Q6600 Wont Overclock

Kobrakai

Kobrakai

Kobrakai

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Every attempt I have made to overclock (or underclock) my Q6600 by even as little as 1Mhz has failed.

All that happens is I save the settings and exit the BIOS, then the computer switches itself off, then on again straight away, then waits 10 seconds and switches off again, then when it comes on again the second time it has reset my overclock to the default 9x266Mhz again.

I have tried setting the RAM voltage to 2.1 as reccomended by Corsair, the CPU voltage to 1.45, the northbridge to +0.1, and the RAM to 1:1. I have tried the RAM latency at both 4-4-4-12 as advertised on the box, and 5-5-5-18 as my motherboard sets it by default. But no matter what I change it wont boot if the FSB is anything higher or lower than 266Mhz.

Dynamic overclocking (CIA2) seems to work fine if I set the RAM to 1:1 otherwise it blue screens complaining about memory.

I tried updating to the latest BIOS (F6) but that was worse, I couldn’t change anything in the BIOS without it going into a continuous loop of turning on and off after a few seconds until I physically reset the CMOS, so I went back to the F4 BIOS.

At first I thought it was the motherboard so I RMA’ed it and ordered a new one from a different supplier of the same make and model, but the problem is still there. I suppose it could have been a bad batch but that seems highly unlikely as I ordered them a week apart from different suppliers?

I tried phoning Gigabyte technical support in the UK and they told me they had never heard of the problem. I really don’t want to RMA the board again as I have already RMA’ed it twice as it is (first time it arrived physically damaged and I never even tried it). Is it possible that something else is to blame such as the CPU or memory?
 
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Turns out dynamic overclocking doesn’t work as well as I thought. I started getting some blue screens in windows yesterday and decided to run Memtest, after 15 minutes I had 800+ errors.

I played around in the BIOS enabling and disabling things and then running Memtest for a bit, and I now know that it only shows errors when I have the dynamic overclocking turned on, despite the RAM running at 1:1 which underclocks it by 200Mhz.

I tried taking out all but 1 stick of RAM and it still wouldn’t overclock, then I tried an old Corsair PC5400 512MB module and no luck, so I tried moving the module to a different slot and still nothing. So I’m pretty sure it’s not the RAM now. I heard that memtest can report errors if there is a problem with L2 cache, do you think it could be my CPU?
 
duff CPUs are extremely rare. they are thoroughly tested before they even leave the clean room /fabby.

its possible your motherboard is faulty. (many more things to go wrong)

i've a similar system but with a P35-DS3P and OCZ ram (same amount though), i can clock to 3GHz easy.

if you don't want to RMA it again, you could accept its Stock performance for now, and buy a new board when Intels new Chipset comes out and overclock it then. a Q6600 should have no issue running anything for at least 5 months.
 
Kobrakai did you ever find a solution to this?

I have almost the exact same issue (Gigabyte P35 DS3R + Q6600). Whenever I opened CoreTemp the PC would reboot and I would be back to 2.4Ghz CPU!

Did you use Coretemp?
 
I had the exact same issue with the P35-DQ6 and Q6600. Even a 1MHz would send it into a rebooting loop. I thought it was my RAM too but as its different brand to yours I'm thinking its a problem with the board.

I know the CPU clocks to 3GHz on my Asus P5WDH so it isnt that

Anyway I RMA'ed it and am reluctant to get another one. Its a shame as I read so many good things about the DQ6 and had high expections. I can't believe Gigabyte haven't heard about the problem but maybe its a recent bad batch thats causing it.

Now I need a suitable non-Gigabyte replacement... Abit IP35Pro or back to Asus, any ideas?
 
I'm currently on a P35-DS3R and a Q6600 with OCZ ram, but had OcUk value ram in it before. Currently sitting at 3.6Ghz without a care in the world, I know this doesn't help much but its just to show what is possible and that perhaps you are just having a bad run of hardware luck :(
 
Hi kobrakai
I had the same problem with a dq6 not allowing to overclock it.
The spec was core 2 duo 6750,4gb ballistix 8500,8800 gts and a wd 500gb sata.And was running vista 64 bit everything was fine and stable until i tried to overclock it would not allow a 1mhz overclock :eek:
I tried everything from cpu to memory.
Like you i was using an enermax infiniti 720w i changed the power supply to an old corsair and it overclocked straight away to 3.2 ghz :D
So i contacted enermax about the problem and i'am waiting to hear from there technical support.
Hope this helps
 
flunky404 said:
Hi kobrakai
I had the same problem with a dq6 not allowing to overclock it.
The spec was core 2 duo 6750,4gb ballistix 8500,8800 gts and a wd 500gb sata.And was running vista 64 bit everything was fine and stable until i tried to overclock it would not allow a 1mhz overclock :eek:
I tried everything from cpu to memory.
Like you i was using an enermax infiniti 720w i changed the power supply to an old corsair and it overclocked straight away to 3.2 ghz :D
So i contacted enermax about the problem and i'am waiting to hear from there technical support.
Hope this helps
Click to expand...

Hmm that’s interesting, any chance you could post back here what Enermax say?
 
Just had this problem with my dq6, been running my g0 at 3.7ghz for the past ~2 months and then all of a sudden it couldn't boot even 1mhz over stock.

Took the battery out and shorted the pins next to it, rebooted set all my settings again and resat the hardware and I'm back to 3.7. :confused:
 
Yeah no probs i wil let you know what enermax say's.
After i got it overclocked with the corsair i thought it must be a duff psu so i was going to rma the infiniti 720.
But as a last try i put it in my gaming rig ( see my sig) and the enermax was fine.
So i think there might be a problem between certain enermax psu's and gigabyte boards.
 
No I'm having the precise same issue on the Cosair 620w PSU on the Q6600 G0 and the Gigabyte GA_P35C_DS3R with 2 x 2GB of OCZ Gold Series 6400 Memory. I just have no idea where to begin diagnosing the problem but any minor change to the CPU multiplier sends it into a short frenzy of reboots before it resets itself to 2.4ghz, or sometimes even underclocking itself to 2.1ghz!
 
Matt Van Dam said:
No I'm having the precise same issue on the Cosair 620w PSU on the Q6600 G0 and the Gigabyte GA_P35C_DS3R with 2 x 2GB of OCZ Gold Series 6400 Memory.
Click to expand...

That’s a shame, I thought we had finally cracked it there. It still doesn’t make sense that changing the PSU worked for flunky404 though.

looking through this thread, the only thing everyone that has this problem seems to have in common is a Gigabyte P35 board and a Q6600. I’ve already tried replacing the motherboard so by process of elimination it has to be the CPU?

EDIT: Just seen somebody had a core 2 duo 6750, back to square one again :(
 
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Hey folk's, I am having the exact same issue as everyone else here, but I think its all down to the Gigabyte boards being the main problem nothing else.

P.s Hope someone finds fix soon or i'm buy a new board ASAP :mad::mad::mad::mad::mad::mad:.
 
Hi all
I just got the email from enermax

We have taken a look into your issue. We overclocked our C2D E6750 to 3.2Ghz with ease and then added some more software load onto the system. We found no issue with the Infiniti and the Gigabyte board.

Please make sure you are running the latest BIOS for your M/B. If this doesn’t solve the problem then we can setup an RMA

I will make sure it's the f6 bios tonight.
A few years back i had a problem between an antec psu and and asus board i could not install xp!.Stuck a different psu in and it worked fine.
 
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