Interesting behavior after delidding

[H6NS]

Hello,

I'm witnessing an interesting behavior after delidding my Intel Core i7 8086K. Before delidding my CPU's all-core turbo was 4,3 GHz while having at max 95 Watts of power usage. Now when I run for example Cinebench R20, it drains about 115 Watts from the wall while the all-core turbo is now 4,6 GHz. Strangely enough, I didn't overclock it in any way.

I'm not going crazy about this, because my temps are now at max 50 °C during 100% load. But still, it is quite interesting...or not.

[Guest]

16 minutes ago, H6NS said:

Hello,

I'm witnessing an interesting behavior after delidding my Intel Core i7 8086K. Before delidding my CPU's all-core turbo was 4,3 GHz while having at max 95 Watts of power usage. Now when I run for example Cinebench R20, it drains about 115 Watts from the wall while the all-core turbo is now 4,6 GHz. Strangely enough, I didn't overclock it in any way.

I'm not going crazy about this, because my temps are now at max 50 °C during 100% load. But still, it is quite interesting...or not.

That's really nice results. Good job.

Looks like the cpu even on auto, likes them lower temps!

[H6NS]

6 minutes ago, ShrimpBrime said:

That's really nice results. Good job.

Looks like the cpu even on auto, likes them lower temps!

Do you think that it overclocked itself due to the lower temps?

[Vishera]

1 minute ago, H6NS said:

Do you think that it overclocked itself due to the lower temps?

Yes,AMD CPUs do that too.

[Kilrah]

What were the temps before the delid? Probably was throttling.

 

Mobo might have optimizations enabled by default but it could not do 4.6 all core due to temps.

[Guest]

1 minute ago, H6NS said:

Do you think that it overclocked itself due to the lower temps?

Yes of course.

 

 

[Guest]

3 minutes ago, Vishera said:

Yes,AMD CPUs do that too.

My Geothermal loop, made my 2700X on all auto, boost all core to 4300mhz at idle. Was crazy as F.

The load frequency was unchanged until raising the EDC power limit with Ryzen Master however.

[H6NS]

3 minutes ago, Kilrah said:

What were the temps before the delid? Probably was throttling.

 

Mobo might have MCE enabled by default but it could not do 4.6 all core due to temps.

The temps before delid weren't too bad - about 70 °C while running the XTU stress test and it showed no thermal throttling. When I run this test now after delid, I see that all-core turbo increased to 4,6 GHz while the temps are 50 °C at max. And I'm using an air cooler. Big one, but still just an air one.

[Kilrah]

Most likely default mobo tweaks.

When you get a K chip on a Z mobo the defaults aren't necessarily "purely stock".

 

It seems that chip with a delid overclocks well, silicon lottery says most of them will do 5.2 all core, so it might be worth having a go at overclocking

[H6NS]

18 minutes ago, Kilrah said:

Most likely default mobo tweaks.

When you get a K chip on a Z mobo the defaults aren't necessarily "purely stock".

 

It seems that chip with a delid overclocks well, silicon lottery says most of them will do 5.2 all core, so it might be worth having a go at overclocking

Maybe later, it serves me two years already and I didn't find anything in the real world that this CPU would have a problem with, even on the stock clocks. And I got it new from Amazon for 379 USD back in 2018, which wasn't so bad.

[Guest]

29 minutes ago, H6NS said:

Maybe later, it serves me two years already and I didn't find anything in the real world that this CPU would have a problem with, even on the stock clocks. And I got it new from Amazon for 379 USD back in 2018, which wasn't so bad.

The anniversary chip is hard core. It'll last you a long time. Few more years at lease. Those chips have the highest Bin of it's class.

 

You have plenty of headroom. It'll do all cores manual OC at 5ghz no problem. Since you de-lidded it, temps should be just fine.