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    Help with overclocking 12600k, it doesn't want to stay at oc speed

    Run Intel XTU and use it's monitoring since it'll tell you in real-time what is throttling. You're likely thermal or power throttling. You can then address the issue based on knowing what's actually throttling your speed.
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    I did, but I don't think most customers have enough samples or do the stress testing to know this is happening. That's the bigger reason I raised this. For anyone wondering, the two unstable CPUs were SP89 & SP87 while the stable ones were SP85 & SP94. I don't think that SP rating is entirely an...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    Just wanted to add that I've now worked on 4x different 12900K(S) systems and I think there are some bad Intel CPUs out there as well. I've seen 2 out of 4 CPUs thermal throttle and power throttle at stock speeds while the others can be overclocked with no throttling. I think this comes down to...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    That hasn't been my experience. Only AiOs that don't mount properly are struggling to cool a 12900K. Also, there's a massive difference between the power draw of a 12900K running at Intel intended limits vs one that is overclocked and ignoring limits. My 12900K runs very cool (40-60℃) when ran...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    No. 1151 was shorter and 1700 taller.
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    It definitely wasn't thermal paste application. I wrote in this thread about how I had applied thermal paste multiple times in different ways with the Corsair AiO and the results were hopeless. Switching to the Asus AiO resulted in a massive drop in temperatures with the same thermal paste...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    I was able to run reasonably cool while x265 ffmpeg rendering at 79C with stock clocks and even cooler with an undervolt (70C-75C) with the Asus AiO. With that said, I use my PC for both Gaming and Rendering so I wanted to go a little faster. I need the machine to be stable for both though and...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    I went with an Asus ROG Ryujin II 360 because I talked with people who have it and said it was working well for them, but I'd imagine that other Asus AiOs that were made for LGA 1700 would also work well.
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    Yes, the Asus LGA 1700 ones come with all the proper mounting hardware and just works. I've taken a closer look at the H150i hardware now that it's out my system and it looks like the problem might be that Corsair is sending the wrong LGA 1700 standoffs. I thought the LGA 1700 standoffs were...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    Replacing my Corsair H150i with an Asus 360mm AiO fixed my overheating issues. I could see from the thermal paste pattern when I pulled the Corsair H150i off that it wasn't fully contacting the CPU's IHS. Using a normal amount of thermal paste with the Corsair H150i had my CPU idling at 70℃ and...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    I was considering doing the same thing even though Corsair STRONGLY advises against it. I was basically thinking that I'll just be very careful and only tight the thumb-nuts down by finger and not let a screwdriver touch them. I imagine that I should be able to feel when it's tight, but Corsair...
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    My 12900K reaches 85°C during rendering at 22°C ambient temp.

    Too little pressure. I think there's a problem with the Corsair H150i coolers. I have an H150i with Corsair's LGA 1700 retrofit kit that I'm using with a 12900K and you can feel that the H150i isn't firmly fitting against the CPU. I was able to lay my case down on its side and press the cooler...
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