Overclocking 'death' of e6600?

M

mndeg

Weaksauce
Joined
Aug 19, 2004
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Anyone ever had the performance of their cpu dramatically drop with no way to recover it? I've had this cpu for 2 years always overclocked and about 2 weeks ago, when OCing it, the performance does worse on benchmarks then it does with standard bios settings. And with standard bios setting the performance is worse than other e6600's.

I've formatted, even went from vista x64 back to windows xp
 
If your processor was actually damaged somehow by overclocking, I doubt it would work at all.

What are your temps like? Is it possible that it's throttling, thus giving you poor performance? I've seen many chips that are able to remain stable all the way up at TjMax and into throttling, with reduced performance of course...
 
E6xxx dieing awhile after oc...
Heard of it...not sure how to approach it though.
 
That's highly unusual. What sort of benchmarks are you running?

Why not post some SuperPI screens along with CPU-Z so other people can compare to what you're getting. The XS Bench in RealTemp is 100% CPU MHz dependent. At 3000 MHz your CPU should score 1000 points no matter how much memory or L2 cache a chip has.

Here's my E8400 locked at 500 x 6.0 ~ 3000 MHz

benchrw0.png


I agree with GotNoRice that thermal throttling might be an issue.
 
e6600.jpg.JPG


too high? core is set to 1.4 in bios
reaching 89C in left 4 dead, heatsink is warm to the touch
performance is notably poorer overclocked

I need to reseat and heatsink and reapply thermalpaste right? I remember when I had a non stock HSF on this e6600 OCed and it would heat up the surrounding air.
 
Are those your idle or load temps?

If your program has TjMax set at 85C, and you have recorded max temps of 80C, that is 5C from TjMax... I would not be surprised at all if it is throttling.

Edit: getting to 89C? I'd guess it would be throttling for sure at that point with an 85C TjMax...
 
those are idle temps. I don't know what TJ Max is, I did not set it
 
Holy shit! that is running way too hot. I have an E6600 also. I ran the chip at 400 x 8 = 3.2ghz for 1.5 years and it was perfectly stable until recently. Now I run it at 370 x 9 - 3.33ghz. Both at 1.448 vcore. I would run that at stock asap. My idle temps are 29c and 100% load of 57c
 
mndeg said:
those are idle temps. I don't know what TJ Max is, I did not set it
Click to expand...

TjMax is basically the temperature which your chip will throttle in order to protect itself from heat damage, which will also cause significant reduction in performance. TjMax changes from chip to chip, but it doesn't really matter what TjMax is, what matters is how close you are to it. You should generally try to keep no less than 15-20C from TjMax under MAX LOAD, as in, all cores loaded down with Prime95 or other similar program. If you're idling at <20C to TjMax, something is terribly wrong.

You should be more like 50C from TjMax at idle, at least.
 
Do you see those two check marks in the PROCHOT section of RealTemp? That means your processor has been thermal throttling since the last time you started up.

You better have a look to see your CPU fan is still spinning and not full of dust bunnies. When your processor starts to thermal throttle your MHz will drop down to about two-thirds of your normal MHz. No surprise things are feeling sluggish.

If you reboot those two check marks should go away. If they are still there after rebooting then your CPU is throttling while loading Windows but that doesn't happen very often. You definitely have an issue with CPU cooling.

There have been a lot of improvements to RealTemp during the last few months so try downloading the latest version:

http://www.fileden.com/files/2008/3/3/1794507/RealTempBeta.zip

It uses TJMax=90C for your E6600 based on IR thermometer testing. I realize that goes against Intel's recent TJMax releases but there is still a lot of controversy surrounding that. Intel has already bumped up their original news release by 10C for the B2 E6x00 CPUs. Maybe next month they'll bump it up another 10C. :)
 
That's interesting, didn't know those check marks were for throttling. Looks like I need to reseat my HSF

thanks!
 
unclewebb said:
Do you see those two check marks in the PROCHOT section of RealTemp? That means your processor has been thermal throttling since the last time you started up.

You better have a look to see your CPU fan is still spinning and not full of dust bunnies. When your processor starts to thermal throttle your MHz will drop down to about two-thirds of your normal MHz. No surprise things are feeling sluggish.

If you reboot those two check marks should go away. If they are still there after rebooting then your CPU is throttling while loading Windows but that doesn't happen very often. You definitely have an issue with CPU cooling.

There have been a lot of improvements to RealTemp during the last few months so try downloading the latest version:

http://www.fileden.com/files/2008/3/3/1794507/RealTempBeta.zip

It uses TJMax=90C for your E6600 based on IR thermometer testing. I realize that goes against Intel's recent TJMax releases but there is still a lot of controversy surrounding that. Intel has already bumped up their original news release by 10C for the B2 E6x00 CPUs. Maybe next month they'll bump it up another 10C. :)
Click to expand...

No doubt you are way ahead of me on this but speedfan has been updated as well and now has signed drivers and works great on 64 bit windows. I know a bunch of people gave up on that one, but it has improved a lot.;)
 
Looks like it was the HSF. I took off my retail HSF that was probably not installed correctly and put my aftermarket HSF back on and made sure the clips were in and now my temps are always below 53C even while playing games.

Tf2 framerates are back, they are always above 100 fps now :)
 
Were you running the stock HSF on that thing? No wonder the temps were through the roof. ;)
 
For those that didn't know, PROCHOT is Intel's technical term for processor hot which is a signal that goes off in Core processors when it's time to begin thermal throttling.

RealTemp has been updated from "Intel Speak" to English so it's a little easier to understand.

throttleoj5.png


OK means there have been no thermal throttling episodes since you booted up. When a core is throttling it will show up as HOT like in the picture. After your processor cools down from a thermal throttling incident it will display LOG to show you that an overheating episode has been logged. That should be a little easier to figure out than check marks flashing on and off in different columns. :)

This information is stored within the processor itself so even if you don't have RealTemp running at the time, you can start RealTemp up after the fact and it will check the thermal throttling bit and show you if any throttling has been logged. This bit doesn't get cleared until after you re-boot.
 
Yeah it was stock HSF, but it was probably not even placed properly because the hsf was fairly cool to the touch no matter how much of an OC I had.

I have my e6600 at 3393 mhz running prime 95 at 64C (max) right now. yay
I thought there was a serious cap for my cpu at about 3.2 ghz for stability. Turns out it was probably the pc800 ram I was using before.

The thermal status thing for real temp is pretty cool. They should make one for video cards. I used CCC to automatically OC my video card and it completely crashes in bioshock when I get to the cut scenes. Looks like it was too aggressive. I assumed that an OCing tool that comes with drivers would be conservative by nature.
 
WHY ON EARTH WOULD ANYBODY OC WITH THE STOCK HSF???

Good grief people.
 
Brahmzy said:
WHY ON EARTH WOULD ANYBODY OC WITH THE STOCK HSF???

Good grief people.
Click to expand...

There is no magical reason why you can't or shouldn't overclock with the stock heatsink.

Your temps will be higher, and you won't be able to overclock as far; that is obvious.

But so long as you are still within a reasonable temperature range, why not?

I had my Q6600 at 3.2 on the stock heatsink and never got less than 15C to TjMax under prime, which gave me a very good margin during real-world tasks.
 
Were you running the stock HSF on that thing? No wonder the temps were through the roof.
Click to expand...

There is no magical reason why you can't or shouldn't overclock with the stock heatsink.
Click to expand...

Agreed. I have my E6600 overclocked to 3.15ghz and I am using the stock heatsink. My load temps are always <65c (ambient temp in my room is 68f). Overclocking on a stock heatsink is just fine. Sure you won't be able to get really high overclocks, but if you just do moderate overclocking (like I do) then the stock heatsink does just fine.
 
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