Q6600 Overclock Voltages

Burts · November 23rd, 2008, 09:03 PM

I want to overclock my q6600 to 3.0ghz-3.2ghz, I read a lot of info but I dont understand is how to know when to manipulate the voltages of my chip. Perhaps I can hit 3.0ghz with the regular voltage but what about 3.2 ghz? How much increments do you give it?

Im waiting on a new cosmos s case with a new 280gtx and dont want to bottleneck too badly. I shouldnt have a bad cooling problem with my new case.

KarmaKiller · November 23rd, 2008, 09:18 PM

First, download coretemp. What is the VID on your chip?
Next, get CPU-Z, and you probably want Prime95 also.

Every chip is different. But most G0 stepping quads with decently low VID's will get to about 3Ghz on about 1.36 v-core. Depending on the motherboard of course.

Burts · November 23rd, 2008, 09:37 PM

What is the vid on my chip, how do I know that?/Edit oh core temp gets the vid ok
I found this in a overclockers forum just now is this how its done?

I figured out what sort of voltage my chip needs this way:

I raised the front side bus a little bit. Then I ran 4 instances of Prime95 for a couple of hours. If none of them crashed, I went back to my bios and raised my FSB a little more and then booted my machine and ran four instances of Prime95 again. Whenever an instance of Prime95 crashed, I went back to my bios and raised my core voltage. If I raised it enough, Prime95 wouldn't crash on any of my cores... so I'd go back to my bios and increase my FSB again... etc etc etc repeat process over and over until temperatures become a problem or some instability occurs and you have to work on it (like memory timings etc). When you get to where you are comfortable with your OC and your system seems stable, Fire up 4 instances of Prime95 again and go to bed.

Check back on it at lunch time or so the next day. If all four instances are still running, then pop your memtestx86 boot disk in and reboot your machine. Let memtest run a few passes. That will probably take a while, so finish your day and take your wife out to dinner and a movie. When you get home, if memtest hasn't found any errors, then your current settings are probably pretty good and it's time to start fine tuning a few things and maybe finding out just how far your memory can be pushed.

It pays to be patient and your computer will reward you for your patience later.

Burts · November 24th, 2008, 12:23 AM

vid is 1.3125
My mother board is a asus p5k-e wifi I just installed AI Booster and PcProbe
my cpu frequency is 266 and cpu is at 2.4 ghz ratio is 9 , so figure 266x9=2.4 ghz, can I just pump my frequency to 333 x9=3 ghz

My pc probe temp and my ai suite cpu temps are the same but its both not the same as coretemp. I think I trust my pcprobe temp more cause it came with mobo.

Burts · November 24th, 2008, 01:14 AM

Something wierd

I adjusted ai booster to 333.0 with a cpu ratio of 9 i figure that would be 3.0ghz it was on 266. But on AI Suite it shows my fsb at 1335.76, cpu frequency at 2003.67mhz, 333.94x 06.0.

Is 06.0 my multiplier ratio is on 9 in cpuz says 6 is my multiplier? I realize this is in mhz and not ghz

Restored to defaults(stock settings) and it says
fsb 1069.09
1603.56 mhz
267.25x0.6.0

Got it ONLY UNDER STRESS DOES it go to 9 multiplier

At 3.0ghz by raising ai booster to 333.0 ratio of 9 my system restarts when I stress it and is unstable what gives? And if I do lock up from manipulating vales from my desktop will I be able to unchange it in bios after a lock up?

Fizur2002 · November 24th, 2008, 08:53 PM

i had the same asus board, and the reason its showing the 6x multiplier is the power saving functions of the processor. When you start using it again, it will raise the multiplier back up to what it needs to be at. On my Q6600, i can get away with 1.35v and get 3.4Ghz and be 100% stable, but i have a G0 stepping, so i have a little more overclock headroom than you probably do. I have mine set at 425x8 and 1.35 volts to get 3.4 with higher FSB.

Burts · November 25th, 2008, 10:01 PM

Ok I upped my my buss from 266 to 300x9 and left voltage stock. (THROUGH MY BIOS) I then loaded it with prime 95, im in Hawaii so I dont know the exact temp but its nice and cool right now. Im monitoring with cpuz, Asus Pc Probe, and core temp. My max readings was 77C from Core Temp and 64C from Pc Probe, I then stopped it.

Its idling right now at 55C Core Temp and 41C Asus PcProbe

Reverted back to stock settings 2.4 ghz its running prime 95 now with 77C Core Temp, 64C Pc Probe at 2.4 ghz stock. Thats the max of core 0

KarmaKiller · November 25th, 2008, 10:18 PM

That's way warm. What cooler are you using?
You don't want anything over 70c.

And about the VID, that is the highest VID Intel came out with on Q6600's. Generally, you get about 3Ghz, and that's it out of those. Unless you use crazy voltages, but I don't think you wanna do that.
And I think that's maybe why your temps are so high. If you left your v-core set to [Auto] then more then likely your board jacked up the v-core thinking it needed to. (which in most cases, those VID quads can do 3Ghz on 1.4v-core.)
So I would double check to make sure you don't have insanely high v-cores.

Fizur2002 · November 25th, 2008, 10:27 PM

i would set it to 1.35v on the vcore and try it again, that should drop your temps down considerably.

Burts · November 26th, 2008, 02:34 PM

Ok just fired her up, now im in a cosmos s case with like 8 fans, and I cleaned my cpu heatsink as it was totally covered with dust.

I have a ssc vga 280gtx comin in today which is why im trying to oc. My 8800 gtx is artifacting and I cant find the receipt to get a rma. 3.0 ghz is my max then, so I have some questions?

Is it worth upgrading to a better socket 775 cpu or is buying another mobo , cpu , ram the best choice for me. I was happy with the performace with 2.4ghz with my 8800gtx

Ok I changed cpu voltage to 1.35 and raised fsp 300x9=2.7ghz
I get 71 C max on core temp, asus probe would read like 62C, im goin to leave it like this for now, I dont know what my stock voltage was however. Gtx280 just came in ill put it in now.