memory: 1.84
Any suggestions on what steps to take to slowly OC? I've tried increasing the core voltage with the FSB speed, but that pretty much causes instant instability. I've also tried increasing voltages across the board, figuring I can then dial them back down, but that's not working either.

for the 4 sticks, try raising RAM volts a bit.
vcore should be raised as well.
there are other values that are important like FSBTV but it all depends on your bios and mobo capabilities.
post #6 of 10
Thread Starter 
So I got it working and stable at 3.0ghz by doing the following:

- All stock settings (Default Vcore, 1.25 FSB, 1.525 MCH/ICH)
- Raised FSB to 333
- Memory set to 266/533 with voltage lowered to 1.8, timings at 4-4-4-12

The main issue seems to be with my memory timings. I've been unable to get the system to even boot at anything other than 266/533 and 4-4-4-12 with the 4 sticks of RAM. The auto settings work fine, but the second I put them to manual everything seems to fall apart without using those. This is even without touching the processor settings at all.

I think I'm pretty content with this setup, but if anyone has suggestions for getting to 3.2ghz with the setup, I'd be happy to give them a shot! What do you think the max safe voltage would be for the 1.8v RAM?
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post #7 of 10
I forgot how much fun it is to OC locked multipliers biggrin.gif
Unfortunately the only experience i have with intel CPUs is my 2500k.

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post #8 of 10

Look at my newbie guide in my sig. Also feel free to shoot my a message. I loved my Q6600 :D I managed 4.2Ghz off of that beast ^_^

 
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post #9 of 10
Quote:
Originally Posted by ozMoeSyz View Post

So I got it working and stable at 3.0ghz by doing the following:
- All stock settings (Default Vcore, 1.25 FSB, 1.525 MCH/ICH)
- Raised FSB to 333
- Memory set to 266/533 with voltage lowered to 1.8, timings at 4-4-4-12
The main issue seems to be with my memory timings. I've been unable to get the system to even boot at anything other than 266/533 and 4-4-4-12 with the 4 sticks of RAM. The auto settings work fine, but the second I put them to manual everything seems to fall apart without using those. This is even without touching the processor settings at all.
I think I'm pretty content with this setup, but if anyone has suggestions for getting to 3.2ghz with the setup, I'd be happy to give them a shot! What do you think the max safe voltage would be for the 1.8v RAM?


loose the timings.
tjis will give you a shot
A bit more vram won't hurt
post #10 of 10
usually when you have more than 2 sticks of ram, you need to raise the Northbridge (NB) voltage, as 4 sticks of ram places more stress on the memory controller.
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