I7 12700K temps

[Surax]

Hello there, I'm new to this forum and I recently built my first desktop computer (always used high level laptops before). Below are my complete specs:
Case: Phanteks Evolv X
MoBo: Aorus Z690 Master
CPU: I7 12700K
Ram: G.Skill Trident Z5 5600Mhz CL36 2x16GB (DDR5 Rams of course)
PSU: Seasonic TX-1000
GPU: RTX 3080Ti FE
Storage: Samsung 980 Pro 2TB + Samsung 960 Evo 2TB
Cooling: custom loop featuring a 420mm and a 280mm rads (in parallel). Only CPU has been watercooled at the moment, i'll watercool also the GPU when i have decided if i want to sell it and buy something else or not. Oh, I used the Arctic MX5 between CPU IHS and Waterblock. Also, every fan in the case is a 140mm Noctua IPPC 3000.

The fact is running cinebench ON STOCK settings I'm having temps like 73/75 degrees on a beefy custom loop (attaching photo so you can clearly see it). I want to understand if they are normal temperatures or not, since I'm not getting it. Some reviewers talks about 80 degs temps on heavily OCed 12700k, but if i set everything to 5GHz (without touching Vcore offset), i reach 85/86 degrees. Ok, the silicon lottery is a thing, but it seems a bit strange. Someone else talk about even 95 degrees on a Noctua NH-D15. So, I'm a bit confused. Can you please clarify me?

 

[Woomack]

Sometimes I don't get how others have so low temps, but often it's because they are not using FPU (AVX) tests. Many reviewers are pretty clueless but I won't comment on that.

Because of quite small dies, there is no big difference if you are using a single rad or two or more. Even single, slim 360 rad in theory handles 300W of heat. The problem is to transfer that heat fast enough from a small die. The water temperature won't be below ambient and while idle, you probably have maybe 25°C, regardless if you use 1,2,+ rads. The main advantage of having more rads is that fans can spin slower to generate less noise.

In the last few days, I was testing 12900K on a fresh build with a custom loop and thick 360 rad. Under full load, it was very close to the throttling point which is 100°C - 4.9GHz with AVX, 5.2GHz without. I could overclock it at 5.4GHz for tests but it wasn't fully stable. Slightly worse results were on 360 AIO but max OC was about the same.
I was also testing 12600K on various coolers and I can say that I like these CPUs much more because of better power/performance balance. I didn't have 12700K in my hands but it heats up slightly less than the 12900K so your temps seem pretty good.
Noctua U12A performs almost the same as NH-D15 and 12900K could reach nearly 100°C under full load, so yes, 95°C is about right for the NH-D15.

One more thing. I don't know what about now but Z690 Master on earlier BIOS was causing the CPU to run at higher temps than for example ASUS or ASRock. I have the Master in my gaming PC but I wasn't checking temps on a newer BIOS as I'm using 12600K at auto which isn't really hot, no matter what I do.

 

[Surax]

Sometimes I don't get how others have so low temps, but often it's because they are not using FPU (AVX) tests. Many reviewers are pretty clueless but I won't comment on that.

Because of quite small dies, there is no big difference if you are using a single rad or two or more. Even single, slim 360 rad in theory handles 300W of heat. The problem is to transfer that heat fast enough from a small die. The water temperature won't be below ambient and while idle, you probably have maybe 25°C, regardless if you use 1,2,+ rads. The main advantage of having more rads is that fans can spin slower to generate less noise.

In the last few days, I was testing 12900K on a fresh build with a custom loop and thick 360 rad. Under full load, it was very close to the throttling point which is 100°C - 4.9GHz with AVX, 5.2GHz without. I could overclock it at 5.4GHz for tests but it wasn't fully stable. Slightly worse results were on 360 AIO but max OC was about the same.
I was also testing 12600K on various coolers and I can say that I like these CPUs much more because of better power/performance balance. I didn't have 12700K in my hands but it heats up slightly less than the 12900K so your temps seem pretty good.
Noctua U12A performs almost the same as NH-D15 and 12900K could reach nearly 100°C under full load, so yes, 95°C is about right for the NH-D15.

One more thing. I don't know what about now but Z690 Master on earlier BIOS was causing the CPU to run at higher temps than for example ASUS or ASRock. I have the Master in my gaming PC but I wasn't checking temps on a newer BIOS as I'm using 12600K at auto which isn't really hot, no matter what I do.

First of all, thank you for the answer.
Secondly, i know having 2 rads is useless, i just wanted to make things bigger! I always dreamt about a desktop and finally i decided to save money and build a oversized loop. Since I have no experience in desktop builds (except assembling for friends, but never experimented on them), I wanted to ask and understand if temperatures were normal. I supposed the main bottleneck was the heat trasnfer between IHS and the liquid itself, and you just gave me a confirmation, thank you very much!
Talking about the Aorus master, I updated few days ago, if i'm not wrong it was the 0.8 version, or something like that, but changelog mentioned just more ddr5 stability.

 

[Woomack]

There is F8d BIOS already but I wasn't changing since F7c. There are still problems with memory above 6000, especially G.Skill. ADATA works better for me. I think that soon there will be a new microcode as MSI already released a new beta for upcoming CPUs.