9900k Help / RMA?

[OhNoItsApollo]

Long Long process short story: I have been having some problems with my 9900k, with Overclocking (first timer) and temps (240mm AIO).

I want to make a first time custom loop sometime in the next few months, potentially. 

But I need help with my current cooling solution, the overclock, and the potential of returning the parts tomorrow; as it is the last day I can go in and RMA both the CPU and MOBO for direct replacements or store credit.

 

1st.) Prime 95 has killed any OC I have thrown at it, aside from like 1.1v @4.6ghz with temps at like 99 throttling. 

 

2nd.) Ive gotten 4.9ghz & 5.0 ghz stable, but at 1.2v @4.8ghz Ive gotten the only temp range that I am wanting to stick to. Here are those results from my reddit post:

1.2v @ 4.8ghz - AVX offset @3 - LLC @5 - 45 Cache - XMP 1 - VCCIO @1v - System Agent @1.1v. Im running stable on real bench 83/84 degree temps - Aida64 full load with AVX on im sitting at about 80/81(ie: 4.5ghz because of offset) and without AVX on im sitting at 79/80 (Full 4.8ghz). FPU only hitting a max of 93 but settled to 91. Cinebench capping out at 83-84. 

 

3rd.) A lot of the feedback I have received so far is that the issue is potentially the cooler? But I think its the chip maybe, i dont know. The cooler seems to be working fine. I just recently upgraded from a 6700k, which yes I know the 9900k is a completely different beast with thermal monstrosity, but the cooler I know is working fine. Yet, I've started to doubt that with all the outside thoughts on it. 

 

4th.) The reason I think it is the chip is that now, turning my OC off with just XMP on I am getting ridiculous temps. Cinebench is spooling up to 91-93. CPUZ is telling me voltage is at 1.234v (after the .05 v droop I think I have), this is with the cpu staying at 4.7 ghz. 15 seconds into Aida is sending me to the upper 90 degrees & 1.288-1.305v (auto LLC is going to 2). And then it drops down to 4.1ghz to keep temps at the 70 degree @ 1.1v after droop. (This is with everything set to Auto, but Asus multicore Disabled. Enabled yielded a few more degrees)(XMP set to auto keeps cinebench temps down to 88) Do I just have something really wrong in the bios with the OC turned off that I'm not realizing?

 

I have gotten the best results temp wise from my 4.8ghz OC. 4.7 Was a little lower as well, but 4.8 yielded temps that were acceptable. I am getting the lowest boot temps, stress test temps, everything with the 4.8 OC. 

 

What do I do? I am willing to work with the OC all night, but I do need to decide what to do. The chip itself seems decent on an OC standpoint. I got 5ghz running at I think 1.28v. Temps were just 10 degrees or so higher than 4.8ghz. 

 

Also it looks like my idea Vdroop is about .046 ( 1.2v in bios, 1.154 under load) (LLC @ 5).

Ask away I'll be very responsive so I can hopefully get some insight on what to do!

 

9900k

Asus Rog Strix Gaming -E z390

32gb Ballistix 3200mhz ram (dual channel)

Corsair h100i v2 240mm AIO

 

 

[xg32]

40 minutes ago, OhNoItsApollo said:

.

 

a couple of things that sticks out, the mobo vrm is kinda meh, so any 135w+ load (especially in prime, just don't use it) without airflow  is gonna put the vrm over 100C creating possibile stability issues, this is actually what i'm worried about the most.

 

the h100i is barely enough for the 9900k. I'd guess 1.25v 4,9 (non-avx) is a sweet spot.

 

Prime is overkill on heat, do OCCT for stability, spam cinbenech R20 (5-10 runs in a row)  for real world workload temps  

 

 

 

[Turtle Rig]

10 minutes ago, xg32 said:

a couple of things that sticks out, the mobo vrm is kinda meh, so any 135w+ load (especially in prime, just don't use it) without airflow  is gonna put the vrm over 100C creating possibile stability issues, this is actually what i'm worried about the most.

 

the h100i is barely enough for the 9900k. I'd guess 1.25 4,9 (non-avx) is a sweet spot.

 

Prime is overkill on heat, do OCCT for stability, spam cinbenech R20 (5-10 runs in a row)  for real world workload temps  

 

 

 

Should have gotten a Gigabyte mobo as those VRMs on that ASUS board is not that good.

[jones177]

I hope you were using Prime95 v26.6. 

later versions will cook your CPU.

 

 

[OhNoItsApollo]

38 minutes ago, Turtle Rig said:

Should have gotten a Gigabyte mobo as those VRMs on that ASUS board is not that good.

I’m not going for a extreme OC personally. The board seems to generally have had success with ghz without issues

[OhNoItsApollo]

27 minutes ago, jones177 said:

I hope you were using Prime95 v26.6. 

later versions will cook your CPU.

 

 

I have AVX turned off because I’m using a newer version 

[OhNoItsApollo]

1 hour ago, xg32 said:

a couple of things that sticks out, the mobo vrm is kinda meh, so any 135w+ load (especially in prime, just don't use it) without airflow  is gonna put the vrm over 100C creating possibile stability issues, this is actually what i'm worried about the most.

 

the h100i is barely enough for the 9900k. I'd guess 1.25v 4,9 (non-avx) is a sweet spot.

 

Prime is overkill on heat, do OCCT for stability, spam cinbenech R20 (5-10 runs in a row)  for real world workload temps  

 

 

 

So far from all my testing my vrms haven’t gone anything over 50C. I got 4.9 stable at 1.25 and 5 at 1.28. They both got the same temps, with the 1.28v maybe 2-3 degrees higher. Both were in the low 90’s though.  Will do that as soon as I’m home. But do you think rma ing is worth it then? 

[xg32]

7 minutes ago, OhNoItsApollo said:

So far from all my testing my vrms haven’t gone anything over 50C. I got 4.9 stable at 1.25 and 5 at 1.28. They both got the same temps, with the 1.28v maybe 2-3 degrees higher. Both were in the low 90’s though.  Will do that as soon as I’m home. But do you think rma ing is worth it then? 

def not worth RMAing, it's a difference of 100mhz. I doubt you'll get anywhere near the prime temps doing anything else, my gaming temps are like 75C in destiny/division 2, 85C on cinebench, it'd probably hit 100C too on a hot day with prime small fft, completely unrealistic load.