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Q6700 overclock
- Thread starter Phill4321
- Start date
After some testing, I've realised its not stable 
Got it running at 3.2ghz stable. Ran prime 95 for 2 hours, so it seems ok. My temps aren't too good though. Its at about 68c under load!! After looking about it seems like my processor is a bad clocker. Its a revision G0, B stepping with a VID of 1.3250v. Apparently these are the worst oc'ers imaginable!! Any one got any tips to clock this well??
Got it running at 3.2ghz stable. Ran prime 95 for 2 hours, so it seems ok. My temps aren't too good though. Its at about 68c under load!! After looking about it seems like my processor is a bad clocker. Its a revision G0, B stepping with a VID of 1.3250v. Apparently these are the worst oc'ers imaginable!! Any one got any tips to clock this well??
68 is no problem at all. Some temp applications show the distance from the thermal max rather than a guestimate of the actual temperature. On a Q6700 unless I am much mistaken the maximum tjunct is 100 degrees, so your still 32 degrees away from thermal throttling.
Nothing wrong with the G0's, though mine has a 1.2v VID. You dont mention what cooler your running, I have a Zalman on mine, and I am quite happy to have up to 70degrees temps (if all 4 cores are at 100% load) I have my cooler set to be quiet though rather than flat out optimal cooling. (Very few apps generate as much heat in the CPU as 4 threads of prime testing, my CPU averages 50 degrees when playing games for example).
If its stable at 3.2Ghz then just ignore the temps... Just make sure in the summer they dont go much past 85
and keep the cooler clean. If you are still worried about temps stick on a bigger cooler.
Nothing wrong with the G0's, though mine has a 1.2v VID. You dont mention what cooler your running, I have a Zalman on mine, and I am quite happy to have up to 70degrees temps (if all 4 cores are at 100% load) I have my cooler set to be quiet though rather than flat out optimal cooling. (Very few apps generate as much heat in the CPU as 4 threads of prime testing, my CPU averages 50 degrees when playing games for example).
If its stable at 3.2Ghz then just ignore the temps... Just make sure in the summer they dont go much past 85
and keep the cooler clean. If you are still worried about temps stick on a bigger cooler.
Keep it cold is the main thing. The colder the better. A high vid isn't automatically a bad thing, but a low one is preferable.
This is a 65nm quad, which pretty much means you can thrash it in relative safety. Some people ran these at 1.6V under water for years. I think 1.5V is generally taken to be the sensible limit with these, but as it looks like you're currently temperature limited this doesn't matter.
To clarify, temperatures aren't just hazardous, the hotter it is the more voltage is needed to hold a clock. Since it also runs hotter the higher the voltage you apply cooling is important.
edit: I agree with Corasik that the actual temperature isn't directly important, but the decrease in stability as it runs hotter is.
This is a 65nm quad, which pretty much means you can thrash it in relative safety. Some people ran these at 1.6V under water for years. I think 1.5V is generally taken to be the sensible limit with these, but as it looks like you're currently temperature limited this doesn't matter.
To clarify, temperatures aren't just hazardous, the hotter it is the more voltage is needed to hold a clock. Since it also runs hotter the higher the voltage you apply cooling is important.
edit: I agree with Corasik that the actual temperature isn't directly important, but the decrease in stability as it runs hotter is.
Hi, forgot to mention the cooler I use is a Noctua nhu12f. Its a pretty big heatsink with a 12cm fan strapped to it. http://www.anandtech.com/showdoc.aspx?i=2976&p=9 Its one of these bad boys. The temps I reported above are from the core. So in some instances the cpu was running at 65c on the core as reported by core temp. Is this safe? I did manage to get it pretty stable at these speeds though.
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the core cpu temps are the most important, try to have the lowest voltage possible while keeping it stable, less voltage= less heat.
When your core temps reach 72 C, the cpu starts throttling (slow down) to reduce heat, in most cases will probabley BSOD or just go really slow.
Crysis running at 65 C, wow thats hot for a game. i have the Q6600 @ 3.2 Ghz (1600 FSB) @ 1.41 V and my temps never run that high in games.
Run intelburn test, this basically makes your CPU get really hot, make sure it doesn't get over 72 C if so reduce voltage, may try repaste your heatsink, i'm using a cheap Pro freezer 7. your's should be allot better than mine
When your core temps reach 72 C, the cpu starts throttling (slow down) to reduce heat, in most cases will probabley BSOD or just go really slow.
Crysis running at 65 C, wow thats hot for a game. i have the Q6600 @ 3.2 Ghz (1600 FSB) @ 1.41 V and my temps never run that high in games.
Run intelburn test, this basically makes your CPU get really hot, make sure it doesn't get over 72 C if so reduce voltage, may try repaste your heatsink, i'm using a cheap Pro freezer 7. your's should be allot better than mine
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Im running a qx6700 at 3.3Ghz stable. Passed intel burn test on high settings. Im using a Corsair H50 to keep my baby cool and my idle temps are 32 whilst righting this and when I too game in Crysis my temps get to 49 degrees. Like the other guys say try re seating the cooler, it may be out of sync a little bit. I had major problems with stability overclocking mine to 3.6 so dropped back to 3.4 but again was proving difficult to do so opted for 3.3Ghz and its running fine, no issues what so ever. If you need any more help on it just shout, I can pass you my timings and memory timings for you to have a go with.
G0 Q6700's dont throttle at 72C, its more like 100 before they throttle, and 120 before they go into halt state.
Core temp and other measureing programs are making a Guess on the cpu core's actual temperature based on a negative delta from the throttle point. IE if the chips throttle point is 100C, and its a G0 Q6700, the chips sensor would read -35C for a guestimate of +65C. The reason its a guess is because intel keep changing the throttle point, and its even possible that it varies from batch to batch, so it at best a "good guess". In general though the delta is believed to be consistant between steppings, so all G0's for example, be they Q6600, Q6700 etc "should" have a 100C reference point.
I've had my cpu up to the mid 80's when I was testing out how low I could safely go with the cooling fan speeds, and I assure you there was no throttling.
I am pretty sure that the 72C throttle point applied to the Northwood generation Pentium IV's. Intel chips since then have a higher throttle. Its nothing to worry about though, old Nvidia chips used to wait until 120C before they would start to throttle.