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14600KF one core run very hot

T

THRESHIN

2[H]4U
Joined
Sep 29, 2002
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Not sure if I should care, system is stable and has been for months running full load.

Got a 14600KF, bios is updated and in fact was before this CPU was installed since I went from a 12600KF on the same board. updated before the swap.

I'm running on water, heat killer 4 block. No overclock or increased power. Overall the CPU is doing just fine. full load all cores are generally around 70C, blips up in to low 80s and jumps back down.

Except core #3....yes it's a P core. for some reason this single core just makes an ass of itself. Normal full load temp is more like high 80s, was constantly jumping up to 100C and throttling.

In response, I limited the boost clock for that core from 5.3 GHz down to 5.1 GHz . I didn try undervolting but I found that this was a negative impact on the CPU as a whole. Would only boost to around 5Ghz. I also lowered the throttling limit to 90C for an extra safety margin. It's better. But it still routinely hits 90 and throttles.

What do you guys think? Any advice on settings I should be looking at? I have an MSI board for what it's worth.
 
I think that is normal behavior on a leaky chip, but that's just coming from someone who doesn't really understand how all this works.

You got a firecracker core which leaks a lot and goes brrr, so windows puts the most demanding tasks on it, they get done fast, and the core gets hot. The consequence is the other cores can't or don't need to go as fast, because the processor is hot and that core is handling the most demanding tasks.

Enjoy it while it lasts?

You could try repasting (which is about the only thing that might make a difference, imo), but I don't think it will help.
 
Could be uneven contact with the heatsink. Best to remove the heatsink, clean and repaste, and try again. If you don't have a contact frame, that might help.
 
Contact frames are a must have for LGA1700 CPUs. Prevents MB flex and excellent contact with the HS every time. If you haven't played with the core levels in the mainboard you can always adjust your voltage settings. However, what I was thinking is that there's typically one core (or more) that is "preferred" because it will clock higher than the others and it's likely that one is handling all your Single Thread operations. On paper the 14600k is superior to the 12600k in efficiency, however, it can pull just as much power if not more than it's 12th gen counterparts..

Also, make sure you are running the latest microcode. That should, in theory, resolve the majority of issues that plague the 13/14th gen parts with the Vmin shift issues. Could also be a big contributor to issues there. The 14600 also suffers from Vmin shift, that the entire list of issues the higher end parts do, but usually to a lesser degree.
 
bigdogchris said:
Do you have a contact frame? It made a massive improvement for me with my 14600k. I repasted it several times and it was always hot. First try with contract frame and it fixed the issue.
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I will absolutely look into this. Thanks.

Edit: quick search and I'm sold. Not difficult to install, but needs to be done carefully. A lot of us here have done some goofy computer stuff over the years. This is nothing. Potential to dump temps down hard. I'm so in. I'll report back as to how it goes.

Any brand recommendations?

I feel like this should be another thread (and may yet be) but here's my list of stupid stuff done in the name of better computing:

Voodoo3 attached a fan, cut and attached my own ram heatsinks out of old 386 aluminum heatsinks. OC to the moon.

Built my own water block out of a bar of copper with a drill press and a Dremel.

Took the heat spreader off an opteron 165 with a razor blade (classic). Same with an Intel 6600K with a 3d printed tool.

Soldered two variable resistors and test ports to two 7900 GTOs so I could overclock them harder. Had to use a multimeter to test the voltage. They were on water. One resistor for RAM the other for GPU.
 
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Dreamerbydesign said:
YMMV on the frame. For me it did absolutely nothing. But they are cheap and easy to install, so worth a shot.
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It might not change your thermals, however, what it's supposed to do it what it does very well. It prevents your mainboard from flexing at the CPU contact points. This was more of an issue on 600 series motherboards but It certainly adds some much needed rigidity to the area around the CPU.

Have to agree with you, this may not solve his issue. But it will eliminate at least 2 potential issues from the list. Board flex and CPU contact uniformity.
 
thanks guys. hadn't followed things closely enough to be aware the the frame. It's cheap, i don't mind doing this and understand that it might or might not help. Like you guys i feel that it's at least worth a shot.

already ordered....i'll report back when i get it installed. never know, might work.
 
i completely forgot about those, didnt deal with 13/14th gen much. worst it will do is keep your board straight. worth a shot.
 
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