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 Q6600 Overclock and Temperature

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kmarc
post May 10 2008, 09:03 AM

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QUOTE(ahsiah @ May 10 2008, 07:17 AM)
This VID is the lowest that I see. Not sure how good OC will go. Please update us often.
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VID on core temp is sometimes not accurate due to various settings. It can be manipulated too.

Look at my "manipulated" Q6600 VID which is actually 1.3125v.... whistling.gif

Attached Image

A better software to show max and min VID is using the Rightmark CPU clock utility, which can't be manipulated.... wink.gif (unless you use photoshop..... doh.gif)

Attached Image

This post has been edited by kmarc: May 10 2008, 09:05 AM
kmarc
post May 13 2008, 11:40 AM

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QUOTE(mfcm @ May 13 2008, 07:21 AM)
huhu about vdrop i think almost all mobo in market face same thing bro nod.gif im oso face with vdrop when using DK lastime..altho when using UT now i still face it sweat.gif
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Just remember that vdroop is part of a power delivery design, to help reduce output-voltage spikes. It is not due to any flawed mobo.

However, better power design (which usually means more expensive mobo) would result in less vdroop.....
kmarc
post May 16 2008, 06:48 PM

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QUOTE(Dickong @ May 16 2008, 03:20 PM)
I wonder any of you guys know why my 6600 GO oc 3.2g @1.325v stable like a rock n have been using it for few months, but when i try to go up to 3.3g or 3.4g i have to raise the voltage until 1.4v for 3.3g n 1.5v for 3.4g, wonder why have to increase so much voltage, n the temp will go over 72+ which i dont like. My spec is as stated on my sign.
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That's considered normal. You will come to a point where you need much increase in vcore for minimal gains in speed. You just have to choose a sweet spot for your proc in terms of speed vs. vcore vs. heat.... smile.gif

QUOTE(BurgerRI @ May 16 2008, 06:27 PM)
getting a proc is like lottery....you never know when your going to end up with a gem or lemon...but a good indication of your proc's OC ability would be the VID, the lower the better...again its not a sure bet...
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Hmmmm.... looks like I ALWAYS get the lemon! laugh.gif Hehe, but I have only been using 3 Intel procs so far....

I think the best people to find gem procs are those OEM sellers..... can try out the whole lot and hand-pick the best.... drool.gif
kmarc
post May 17 2008, 11:31 AM

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Don't worry la.... My Q6600 need 1.400v in BIOS to run at 8x400.... sweat.gif
kmarc
post May 17 2008, 11:43 AM

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QUOTE(ysh_kobe @ May 17 2008, 11:35 AM)
Bro kmarc, got a question here. I've been running stable at 3.2ghz (400x8) on my Q6600. However sometimes, when starting the pc, it jumps back to stock clock, why did this happen??
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How did you test for stability? Recommended to stress your rig using orthos or prime95 for at least 6-12 hours....

It is possible that your mobo reset to stock settings due to instability........
kmarc
post May 25 2008, 07:39 AM

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QUOTE(VT-Ten @ May 24 2008, 11:30 PM)
stress test stable for 2+ hours with 333x9 1.28vcore.  rclxms.gif
need to stop the stress coz need to use the pc to burn dvd.  doh.gif
Nice. OC higher! thumbup.gif

Why are you using 4 instances of orthos? Download the new version of Prime95. The app stresses all 4 cores simulateneously..... no hassle of starting 4 orthos and setting core affinities.... smile.gif

Keep the temperature around 60-65'c though...

This post has been edited by kmarc: May 25 2008, 07:40 AM
kmarc
post May 25 2008, 05:06 PM

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QUOTE(campsol2k @ May 25 2008, 03:52 PM)
One quick ques. One of my CPU core(out of 4) failed during prime95. Is it consider stable?
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Quick answer - nope. Not stable.... wink.gif
kmarc
post May 30 2008, 07:00 AM

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QUOTE(ocz @ May 30 2008, 05:54 AM)
whats the safest vcore to run Q6600 at 3.2Ghz (360X9).I am using stock vcore now.The temp are around 40C idle.
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For 65nm procs (including the Q6600), recommended not to go over 1.5v..... keep temp below 60-65'c....

Of course, the lower the better..... me at 1.400v 24/7 already sweating... laugh.gif

Stock vcore in BIOS? What's your vcore at load?

This post has been edited by kmarc: May 30 2008, 07:00 AM
kmarc
post May 31 2008, 07:35 AM

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QUOTE(campsol2k @ May 30 2008, 11:58 PM)
a question about EIST. Does it works on overclocked PC?
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Yes it does. However, your rig might not as stable as with an OC with disabled EIST/C1E.....

Another problem with EIST/C1E turned on, especially with high vcore, is that the vcore might transiently overshoot the safe limit when you go from load to idle.... that's one of the reason of having vdroop (you can read more about vdroop in my C2D/C2Q overclocking guide..... or you can google more about it) smile.gif

For mild-moderate OC, with lower vcore, there shouldn't be a problem with enabled EIST/C1E.....

This post has been edited by kmarc: May 31 2008, 07:44 AM
kmarc
post May 31 2008, 10:52 PM

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You mean the vcore is the same even when running at 2.0Ghz (333 x 6)? It shouldn't be.....
kmarc
post Jun 3 2008, 06:26 PM

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QUOTE(sotong168 @ Jun 3 2008, 05:59 PM)
hi all sifu, what is the suitable hsf to tame q6600, just for a mild oc to 3.2ghz.  is HDT-SD964 ok?  i know most might recommend s1283, cm 212 & etc but my prob is they are too tall to fit into my poor mid-tower, and kind of out of my budget too... thks~
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I think you would need a better HSF although I don't know which better HSF will fit your casing....

I guess it would also depend on your proc too..... can't confirm it but maybe a lower VID q6600 will run cooler at 3.2Ghz (due to the lower vcore required to run at 3.2Ghz)....

My Q6600 G0 is running at 3.2Ghz at 1.400v BIOS (see my sig), cooled by xigmatek S1283...... temperature at load is 64-65'c using prime95 and 61-62'c when folding.... And that's with a naked rig.... rclxub.gif
kmarc
post Jun 3 2008, 08:22 PM

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QUOTE(sotong168 @ Jun 3 2008, 06:51 PM)
thks 4 the info... rite now using low-end evercool buffalo, under 26c ambient temperature my q6600 @ 1.285v bios @ 3ghz @ idle 36c and load 57c, yet to try on 3.2ghz coz not comfortable with high vic
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Nice vcore! thumbup.gif Why not OC to 3.2Ghz to see how much you need for the vcore and how high the temperature rises? hmm.gif
kmarc
post Jun 3 2008, 08:41 PM

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QUOTE(sotong168 @ Jun 3 2008, 08:37 PM)
s1283 outperformed sd964 for sure, but that would required me to chg chasis
dunno why, managed to run 3ghz @ 1.285v at no sweat but for 3.2ghz, prime failed even i set to stock vcore @ 1.325, so gave up...
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Wei, mine need 1.4v to get to 3.2Ghz ler...... your vcore can go higher ma!!! thumbup.gif
kmarc
post Jun 4 2008, 11:42 PM

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QUOTE(Dickong @ Jun 4 2008, 10:05 AM)
Hi, just curious to know, i set my vcore @ 1.275v, at 3.2g n stable playing game n do multi tasking, but will fail prime quad unless set to 1.325v vcore, suggestion at 1.275vcore or 1.325vcore. which setting will you set, moreover ,no doubt we are using quad core most of the time i notice our processor is using dua core the most, thats why when i sat my vcore to 1.275v is stable like a rock, but not quad prime. Any comment. TQ
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That's the reason why a CPU needs to be stressed to find out whether it is stable or not. Prime95 is one of the more common app for doing that.

There are other reasons but it is possible that your rig is ok when doing normal things as all 4-cores are not stressed fully, thus resulting in a smaller vdroop. However, when all 4-cores are stressed to the max, e.g. using prime95, the vdroop is usually maxed....

For example, for my Q6600....

Vcore in windows idle :1.37v
Vcore doing normal things/playing games : 1.34v
Vcore at prime95 small FFTs : 1.312-1.328v

In short, the more the CPU is stressed, the larger the vdroop, which makes the actual real vcore lower and thus less stable... smile.gif

This post has been edited by kmarc: Jun 4 2008, 11:45 PM
kmarc
post Jun 9 2008, 07:47 PM

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QUOTE(butthead012 @ Jun 9 2008, 07:30 PM)
here is a pic... running prime95 now~~~  biggrin.gif is this normal? or i put too much voltage? blush.gif

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That's a nice overclock. However, you should stress with "Small FFTs" in prime95......
kmarc
post Jun 23 2008, 06:40 PM

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QUOTE(dARKaNGEl @ Jun 23 2008, 09:40 AM)
i wonder how come you guys can set the vcore so low and yet prime stable.

i just changed my Q6600 G0 stock hsf with hyper212 and changed all my 3d aurora fans to the 90cfm fans (2 exhaust, 1 intake).

I tried several settings to achieve 3.0GHz
bios vcore 1.325v 9x333
vcore 1.325v 8x375
these 2 setting, i can prime stable around an hour plus only... then my pc hung.
load temp shown in core temp is 63C

i bumped up my vcore to 1.343v 9x333
this time, i can prime stable for slightly more than 3 hours. then pc hung again...
load temp in core temp is 65C

btw, i primed using the second option where it says generates maximum heat, most power consumption...

the only 2 things i changed were the multiplier and vcore settings in bios. others left as auto. is there some other voltage i need to change to get it stable? what is this vtt in my bios?

maybe i will try 1.400v and test again tonight. but any other suggestion from u guys?
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Some are gems procs which require less vcore....

My Q6600 is normal quad which needed a bios setting vcore of 1.35v to get to around 3.0Ghz.....

See my sig... I need 1.4v to get to 3.2Ghz..... doh.gif (my vdroop also quite large actually)
kmarc
post Jun 24 2008, 05:16 PM

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QUOTE(Dickong @ Jun 24 2008, 06:31 AM)
Kmarc, saw your signature using gigabyte ds3 mobo, wonder did you put a fan at the NB heatsink, i put 2 small fan on the heatsink n was wondering my cpu temp so high , might be the course of the NB fan. Any ideal.
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Yup, I have one fan blowing downwards towards the NB.....

Errrr..... what CPU HSF are you using? Fans blowing on the NB shouldn't affect the CPU temperature ma.... unless your fans are blowing against the CPU fan.... hmm.gif

This post has been edited by kmarc: Jun 24 2008, 05:16 PM
kmarc
post Jun 25 2008, 02:13 PM

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QUOTE(Dickong @ Jun 24 2008, 11:26 PM)
My nb fan i took it out from my cm blue ice, its quiet strong thats why i am worry it my blow air toward the cpu, anyway i still believe my mobo sensor is having problem becos i have tested many ways of cooling my cpu but then still not much improvement, presently cpu voltage at 1.325 @3.2g n quad prime highest is 67c n lowest at 60c. But strangely 2 core will show about 8-10c different than the other 2 core. Example core 1n 2 show 67c 3n4 58n59c respectively.
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Sometimes, an improperly seated HSF can cause a wide variation in temperature between the cores. However, some variation is normal. For example, my quad is currently folding at 60'c, 52'c, 54'c and 57'c......

Why not blow air away from the CPU? hmm.gif

QUOTE(Thrust @ Jun 24 2008, 11:31 PM)
What's the advantage of running at 8x400Mhz instead of 9x356Mhz to achieve 3.2GHz clock speed?
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Higher FSB will allow your CPU to communicate faster with the northbridge and also other components in your rig e.g. rams.... In overclocking, it is usually preferable to choose a higher FSB (hence a lower multiplier).... however, in the end, it would also depend on your rams, where ideally, you want your FSB to run 1:1 with your rams.....
kmarc
post Jul 8 2008, 11:29 AM

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QUOTE(nas @ Jul 8 2008, 07:19 AM)
Guys, what is the max load safe temperature for Q6600?
*
There's no maximum safe temperature for any processor. The lower it is the better....

However, it is generally recommended to keep your CPU's temperature lower than 60-65'c.....
kmarc
post Jul 9 2008, 03:20 PM

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QUOTE(Reuben @ Jul 9 2008, 01:57 PM)
Hi guys I just joined the Q6600 G0 bandwagon.

Appreciate some tips to improve my overclock:

Processor: Q6600 G0 currently running at 3.0 ghz  333x9 (tested with 12 hours prime) using HyperTX cooler and 1.365 voltage
Motherboard: Asus P5KR with vdroop pencil mod
RAM: 2 x 1gb Team Xtreem RAM DDR2 1066 running at 667 mhz (for troubleshooting first) at 5-5-5-15 at Auto Voltage
PSU: Gigabyte 850 W Odin
GFX: 2x4850 Crossfire (non oced)

Right now 3.0ghz is fine. Temps are around 47C Idle but jumps up to 69C ish after about an hour of priming based on Speedfan. A bit concerned about temperature.

A note that before the pencil mod, I could not get my overclock higher than 2.8ghz as the voltage kept on fluctuating.

But if I try to run it at 3.2 ghz I'll get an error at Core 2 using Prime(that is 0,1,2,3).  Tried increasing the voltage but still received the error within a few minutes of running even at 1.425 V

Have I really hit the limit of my processor or is the mobo to blame or my pencil mod? Please note that without the pencil mod I could not even get up to 3.0ghz.
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Q6600 G0 shouldn't need any pencil mod to OC higher...... what's your vcore in bios, windows idle and prime95 stress?

What's the VID of the Q6600? Use core temp to see the core temperature and also the VID.

Even my G0 with a high VID can run at 1.312-1.328v at 3.2Ghz at load.

Did you check for your max FSB of your mobo using those settings? It could be that your NB strap is set to a lower mhz....
Try running your CPU at a lower multiplier and only OC the FSB, just to make sure you can go higher on the FSB....

Lastly, get a better HSF... wink.gif


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