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Q6600 Stuck @ 3Ghz

post #1 of 5
Thread Starter 
Hi Everybody,

I'm experiencing some difficulties while overclocking my Q6600 G0. I see a lot of people around these forums getting as much as 3.4 or 3.6Ghz on air out of it, but for some reason i'm stuck at 3.0Ghz (333x9 @ 1.33v), with my memory on 887Mhz (2.21v).

I'm using a big aftermarket cooler and my idle CPU temp is only 30c, so no problems there. The northbridge does run a little hot though (52c @ 1.34v), but nothing to worry (i guess). I tried upping my core voltage to 1.400v, as well as my Northbridge voltage and upped my memory voltage to 2.34v, but this doesn't get me any further. Also lowering my memory tot 800Mhz won't do the job.

I'm a little bit affraid to push my memory any further, as 2.34v is quite high already. I think the memory is the bottleneck here, while i expected it to go a lot higher. Im not really charmed with the timings to (5-5-5-15), but i can live with that.

My ideal speeds are at least 3.2Ghz with my memory on 1066Mhz, which isn't to much asked in my opninion. I did these clocks rock solid on my ASUS Commando before i managed to kill this one (still didn't find out how though).

Any input woud be appreciated!
Greetz.
Edited by FrankyDeluxe - 5/27/08 at 4:15am
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post #2 of 5
Try setting your RAM speeds to thier stock 800MHZ and stock timings and voltages while OC'ing your CPU to start with. DO NOT push your RAM voltages any higher or they will fry!!!!

I dont think you will get 1066Mhz out of that RAM. But 3.2 is a reasonable speed for a q6600.

You will need to up your NB, SB and FSB volts to get a stable oc but only a little.

Im pretty sure its your RAM causing some kind of problem. Sometimes having 4x1GB sticks can limit your oc.
Keep your core volts @ around 1.4-1.45v for now until you get a stable oc then reduce a little at a time.
You should get good results as that is a good cpu/mobo combo there.

Have you turned off all the speedstep crap and enhanced halt etc...???
Edited by cptjharkness - 5/27/08 at 4:28am
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post #3 of 5
Looks like your OCing 4 sticks of ram. Going to take plenty of NB voltage for that + 4 cores
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post #4 of 5
Well, Franky,

I'd like to immediately suggest backing off that 2.4v on the RAM, as it should definitely not need higher power at lower than stock settings.

I had a lot of confusion while OC'g my E6600 last week. Turned out to be vdroop, which I'd heard of, but had not experienced (until now).

When you change the cpu voltage, enter the BIOS again after the reboot and go to the "Power" tab, then down to the "Hardware Moniter" and hit <enter>.

Check the voltage setting displayed for the CPU. It may be considerably lower than you set it at. If so, you have vdroop.

What you will want to do, if this is the case, is to reset the CPU voltage higher than you want, rebooting, and checking again in the "Hardware Moniter" to make sure it is registering the voltage you want.

I have been compensating for my vdroop all week, showing my vcore as 1.6v in my settings, but only getting 1.5v in my "Hardware Moniter" and monitoring software (CPUID, CPU-Z, etc.).

Since correcting my vdroop my max stable OC has gone up from 3.2v to 3.44v. I hope you have as positive an improvement.

Just be SURE to back off those RAM volts, or you OCZ will be 'reaped' itself!!
Very best of luck.
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Aging Gracefully
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Bleak View Post
I'd like to immediately suggest backing off that 2.4v on the RAM, as it should definitely not need higher power at lower than stock settings.
Yes, i found 2.34v a little high myself, but the OCZ stick are always pretty power hungry as far as i know. The stock voltage of these sticks where already 2.0v and OCZ guarantees up to 2.2v.

Quote:
Originally Posted by Bleak View Post
Check the voltage setting displayed for the CPU. It may be considerably lower than you set it at. If so, you have vdroop.
Yes, i did hear about this phenomena, though it differs per motherboard. I checked this and found dat the vCore voltage only differed 0.018v from what ASUS Probe II showed me, just like the vDimm voltage so i guess im lucky on that one.

Quote:
Originally Posted by cptjharkness View Post
Have you turned off all the speedstep crap and enhanced halt etc...???
Yeah sure, first thing.

Quote:
Originally Posted by cptjharkness View Post
Im pretty sure its your RAM causing some kind of problem. Sometimes having 4x1GB sticks can limit your oc.
I think you are right there, when i got to 1066mhz its was with only 2dimms.


I guess i was trying to hard getting up memory as well. I'm a little dissapointed though, when i bought this PC 6months ago, they claimed this memory was about the best it could get, so i expected somewhat more flexibilty from it.

Anyway, i set everything back to default and all started over. I got the CPU to 3.5Ghz now with my memory on 930Mhz, with no problems so far.

Thanks everyone!
Edited by FrankyDeluxe - 5/29/08 at 10:55am
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