F5F Stay Refreshed Power Users Overclocking This new i9-9900 model does not exceed high temperatures before throttling occurs.

This new i9-9900 model does not exceed high temperatures before throttling occurs.

This new i9-9900 model does not exceed high temperatures before throttling occurs.

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Fuzy_89
Member
50
10-17-2025, 05:02 PM
#1
Hello everyone,
I completed setting up my new computer recently and tested it in Prime95. The specs are as follows: CPU i9-9900k, clock 4696MHz, power consumption 124W, maximum temperature across all cores at 63 degrees. The cooler is a Noctua NH-D15, the motherboard ASRock Z390 Taichi Ultimate, the GPU RTX 2080 Super, and the power supply Seasonic FOCUS Plus 750 Gold. I think the thermal throttle protection might be too strict; I’m okay with it reaching up to 80 degrees. Is there a way to adjust the margins for thermal throttling? I’m aware these settings aren’t giving me great overclock potential, but they’re quite conservative. EDIT: Added parts information.
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Fuzy_89
10-17-2025, 05:02 PM #1

Hello everyone,
I completed setting up my new computer recently and tested it in Prime95. The specs are as follows: CPU i9-9900k, clock 4696MHz, power consumption 124W, maximum temperature across all cores at 63 degrees. The cooler is a Noctua NH-D15, the motherboard ASRock Z390 Taichi Ultimate, the GPU RTX 2080 Super, and the power supply Seasonic FOCUS Plus 750 Gold. I think the thermal throttle protection might be too strict; I’m okay with it reaching up to 80 degrees. Is there a way to adjust the margins for thermal throttling? I’m aware these settings aren’t giving me great overclock potential, but they’re quite conservative. EDIT: Added parts information.

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3Edge
Senior Member
718
10-17-2025, 05:02 PM
#2
Do you know, as Phaaze88 mentioned earlier, that the 47 multiplier serves as the default boost clock for all cores on an i9 9900K? Based on what you've shared, you're getting the standard boost clocks, and everything appears to be functioning correctly according to your description.
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3Edge
10-17-2025, 05:02 PM #2

Do you know, as Phaaze88 mentioned earlier, that the 47 multiplier serves as the default boost clock for all cores on an i9 9900K? Based on what you've shared, you're getting the standard boost clocks, and everything appears to be functioning correctly according to your description.

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b4nife
Member
59
10-17-2025, 05:02 PM
#3
I think it might be power throttling; the default power levels on the motherboard are probably too high. The 9900K isn't just overheating—it's also consuming a lot of power. It could be related to the advanced CPU power management settings in BIOS. You'll have to adjust those limits yourself.
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b4nife
10-17-2025, 05:02 PM #3

I think it might be power throttling; the default power levels on the motherboard are probably too high. The 9900K isn't just overheating—it's also consuming a lot of power. It could be related to the advanced CPU power management settings in BIOS. You'll have to adjust those limits yourself.

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DreamDragon
Member
201
10-17-2025, 05:02 PM
#4
I last worked with these items about eight years ago. A lot remains unchanged, yet certain aspects feel quite different. I'll update when I've learned more about power throttling and made some adjustments.
I previously used the program Throttlestop; it ran at 150W with temperatures close to 80 degrees, though the multiplier stayed at 47.
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DreamDragon
10-17-2025, 05:02 PM #4

I last worked with these items about eight years ago. A lot remains unchanged, yet certain aspects feel quite different. I'll update when I've learned more about power throttling and made some adjustments.
I previously used the program Throttlestop; it ran at 150W with temperatures close to 80 degrees, though the multiplier stayed at 47.

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henrikre
Member
220
10-17-2025, 05:02 PM
#5
1)4.7ghz is the standard boost setting for all cores on that CPU. Are you trying to reach 5.0ghz using Multi-Core/All-Core Enhancement in the BIOS?
Sorry, but that would generate excessive heat for a D15. This requires liquid cooling.
The D15 can manage the 9900K at default configurations, that's roughly all it needs.
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henrikre
10-17-2025, 05:02 PM #5

1)4.7ghz is the standard boost setting for all cores on that CPU. Are you trying to reach 5.0ghz using Multi-Core/All-Core Enhancement in the BIOS?
Sorry, but that would generate excessive heat for a D15. This requires liquid cooling.
The D15 can manage the 9900K at default configurations, that's roughly all it needs.

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xAPPLExPIEx
Senior Member
657
10-17-2025, 05:02 PM
#6
I'm just experimenting with this because I achieved about 60 degrees at a multiplier of 47. When not under load, it seems to hover around 48 at a multiplier of 47. Is the gap between 47 and 48 really more than 20 degrees when under load? The case cooling uses five 120mm fans.
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xAPPLExPIEx
10-17-2025, 05:02 PM #6

I'm just experimenting with this because I achieved about 60 degrees at a multiplier of 47. When not under load, it seems to hover around 48 at a multiplier of 47. Is the gap between 47 and 48 really more than 20 degrees when under load? The case cooling uses five 120mm fans.

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firstdwarf
Member
214
10-17-2025, 05:02 PM
#7
What motherboard?
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firstdwarf
10-17-2025, 05:02 PM #7

What motherboard?

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BramOnTheMove
Member
64
10-17-2025, 05:02 PM
#8
ASRock Z390 Taichi Ultimate stands out with its unique design.
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BramOnTheMove
10-17-2025, 05:02 PM #8

ASRock Z390 Taichi Ultimate stands out with its unique design.

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FrostShadow28
Member
83
10-17-2025, 05:02 PM
#9
Plenty of good enough is sufficient.
Note that signatures aren't helpful here; they aren't visible on many mobile devices.
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FrostShadow28
10-17-2025, 05:02 PM #9

Plenty of good enough is sufficient.
Note that signatures aren't helpful here; they aren't visible on many mobile devices.

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Flames4Evr
Junior Member
14
10-17-2025, 05:02 PM
#10
Fair enough, I thought they might have worked because I receive them on both my phone and tablet (both Android, so I wouldn't know about iOS). In that case, I'll just edit the original topic.
Do you know what adjustments could help increase the multiplier? It seems to be limited somewhere. I can get 125W or 150W depending on the test, but the multiplier remains unchanged.
I'm still looking into it, but any tips would be really helpful.
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Flames4Evr
10-17-2025, 05:02 PM #10

Fair enough, I thought they might have worked because I receive them on both my phone and tablet (both Android, so I wouldn't know about iOS). In that case, I'll just edit the original topic.
Do you know what adjustments could help increase the multiplier? It seems to be limited somewhere. I can get 125W or 150W depending on the test, but the multiplier remains unchanged.
I'm still looking into it, but any tips would be really helpful.

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