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post #1 of 17 (permalink) Old 07-16-2020, 01:35 AM - Thread Starter
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3700x hitting 90 and above

I just changed out my 3600 for a 3700x. With the 3600 I would idle around 35 to 40 and max load was usually 67 degrees.

Using the same cooler im hitting 85 in cinebench and going up to 92 degrees using y-cruncher. Idle is around 40 to 50. At first i was sure I didn't install enough paste, or put the cooler on wrong so I did it again and nothing changed. Is this normal? I assumed temps would be up a bit but definitely not that much. Nothing else has changed. It's behaving much like the 3600 did before i installed the noctua cooler. Bios and chipset drivers are all up to date, as well as a fresh windows install after I saw the temps.

I'm using:

Asus x570 tuf gaming plus
Noctua nh-u12s cooler
2 noctua top case fans along with 1 240mm intake and a 140mm exhaust.
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post #2 of 17 (permalink) Old 07-16-2020, 01:37 AM
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Check the CPU Core Voltage in HWInfo64 during Cinebench.

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post #3 of 17 (permalink) Old 07-16-2020, 02:00 AM
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If you are using the original fan, you might want to replace it with two faster but equally quiet fans. I use two Cougar fans on mine. The original fan is quiet buy very slow. Make sure the paste spreads evenly and covers the ihs real well.

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In gaming it has no chance vs my new 10900k @ 5400mhz and 4600c16 tweaked memory. ~35ns memorylatency.
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post #4 of 17 (permalink) Old 07-16-2020, 02:05 AM
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That's odd. I'm running a Scythe Mugen 5 on my 3700x (pbo off), which should perform about on par with the U12S, and it tops out at ~75C.

You said you did reinstall Windows already. What happens if you default the bios as well? Also try the Wraith Prism that comes with the 3700x to get a baseline. With it my 3700x topped at high 70's C with its fan running at around 2500rpm (account for different fan curves so expect a slight difference).
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post #5 of 17 (permalink) Old 07-16-2020, 02:27 AM - Thread Starter
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So I just removed the cooler and reinstalled with the noctua paste that came with the cooler instead of the arctic mx-4 I used previously. I checked the mount to make sure everything is solid.

Now its idling around 38 to 46 and hitting a high of 73 in cinebench. Y cruncher seems to push it a lot harder, so im running that now.

Would paste really make that much of a difference?
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post #6 of 17 (permalink) Old 07-16-2020, 02:28 AM - Thread Starter
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Its topping out at 84 in y cruncher as opposed to 92 or so previously. The cinebench temp of 73 I find to be acceptable. What do you guys think?
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post #7 of 17 (permalink) Old 07-16-2020, 02:29 AM - Thread Starter
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Quote: Originally Posted by rares495 View Post
Check the CPU Core Voltage in HWInfo64 during Cinebench.
Core voltage is around 1.328 at max load. I have pbo enabled.
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post #8 of 17 (permalink) Old 07-16-2020, 02:34 AM
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Quote: Originally Posted by Guizan33 View Post
Core voltage is around 1.328 at max load. I have pbo enabled.

There's your issue.


A weak cooler like the U12 won't be able to handle 1.3V on the 3700X. You should disable PBO and then the load voltage will drop to about 1.15-ish.

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post #9 of 17 (permalink) Old 07-16-2020, 02:48 AM
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Quote: Originally Posted by Guizan33 View Post
So I just removed the cooler and reinstalled with the noctua paste that came with the cooler instead of the arctic mx-4 I used previously. I checked the mount to make sure everything is solid.

Now its idling around 38 to 46 and hitting a high of 73 in cinebench. Y cruncher seems to push it a lot harder, so im running that now.

Would paste really make that much of a difference?
No, because I also use MX4. What temps do you get if you disable PBO?
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post #10 of 17 (permalink) Old 07-16-2020, 03:02 AM - Thread Starter
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[QUOTE=rares495;28539030]
Quote: Originally Posted by Guizan33 View Post
Core voltage is around 1.328 at max load. I have pbo enabled.

There's your issue. [IMG class=inlineimg]/forum/images/smilies/smile.gif[/IMG]

Wow... you were right about that.

My cinebench temp is now around 62.

Problem is that it won't boost over 3.9 ghz all core. I was getting around 4.2 before.

Single core is boosting about 100mhz higher. Close to 4.5

On cinebench, single core is about the same, multicore is WAY down... 300 points.

Is there a happy medium somewhere? I didnt have this issue with the 3600 with pbo enabled. For gaming (COD, Destiny, some other titles) what am I best off with? Temps were alot better even before turning pbo off.
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