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Q6600 Overclock

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October 10, 2008 1:12:45 PM

I received my Q6600 (and other parts) on Wednesday, and thanks to all the guides posted here, I overclocked it to 3420mhz (380 x 9) at 1.38750v. I idle in the very low 20's, and at full loads I reach about 45C on Core 0.

I do have 1 problem though... When I increase the FSB any higher than 385, the system becomes unstable. I went up as high as 1.4v and I received an error after only 1 minute of stress testing. I wanted to know if I should increase the voltage any more and try for a higher OC, or keep it at its current settings... Any advice as to what I should do?

My System is as follows:

Intel Q6600 Processor (Revision G0)
ASUS P5Q Pro Motherboard
Arctic Cooling Freezer 7 Pro HSF
8gb DDR2-800 G.Skill RAM
3 x 500gb Seagate HDDs
500 watt PSU
GeForce 8800 GS GPU

More about : q6600 overclock

October 10, 2008 8:33:24 PM

What's your NB voltage set at? You're really not going to see much increase past 3.4ghz, so if it's not stable, I wouldn't bother.
October 10, 2008 10:00:48 PM

I have my NB set at auto. I read that this doesn't need to be changed, but correct me if I'm wrong...
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October 10, 2008 10:16:44 PM

This is incredible. I have a Q6600 with G0 stepping on a water cooled rig and my temps are 40 idle/58 full throttle. I only OC'd to 3.0GHZ. What in the heck is wrong with my cooling? I wasted time and money on water cooling and I get much worse results than a $35 artic cooling freezer.
October 10, 2008 10:46:37 PM

Oh wow. O.o
My room's fairly cold (22-24C), so maybe that's the issue? I also have a case with a very good airflow (4 fans)
October 10, 2008 11:34:25 PM

also do you have the tjunction max set properly with whatever monitoring program your using? For a q6600 G0 the tjunction max should be set to 100. That could change the temperature of your cores if set incorrectly. If it is set correctly then major props to you, those are some nice temps.

As for increasing the overclock, personally i dont mind increasing the vcore up to 1.4~1.45 just so long as you can keep the heat off.
October 10, 2008 11:34:26 PM

jwl3 said:
This is incredible. I have a Q6600 with G0 stepping on a water cooled rig and my temps are 40 idle/58 full throttle. I only OC'd to 3.0GHZ. What in the heck is wrong with my cooling? I wasted time and money on water cooling and I get much worse results than a $35 artic cooling freezer.


What's your CPU voltage set to?
What Water Cooling unit did you buy? Most "affordable" units are not very good.
October 11, 2008 12:59:02 AM

kyeana said:
also do you have the tjunction max set properly with whatever monitoring program your using? For a q6600 G0 the tjunction max should be set to 100. That could change the temperature of your cores if set incorrectly. If it is set correctly then major props to you, those are some nice temps.

As for increasing the overclock, personally i dont mind increasing the vcore up to 1.4~1.45 just so long as you can keep the heat off.


I'm using RealTemp with the Tjmax set to 100.

As for overclocking, I'll try getting it higher once I'm back up and running. My computer won't do anything other than supply power to everything since moving to the new case that arrived today, so I'm busy trying to figure out how to fix it. I hope I don't have to send anything back, because it takes a minimum of 4 weeks to ship anything and get it back where I live... I'm a little dismayed that it stopped working as soon as it did.
October 11, 2008 1:47:44 AM

go ahead and reset the bios on the move to the new case, just to make sure everything works as it should. Also make sure you have the spacers correctly installed so there are no shorts and that the 20/24 pin connector and the 4/8 pin connector are installed.
October 11, 2008 1:53:00 AM

kyeana said:
go ahead and reset the bios on the move to the new case, just to make sure everything works as it should. Also make sure you have the spacers correctly installed so there are no shorts and that the 20/24 pin connector and the 4/8 pin connector are installed.


I did all of that before moving, and I've had the problem since. Basically, the fans/hdd's/lights/GPU/etc all power on, but the screen remains blank, the mobo doesn't post, and there's no beeps when starting. I've spent the last 5 hours or so working on fixing this... I'll be doing more work on it tomorrow and will hopefully be able to revive it.

I also realize that increasing the NB Voltage might help in stability, so hopefully I'll be running soon and can try to hit 3.6ghz...
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October 11, 2008 1:59:43 AM

Also by the looks of it you seem to be running 4*2GB DIMMs. You may need to increase the voltage a bit (~+.1) over what you have now. Also try increasing FSB Voltage and if the board has it enable LLC.
October 11, 2008 2:10:17 AM

I would, but I can't even get into bios =/
October 11, 2008 2:14:12 AM

What case do you have and what is the configuration of your said 4 fans? Those temps are really good!
October 11, 2008 2:22:30 AM

Asian PingPong said:
What case do you have and what is the configuration of your said 4 fans? Those temps are really good!


I just bought this case. I haven't seen the temps on it yet, but it should be as good, if not better than my previous case which has less air flow. As far as I can tell, the fans are all running as fast as they can go.
October 11, 2008 2:39:46 AM

Like another poster said! Make sure the 20/24pin power is plugged in and the 4/8 pin for the cpu is plugged in. It sounds like your missing the 4/8 pin cpu power connector. People forget it all the time!!!!!!!!!!!
October 11, 2008 10:35:23 AM

I've checked both of those several times.
October 11, 2008 1:28:58 PM

there may be a short somewhere then. See if you can get the system running outside of the case (say on cardboard) and then check anywhere that there might be a short (most likely spacers or fallen screws, etc.)
October 11, 2008 4:33:34 PM

kyeana said:
there may be a short somewhere then. See if you can get the system running outside of the case (say on cardboard) and then check anywhere that there might be a short (most likely spacers or fallen screws, etc.)


So far I've tried it without a case, in another case, and in the same case, so there's no shorting problems. I've taken out everything other than the CPU and received no warnings, so at this point I've declared the board dead and I'll have to RMA it. I'm pretty upset it only lasted 3 days, but such is life. Hopefully the next board will work... =/
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October 12, 2008 5:59:09 PM

Have you tried booting with 1 DIMM?
October 12, 2008 7:22:10 PM

I've tried everything there is to try. Again, I hope I receive a working board...
!