High Temps? Normal or something wrong

[Kevlar1028]

HI all, just doing some tests on a relatively new build. I have an Intel 12900k being cooled by a Lian Li Galahad 360, Z690, ROG 3090OC, 6600MHZ DDR5, and 9 case fans. Not sure if theres too much negative fan pressure in my system (or if the airflow is in the wrong direction) or if these temps are just too high in general. But when running a single pass on Cinebench my temps on the cpu hit 96^oC on one core, if I let it go longer they will hit or exceed 100^oC. I ran Prime95 and got a blue screen. Not sure what im doing wrong here but some help would be greatly appreciated!

[Shimejii]

Yeah seems about right for a 12900k. These are really hot chips so you pretty much have to do some voltage and bios tuning if you want to get the outright most out of them.

 

Regarding fans, you should probably do side+Bottom as intakes, and the top as exhaust.

 

Prime95 is a useless benchmark IMO. Its generally way more heat that you will ever actually see.

 

Side note im pretty suprised your 12900k actually let you run that ram at 6600, ive seen quite a lot of 12th gen hardlocked at 6000ish before the IMC basically had instability issues.

[Kevlar1028]

5 minutes ago, Shimejii said:

Yeah seems about right for a 12900k. These are really hot chips so you pretty much have to do some voltage and bios tuning if you want to get the outright most out of them.

 

Regarding fans, you should probably do side+Bottom as intakes, and the top as exhaust.

 

Prime95 is a useless benchmark IMO. Its generally way more heat that you will ever actually see.

 

Side note im pretty suprised your 12900k actually let you run that ram at 6600, ive seen quite a lot of 12th gen hardlocked at 6000ish before the IMC basically had instability issues.

welll according to asus's website for my mobo these are supposed to be able to run at 6600. just got them today and they are extremely unstable at 6600 might just have to run these at stock speeds unless you can suggest me running them at something else. My PC did not like XMP XD

[Mark Kaine]

it looks like you have a lot of air going into the case and not much out, thats the main issue i think. and no rear exhaust? 

 

 you also dont really have front intakes, more like side intakes(?)... (im not even sure, i only use noctua fans, so this whole setup is a bit confusing to me lol) but none of this is ideal.

 

tldr: you have to think about air cooling like a wind tunnel,  air in and out *fast*

 

 

is your case setup like a wind tunnel?  no

[Kevlar1028]

7 minutes ago, Mark Kaine said:

it looks like you have a lot of air going into the case and not much out, thats the main issue. and now rear exhaust? 

 

 you also dont really have front intakes, more like side intakes... none of this is ideal.

right now they are configured so that the aio is getting "fresh air" so they are the intakes. and the rest are exhaust. main reason i did this is because for some reason when i had the fans all flipped (bottom and back intake and top exhaust) the bottom fans made a louder noise i believe due to the filter.

[RONOTHAN##]

10 minutes ago, Kevlar1028 said:

welll according to asus's website for my mobo these are supposed to be able to run at 6600. just got them today and they are extremely unstable at 6600 might just have to run these at stock speeds unless you can suggest me running them at something else. My PC did not like XMP XD

Motherboard manufacturers like to exaggerate what the memory frequency capabilities of their boards, mostly for advertising reasons. 8 layer 4 DIMM boards like that one with Alder Lake CPUs have the max memory speed more like 6200 unless you win the silicon lottery. You might get higher frequency if you mess with some memory controller voltages but don't expect to get much higher than 6200 without a lot of effort.