I don’t think just saying not to use Prime 95 is a valid solution. Neither is custom voltages when the MB is applying that much at stock settings. Like I wrote before, the MB is +125mv over the VID values. 1.48 is too high.

In the newest Prime 95 version there are check boxes to disable AVX when you start the test.

I have a direct die kit on the way, but I think the auto voltages need to get sorted out. Imagine a user building their first PC with these parts. Custom tuning should not be required for stock settings...at all.

bp7178
I don’t think just saying not to use Prime 95 is a valid solution. Neither is custom voltages when the MB is applying that much at stock settings. Like I wrote before, the MB is +125mv over the VID values. 1.48 is too high.

In the newest Prime 95 version there are check boxes to disable AVX when you start the test.

I have a direct die kit on the way, but I think the auto voltages need to get sorted out. Imagine a user building their first PC with these parts. Custom tuning should not be required for stock settings...at all.

I am not disagreeing with you, quite the contrary. I actually saw over 1.5VCore on my 9900K.
 
However, it is what it is, until if and when evga decides to release a BIOS that addresses the situation.

I'll never use anything besides liquid metal TIM, ever!..TG Conductonaut dropped my cores temps 20C under load running IBT..But I'll attribute most of that to delidding my 8700K and replacing the Thermal Paste between the IHS and die with it too..Do not use on aluminum!

bob16314
I'll never use anything besides liquid metal TIM, ever!..TG Conductonaut dropped my cores temps 20C under load running IBT..But I'll attribute most of that to delidding my 8700K and replacing the Thermal Paste between the IHS and die with it too..Do not use on aluminum!

+1.

Installed the 9900KS into an Asus Maximus XI. Using all default settings. Temps are as I'd expect. That is perfectly within normal range. No thermal throttling.

This is a BIOS problem that EVGA needs to address. There NO reason that a user shouldn’t be able to plop a 9900k into a Z390 Dark and have it hammer the poor chip with voltage like that at stock settings. This experience has been very surprising considering how good the Z390 Dark was with a 8086k. The 9900ks has been another story entirely.
 
This reminded me how much I hate Asus fan control...yikes. 
 
https://imgur.com/AsSLAyK
 

I am glad to see that the voltage has been confirm that it is in the normal range and Prime95 will have the temps go higher than normal.

Put a I 9 9900 KS in Msi Ace Z390 yesterday. Running a 360 Aio ,push,pull on fans and it runs very cool with 100 percent load. 5.0 ghz 1.286 to 1.271 volts for hour . Temp. was under 55 c most of time on all cores, did see one core get  to 57 c and drop back down. Using Kingpins thermal paste. Looking forward to pushing this cpu at 5.2 Ghz 100 percent load about 65c at 1.310 volts. I did update Bios for new cpu. I bet with custom water loop 5.4 Ghz could ???

EVGATech_MattM
I am glad to see that the voltage has been confirm that it is in the normal range and Prime95 will have the temps go higher than normal.

Using a different motherboard, an Asus one is what fixed it. The screen shot in my last post was using Prime 95 Small FFT with AVX but on a Asus Maximus XI Formula with its current BIOS...EVGA Z390 Dark bios is broken. 
 
 This is while Prime 95 Small FFT with AVX is running on the same 9900ks but in a Asus MB. 
 
https://imgur.com/IIssK2X
 

 

Not good.

telehog
Put a I 9 9900 KS in Msi Ace Z390 yesterday. Running a 360 Aio ,push,pull on fans and it runs very cool with 100 percent load. 5.0 ghz 1.286 to 1.271 volts for hour . Temp. was under 55 c most of time on all cores, did see one core get  to 57 c and drop back down. Using Kingpins thermal paste. Looking forward to pushing this cpu at 5.2 Ghz 100 percent load about 65c at 1.310 volts. I did update Bios for new cpu. I bet with custom water loop 5.4 Ghz could ???

Those are great temps and you could be on a good OCing chip as well.  The 320mm AIOs are close to custom.  Really no point in spending the extra dough since it will cost much higher but all up to the user if they want to head down that route.  Yes, you might be able to get that high but it's hard to say.  I think going 5.2+ in general usually enters you in exotic cooling (LN2, etc.)