Maximus XI gene, 9900KS, episode 2 degradation??

[edhunterbg]

112k failed for 4 minutes. And half minute later I got thermal throttling. It seems that I dont have room for testing with this particular cpu without going for delid.

[Braegnok]

Seems your voltages are crazy high, have you checked your CPU socket for bent pins, or any damage to socket?

My i9-9900KS at default settings idle Vcore is 0.746V. And under load default settings Vcore is 1.163V. Running 3600MHz 1.45V memory.

Screen Shot default settings : https://imgur.com/a/vI5zZGf

[Falkentyne]

Seems your voltages are crazy high, have you checked your CPU socket for bent pins, or any damage to socket?

My i9-9900KS at default settings idle Vcore is 0.746V. And under load default settings Vcore is 1.163V. Running 3600MHz 1.45V memory.

Screen Shot default settings : https://imgur.com/a/vI5zZGf

That's not how you check idle VID btw. And idle vcore is irrelevant. We're talking about VID here.
To check base VID, you must disable all power saving and used a fixed voltage. Then set AC/DC Loadlines to 0.01 (SVID best case scenario), then look at the VID at idle in windows.

It's not a bent pin. That wouldn't even affect the VID reported because all CPU's are binned based on silicon quality, and each core will be programmed with an average base VID (each mulitplier from 800 mhz to 5 ghz will have its own VID, except a few intermediate ones), and the higher the base VID, the worse the silicon quality. Although in the vast majority of cases, if two processors are run at identical load voltages and loadline calibration levels and identical cooling (example: 5 ghz @ 1.30v Bios set, LLC: 5), the processor with the lower default VID usually runs hotter.

The VID on his chip at 5 ghz is equal to an 'average' 9900k sample. KS chips are supposed to be near-golden 9900k's.

[Braegnok]

My bad, wasn't trying to barge in on your conversation.

I should have used the reply with quote tab. As I was referring to context in post # 1 from OP.

[Rockford]

i strongly doubt the CPU is degrading after this short time at this voltage/heat
Don't bother RMA the CPU, its only a waste of your time
Good luck

[edhunterbg]

Most probably will return both the motherboard and the cpu... last month or two of experiments was painful for me and proving that what is advertised and reviewed by the big medias is complete bul****.
In order to have really stable 5ghz for sure:
- you must have big custom water cooling (or live in the north pole)
- have won the national lottery at least twice...
- be millionaire and order from every component at least two pieces because half of them are trash
- have too much time to loose (planned multiplied by at least 3 plus some spare weekends...)

[Rockford]

Most probably will return both the motherboard and the cpu...

Ok its your choice of course, but i am almost certain that you wont get better results with the new hardware

Make the best of what you got instead..

[Rockford]

Computer hardware electronics is physics, it meaning that it wont perform exactly the same after each new post/boot (nothing is straight in the laws of universe)
So if you manage to get a perfectly "stable" 5.0ghz one day then it can still fail within the next couple of days or weeks, especially if you push the physical hardware limitations
High LLC is never good for stable 24/7 overclocks, it only makes them wobbly
Processors are different also, someone may pull of a nice 5 ghz OC, while others dont
Knowledge and OC experience is different also, some users may pull of a 5 ghz OC, while others dont
The bottom line: Its difficult to get 100% stable OC when bashing the HW physical limitations (higher clocks need more voltage, more voltage generate more heat=higher resistance, instability)
Note: Prime95 and other stress tests, NEVER prove a OC is stable, it only prove that you passed the test that given day......

[edhunterbg]

Agree ... but. 9900KS is advertised as 5Ghz all cores right .. so it should do them out of the box .. but it does not. That is what frustrates me.

[Rockford]

ok, sorry i am not up to date with the new intel stuff

So the CPU is failing its specifications?