MSI z690-a pro wifi + 12900kF + ddr5 + kraken x73 360mm cooler, high temps? bios settings? Fails after 5 hours p95 blend

[markm75156302e0]

Im using this combo with the ram being: CORSAIR Vengeance DDR5 32GB (2x16GB) DDR5 5200 (PC5-41600) C40 1.25V (32gb total), ‎CMK32GX5M2B5200C40

I have the lga 1700 bracket, everything is tight, cpu was done two different times with two different pastes/methods, same results. 2nd time now with arctic mx5 and did the spatula spread method.
Pump is running near 2800, cooler fans at their max rpm (2000ish).

In the bios i have only changed the P core and E core values.. set P to51x on all of them, set E to 39x, set the ring to 39x, set avx to -2.. set voltage to 1.30, LLC to 2.
I didnt turn off anything else or change other settings.. let turbo i think it is, to auto etc. Didnt set SA or Dram voltages, left on auto, set ram to XMP and auto on frequency (i think gear 2), 5200mhz.

All that said, p95 blend will fail after 5 hours. temps still randomly spike to 100c on 2 cores, though most of the time its around 87C.. if i do cinebench it spikes to round 100c again, usually avg around 89c.. score ~26,700, package load seems to avg 235-285 during cinebench, however i think it spiked to 350 at one point.. its nowhere near these wattage with P95 blend though

I'd have like to have thought the voltages are too high for this 360mm x 3 cooler, but i've seen 1.35 mentioned with similar configs and 95c, so unsure.

Any thoughts or suggestions, or maybe i need to tweak some bios settings.. for now i've lowered the ram to 4800 and i'm retesting blend to see why it errored at 1.30.
I ran into this with the 10900k with this same cooler, so im thinking worst case i try another brand? (suggestions?).. i had to delid the 10900k, then my worst temps were 89-92c.

I might redo things after doing the washer mod next

 

[markm75156302e0]

So i had about 10 hours of successful prime95 blend with avx2.. max temp 94c during the period (side of case off, otherwise would have been 2-4c higher i think):
This all post washer mod.

summary of settings/results:
xmp with vddq at 1.35
ram volts at 1.35
ram speed on auto but at its 5200 mhz

Ratios 5.1/3.9/3.9
Offset mode negative and 0.030
Cooler set to "boxed" 241watt mode

Gaming max temp (MSFS/vr) : 76C (case panel off)
P95 blend 94c 10 hours (i think the draw was something around 1.2v or maybe a little less)
Cinebench morning test today: 83C max temp this time, 241 watts used
OCCT small without avx was hitting around 94c i think (at least last nite)



So at this point id like to figure out a few things.
I saw some posts about folks getting under 200 watt power draw, unsure how that is achieved.

I see many posts of up to 5.4ghz and similar, i'd also want to take a shot at at least 2 cores being 5.2 and maybe the ecores at 4.0ghz ..

**i tried initially leaving everything the same and raising to 5.2 on two cores, i found the volts on loading windows were 1.42, way too high.. unsure why the voltage rose with same offsets.

I tried a higher 0.08 offset but that didnt seem to bring the under load voltage down, more like 1.3v
Confused on that part.. also confused because in the past i swear you could enter a voltage like 1.30 and then set its offset, not just have the offset, seems the bios picks its voltage on boot up, i did notice a 1.40 or similar after changing ratios, i guess that is an indicator.

 

[citay]

While i don't have a 12th gen system to play with and can't help much with how the voltages interact, and while i'm highly sceptical that it's worth overclocking this CPU (because Intel already pushed it quite far), i am missing something else here, and that is: How big is the performance improvement?

Any overclock should have one main goal, and that is a sizeable performance improvement. So this has to be somewhat demonstrated first, before you even attempt to verify the stability. Then i like to put it into context with the resulting power draw for a given task, and thus calculate the efficiency, meaning, the performance scaling. Unless your specific CPU is a very good example, then this will usually show that the OC is not really worth it with such a CPU model, because Intel chose the frequency quite aggressively already. Meaning, on the voltage-per-frequency curve, they're quite far on the right already, past the ideal point for this silicon (which is not 5+ GHz), in order to beat AMD in certain scenarios. So with an even higher VCore, the silicon quickly screams for mercy, this is why the power consumption skyrockets so quickly. Setting the power limits a certain way is not a bad idea at all, and i will suggest this reading material if you don't already know it.

I saw some posts about folks getting under 200 watt power draw, unsure how that is achieved.

Well, one of two things or a combination... lower voltages and/or lower power limits. I've seen people modify the V/F curve directly, and i've seen people use lower resulting VCore than you.
Sadly, i can't tell you anything first-hand, due to lack of 12th gen, but there is no magic involved. The voltages have to be lower or the CPU has to be power-draw-limited in some way.
It's also very possible that their specific CPU is a bit better, that's the infamous "silicon lottery".

Although the real Silicon Lottery shop, where they sold CPUs which were guarenteed to overclock well, has shut down recently.
With Intel consistently going to the limit and above already with their top CPU models, there is nothing they could further select for their shop:



Again, the main criteria has to be the performance improvement. You will find that this probably doesn't come out too well. It would likely be more beneficial to concentrate on the RAM instead.
Especially games really tend to benefit from a better RAM performance.

 

[cmarlow139157602e2]

I know this is a late response but I think you are lacking air flow big time. DDR5 on almost any overclock creates alot of additional heat. Also i’m not sure why you would overclock a 12900kf when they are so wicked fast anyhow. If its for games than it wont help much. Gameboost is much better at managing cpu cores and speeds than a fixed overclock anyhow.

 

[Alan J T]

I know this is a late response but I think you are lacking air flow big time. DDR5 on almost any overclock creates alot of additional heat. Also i’m not sure why you would overclock a 12900kf when they are so wicked fast anyhow. If its for games than it wont help much. Gameboost is much better at managing cpu cores and speeds than a fixed overclock anyhow.

>>Please read and comply with the Forum Rules.<<

 

[cmarlow139157602e2]

>>Please read and comply with the Forum Rules.<<

Why was my post blocked?

 

[Nichrome]

Why was my post blocked?

Read the forum rules again, that you supposedly read already and agreed to follow. That will answer your question.