F5F Stay Refreshed Hardware Desktop Thermal throttling on the CPU happens when it reduces performance to prevent overheating.

Thermal throttling on the CPU happens when it reduces performance to prevent overheating.

Thermal throttling on the CPU happens when it reduces performance to prevent overheating.

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SushiCherry
Member
227
11-26-2025, 03:05 AM
#1
Hi All, Here are all my specs: MOBO: Asus m5A78L-M/USB3 CPU: AMD FX-8320 RAM: 16GB Kingston Fury GPU: XFX R9 290 PSU: 550W I am experiencing something that looks to be thermal throttling even though the cpu is not getting particularly hot This is a screenshot from MSI afterburner./\ This is what CPUID HWMonitor is showing me /\ When playing games (BattleField 4) it has a similar outcome in that the temps dip but on BF4 the CPU usage also dips. To stress test the CPU i am using Prime95 which i think is why the usage stays at 100 throughout even though the temps would indicate that it is fluctuating Any help on this would be appreciated.
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SushiCherry
11-26-2025, 03:05 AM #1

Hi All, Here are all my specs: MOBO: Asus m5A78L-M/USB3 CPU: AMD FX-8320 RAM: 16GB Kingston Fury GPU: XFX R9 290 PSU: 550W I am experiencing something that looks to be thermal throttling even though the cpu is not getting particularly hot This is a screenshot from MSI afterburner./\ This is what CPUID HWMonitor is showing me /\ When playing games (BattleField 4) it has a similar outcome in that the temps dip but on BF4 the CPU usage also dips. To stress test the CPU i am using Prime95 which i think is why the usage stays at 100 throughout even though the temps would indicate that it is fluctuating Any help on this would be appreciated.

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Hynelhu
Member
114
11-26-2025, 04:38 AM
#2
Consider adjusting the manual settings in the BIOS, though it's uncertain—could be a possibility but who knows?
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Hynelhu
11-26-2025, 04:38 AM #2

Consider adjusting the manual settings in the BIOS, though it's uncertain—could be a possibility but who knows?

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MrAsePlow
Member
52
12-06-2025, 03:09 PM
#3
It suggests the system is likely throttling even when showing signs of thermal throttling. With a base clock of 3.5 and max boost of 4.0, speeds should align with typical usage. Operating below 100% during gaming is expected, as heavy workloads aren't present.
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MrAsePlow
12-06-2025, 03:09 PM #3

It suggests the system is likely throttling even when showing signs of thermal throttling. With a base clock of 3.5 and max boost of 4.0, speeds should align with typical usage. Operating below 100% during gaming is expected, as heavy workloads aren't present.

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ZeR0iGniTe
Junior Member
27
12-13-2025, 04:58 AM
#4
While gaming with the task manager active, I notice the CPU usage stays around 80% (FPS near 120). Occasionally the FPS drops to about 50 and CPU usage falls to around 40% for a short time—this happens even when I haven’t interacted with the game, so it’s not caused by in-game activity. There aren’t noticeable drops in GPU temperatures or usage, which makes me suspect the issue isn’t related to GPU performance. It might be connected to insufficient power delivery to the CPU. I have a four-pin connector in the motherboard, but my PSU uses a different four-pin cable, which I assume would work better if I had a more suitable one.
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ZeR0iGniTe
12-13-2025, 04:58 AM #4

While gaming with the task manager active, I notice the CPU usage stays around 80% (FPS near 120). Occasionally the FPS drops to about 50 and CPU usage falls to around 40% for a short time—this happens even when I haven’t interacted with the game, so it’s not caused by in-game activity. There aren’t noticeable drops in GPU temperatures or usage, which makes me suspect the issue isn’t related to GPU performance. It might be connected to insufficient power delivery to the CPU. I have a four-pin connector in the motherboard, but my PSU uses a different four-pin cable, which I assume would work better if I had a more suitable one.

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MythicalPotato
Junior Member
22
12-18-2025, 05:47 AM
#5
I believe I'll give it a shot, since that's the only thing I haven't tried yet.
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MythicalPotato
12-18-2025, 05:47 AM #5

I believe I'll give it a shot, since that's the only thing I haven't tried yet.

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Matke04
Posting Freak
825
12-19-2025, 06:50 AM
#6
I don’t recommend exceeding 1.6v because it could damage your CPU if you go too high. I use 45nm cores and they’re very reliable, so I can actually run at 2v without harming them. But if you add any stress, I’m worried it might fail, so be mindful of the voltage.
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Matke04
12-19-2025, 06:50 AM #6

I don’t recommend exceeding 1.6v because it could damage your CPU if you go too high. I use 45nm cores and they’re very reliable, so I can actually run at 2v without harming them. But if you add any stress, I’m worried it might fail, so be mindful of the voltage.

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Sertero28
Senior Member
589
12-19-2025, 10:07 AM
#7
Hey, you should really think about the voltage levels. 1.6v on an FX chip is pretty extreme, and the board doesn’t reach that much anyway. Keep talking about 2v—you might end up damaging something important.
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Sertero28
12-19-2025, 10:07 AM #7

Hey, you should really think about the voltage levels. 1.6v on an FX chip is pretty extreme, and the board doesn’t reach that much anyway. Keep talking about 2v—you might end up damaging something important.

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Cheif_Skied
Junior Member
23
12-19-2025, 04:04 PM
#8
I can handle 2v, but that doesn't mean I recommend it or even plan to push 2v on my e6700. Three times failed attempts and a boot caused by something unexpected mean I'm cautious. So 1.5v seems more sensible. If you have a lower-end board, it should be fine since they rarely reach that level. My G31M S2C only reaches 1.6v, not close to the limits for my 45nm process, so I expect the OP board will likely support a boost of around +200mV or less because it's designed for lower power.
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Cheif_Skied
12-19-2025, 04:04 PM #8

I can handle 2v, but that doesn't mean I recommend it or even plan to push 2v on my e6700. Three times failed attempts and a boot caused by something unexpected mean I'm cautious. So 1.5v seems more sensible. If you have a lower-end board, it should be fine since they rarely reach that level. My G31M S2C only reaches 1.6v, not close to the limits for my 45nm process, so I expect the OP board will likely support a boost of around +200mV or less because it's designed for lower power.

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xAura9
Junior Member
6
12-22-2025, 07:52 AM
#9
The FX-9590 operates around 1.5 volts, relying on robust liquid cooling to manage its heat. With a temperature of over 60°C and a thermal cap of 70°C, it shows limited margin. Compared to Intel chips, the thermal constraints are tighter, and AMD's 45nm process isn't on the same scale.
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xAura9
12-22-2025, 07:52 AM #9

The FX-9590 operates around 1.5 volts, relying on robust liquid cooling to manage its heat. With a temperature of over 60°C and a thermal cap of 70°C, it shows limited margin. Compared to Intel chips, the thermal constraints are tighter, and AMD's 45nm process isn't on the same scale.

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lordcrafter1
Junior Member
16
12-22-2025, 08:41 AM
#10
Seems like having tough hardware comes with its own set of challenges. I can push two times my capacity if needed, and my processor stays alive even with heavy use. But once you get used to it, you start ignoring the limits and thinking it’s fine to run beyond safe levels. Yes, I managed to boot two times on a cooler with ambient cooling, hitting around 4.6GHz. That’s way more than what most CPUs can handle at safe voltages, especially with modern designs. If I put stress on it, it would definitely fail. Even with a newer chip, I’d probably end up killing it, because I’ve gotten so used to bending the hardware. If someone gave me a Westmere chip, I’d still risk damaging it—32nm is pushing it.
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lordcrafter1
12-22-2025, 08:41 AM #10

Seems like having tough hardware comes with its own set of challenges. I can push two times my capacity if needed, and my processor stays alive even with heavy use. But once you get used to it, you start ignoring the limits and thinking it’s fine to run beyond safe levels. Yes, I managed to boot two times on a cooler with ambient cooling, hitting around 4.6GHz. That’s way more than what most CPUs can handle at safe voltages, especially with modern designs. If I put stress on it, it would definitely fail. Even with a newer chip, I’d probably end up killing it, because I’ve gotten so used to bending the hardware. If someone gave me a Westmere chip, I’d still risk damaging it—32nm is pushing it.

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