http://www.pcgamer.com/kaby-lake-overclocking-tested-the-quest-for-5ghz/
 
Intel has added a new feature with Kaby Lake that factors into overclocking—or rather, they brought over a feature from Broadwell-E and Xeon processors. AVX instructions can use more power and create some instability with overclocking, so Intel added an AVX offset multiplier. The values start at 0 and go down (negative), and when the CPU runs AVX instructions the multiplier will drop by the specified amount.
 
So I'm asking is it ok to run a -3 and drop 300 mhz when running these AVX stress tests because they seem to be the only thing that is causing my CPU temps to reach 85C+...

TRClark911
 
Thanks... first thing I noticed is your x52 liquid temps are much higher... near 40C?  Mine is anywhere from 28-34C I've yet to see it go higher.  

 
 
It's normally likes yours, but I was running IBT and I set Cam to be silent on both Fan and Pump speed. 
Update... I looked at the screenshots again, I did set Cam to Performance for my Fan speed. Can't remember if I left Pump speed at Performance or Silent when during those runs. I do know that there doesn't seem to be much difference in temp between silent or Performance for me. So started keeping it on Silent.
 

rgunner
Is there really much to gain by delidding the current intel CPU's, any evidence one way or the other?  Seems highly risky.

Hi rgunner, for me it was totally worth it. Before Delidding, my temp was all over the places. I was mainly in the high 60s to mid 70s on the MMO game I play. Now I'm around mid 45 to 50 in my game. I also couldn't even run Prime 95 when I was overclocked to 5ghz at 1.360 vcore. It would BSOD instantly. Now it doesn't do that, but I'm staying at 4.9ghz since gaining 100mzh more is not worth it when I have to run my vcore much higher for stability. If you get the Delidding/Relidding kit, it really makes it simple. 
 

 

evga-lover
It's normally likes yours, but I was running IBT and I set Cam to be silent on both Fan and Pump speed. 
Update... I looked at the screenshots again, I did set Cam to Performance for my Fan speed. Can't remember if I left Pump speed at Performance or Silent when during those runs. I do know that there doesn't seem to be much difference in temp between silent or Performance for me. So started keeping it on Silent.
 

Makes sense... I run my x62 at a fixed 75% fan and 100% pump.  I can barely make out the fan noise if I listen for it so that's good enough for me.... 100% fan can be heard from 10 ft away so that's a bit much.  Haven't really tried much else other than silent which runs at lower numbers.
 
Thanks for the BIOS info... will compare when I get home and run some tests.  I'm confident I can get a stable 5ghz with good temps.
 

Governator

rgunner
Is there really much to gain by delidding the current intel CPU's, any evidence one way or the other?  Seems highly risky.

Other than perhaps benchmark bragging rights I highly doubt it.

 
People have reported 5-25C drops across the board after delidding... mine was 15C or so.
 
Benchmarks don't have a thing to do with it... running at a cooler temp is the reasoning behind it.  If you hit the silicon lottery and got a cool CPU delidding might not benefit you.
 
Randomness FTW.

meanwhile i'm still waiting for my hybrid kit... DPD working hard, no updates for the past 4 days now this: http://imgur.com/YN6crg4

TRClark911
 

evga-lover
It's normally likes yours, but I was running IBT and I set Cam to be silent on both Fan and Pump speed. 
Update... I looked at the screenshots again, I did set Cam to Performance for my Fan speed. Can't remember if I left Pump speed at Performance or Silent when during those runs. I do know that there doesn't seem to be much difference in temp between silent or Performance for me. So started keeping it on Silent.
 

Makes sense... I run my x62 at a fixed 75% fan and 100% pump.  I can barely make out the fan noise if I listen for it so that's good enough for me.... 100% fan can be heard from 10 ft away so that's a bit much.  Haven't really tried much else other than silent which runs at lower numbers.
 
Thanks for the BIOS info... will compare when I get home and run some tests.  I'm confident I can get a stable 5ghz with good temps.
 

Governator

rgunner
Is there really much to gain by delidding the current intel CPU's, any evidence one way or the other?  Seems highly risky.

Other than perhaps benchmark bragging rights I highly doubt it.

 
People have reported 5-25C drops across the board after delidding... mine was 15C or so.
 
Benchmarks don't have a thing to do with it... running at a cooler temp is the reasoning behind it.  If you hit the silicon lottery and got a cool CPU delidding might not benefit you.
 
Randomness FTW.

Here's someone who basically is using your setup and results..
 
http://wccftech.com/intel...lid-performance-tests/

HeavyHemi
 
Here's someone who basically is using your setup and results..
 http://wccftech.com/intel...lid-performance-tests/

Thank you HeavyHemi!! Great reading, especially for folks that are on the fence about delidding their processor! I'm super happy with my result and I actually ordered some more liquid ultra to do the same on 3 other PCs.
 

So  4.9 @ 1.27 was good... 5.0 I kept getting BSOD until 1.345 but at that voltage it wasn't passing stress tests and the temps were going up to 90C...
 
It's actually better to run at 4.8 @ 1.22 than it is to run 4.9 @ 1.27.  I get lower temps that peaked at 80C and the system is stable...  4.9 @ 1.27 was peaking 87C.
 
Either way, from 4.2 to 4.8 or 4.9 is a good OC.... I'm done banging my head against the wall with this. 

GamerDaddy84
don't waste your money on any 3D printed tool if you have a good vice and have any sort of technical proficiency with a hammer.

Your more brave than I am. Congrat on your delid!

TRClark911
So  4.9 @ 1.27 was good... 5.0 I kept getting BSOD until 1.345 but at that voltage it wasn't passing stress tests and the temps were going up to 90C...
 
It's actually better to run at 4.8 @ 1.22 than it is to run 4.9 @ 1.27.  I get lower temps that peaked at 80C and the system is stable...  4.9 @ 1.27 was peaking 87C.
 
Either way, from 4.2 to 4.8 or 4.9 is a good OC.... I'm done banging my head against the wall with this. 

Sorry to hear about 5ghz being unstable. What were you testing with, Prime or IBT?
 
 
I'm also curious when you were peaking at 87C on 4.9ghz, were you running IBT, and what was your average temp. When I was testing at 4.9ghz with VCore set to 1.325 at Maximum on IBT for 40 minutes, my average temp was in the 70s C and it peaked at 82C with average VCore at 1.349 and a high of 1.352.
 

Finally delided my i7 7700K, the delid tool scratched the heatspreader (where it says the intel i7 writing) is that a bad sign?

GTXJackBauer

condemned5
Finally delided my i7 7700K, the delid tool scratched the heatspreader (where it says the intel i7 writing) is that a bad sign?

Might have to smooth out the surface with some grit.  There should be some videos and tutorials online on this. 

can you send me a link?
here is a picture of the damage... not sure what caused it...
http://i66.tinypic.com/33o7j7k.jpg

GTXJackBauer

condemned5

GTXJackBauer

condemned5
Finally delided my i7 7700K, the delid tool scratched the heatspreader (where it says the intel i7 writing) is that a bad sign?

Might have to smooth out the surface with some grit.  There should be some videos and tutorials online on this. 

can you send me a link?
here is a picture of the damage... not sure what caused it...
http://i66.tinypic.com/33o7j7k.jpg

It's called "Lapping".  If you're not comfortable doing it, just paste up and see your temps.  I mean you should be ok but that does seem like a pretty good scratch and can still affect your temps even after the delid.  Lapping can improve the already delided CPU, let alone make it look nice and shinny.  
 
Here's a link to what seems a nice tutorial.

Still not sure what are the steps necessary to do this exactly. Is there a video that shows this process?

GTXJackBauer

condemned5

GTXJackBauer

condemned5

GTXJackBauer

condemned5
Finally delided my i7 7700K, the delid tool scratched the heatspreader (where it says the intel i7 writing) is that a bad sign?

Might have to smooth out the surface with some grit.  There should be some videos and tutorials online on this. 

can you send me a link?
here is a picture of the damage... not sure what caused it...
http://i66.tinypic.com/33o7j7k.jpg

It's called "Lapping".  If you're not comfortable doing it, just paste up and see your temps.  I mean you should be ok but that does seem like a pretty good scratch and can still affect your temps even after the delid.  Lapping can improve the already delided CPU, let alone make it look nice and shinny.  

Here's a link to what seems a nice tutorial.

Still not sure what are the steps necessary to do this exactly. Is there a video that shows this process?

Check the link.  

Damn. Using sandpaper and water? Sounds harsh and I doubt the wording on the processor will remain on the cpu...

GTXJackBauer

condemned5
 
Damn. Using sandpaper and water? Sounds harsh and I doubt the wording on the processor will remain on the cpu...
 

Nothing will remain but in hopes of a even flat mirror finish.  You basically flatten the CPU and than polish it basically.  I mean you could do this since you already voided your warranty on the CPU with the delid unless you're worry you might ruin it some how.

Check for "Lapping a CPU" on google and the tube.  Should see some videos to get an idea.

Have any idea why this happened? Used Rockitcool's tools...

DukeCLR

condemned5

GTXJackBauer

condemned5

Damn. Using sandpaper and water? Sounds harsh and I doubt the wording on the processor will remain on the cpu...

Nothing will remain but in hopes of a even flat mirror finish.  You basically flatten the CPU and than polish it basically.  I mean you could do this since you already voided your warranty on the CPU with the delid unless you're worry you might ruin it some how.

Check for "Lapping a CPU" on google and the tube.  Should see some videos to get an idea.

Have any idea why this happened? Used Rockitcool's tools...

 
I ordered one of theses kits too and I wasn't planning on lapping my CPU, It would be interesting to know how it happened. 
 
As far as lapping goes many of the videos will have you rotate it 90 degrees the do a certain number of passes, years ago I learned that using a figure 8 pattern will accomplish the same result which is spreading out the pressure you apply.  In the middle picture of this post you can see the swirl mark from a basic lapping job I did to remove some imperfections and a Hyper 212.  http://imgur.com/a/cypGD
 

I will try to use it like normal with thermal paste. Hopefully my cpu is still okay..