Sudden 80% CPU benchmark performance loss, please help :/ Solved!

Mr_Ghost

Junior Member
Apr 27, 2018
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https://www.dropbox.com/s/hrcjzbw9hlq0ea6/Benchmark.png?dl=0
In the above screenshot are benchmarks for my CPU, right is from 6 April and left is from today. As you can see, there's been a sudden 80% decrease in benchmark performance.

Over the past two days my computer started running running the CPU at 100% during basic tasks like watching YouTube videos or pretty much anything else. And otherwise hovers around 30 to 50% use when nothing is going on.

At first I thought I may have gotten a virus, and scanned my PC with Kaspersky, Superantispyware and Anti-Malware Bytes, nothing came up.

I tinkered with the bios, and reset everything to default, and still nothing.

Here is a open hardware report : https://www.dropbox.com/s/r9qzkbyudxqhrvg/report AH.t...

The CPU runs roughly 4°C lower than a what it did previously, and draws very little power. The CPU fan which has previously always ran at a solid 2K RPM is now hovering around 1.4 K, this has never happened before.

The computer is pretty old by now, soon to be five years old, so perhaps hardware failure is to blame, though I'm not certain how to confirm this.

If anyone has an idea for how to fix this, or what might even be the cause, I would very much appreciate,

PS if you need any additional information, don't hesitate asking.
 
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esquared

Forum Director & Omnipotent Overlord
Forum Director
Oct 8, 2000
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You're linking from a censored site for that screenshot.
You need to find another site to host that.
 

mikeymikec

Lifer
May 19, 2011
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Your hardware is not old, so don't think that this is a symptom of age.

Can you confirm with say CPU-Z that your processor clock speed is the figure it ought to be, while giving it a job to do to keep it sufficiently busy?

That processor really shouldn't be pushing a CPU fan to ~2000 RPM. I would have thought that the heatsink wasn't properly installed if it wasn't for you saying that the processor is running cooler than usual. What's the temperature of the room the computer is in?
 

Mr_Ghost

Junior Member
Apr 27, 2018
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Can you confirm with say CPU-Z that your processor clock speed is the figure it ought to be, while giving it a job to do to keep it sufficiently busy?

That processor really shouldn't be pushing a CPU fan to ~2000 RPM. I would have thought that the heatsink wasn't properly installed if it wasn't for you saying that the processor is running cooler than usual. What's the temperature of the room the computer is in?

I updated the benchmark screenshot to dropbox, it should show up now


https://www.dropbox.com/s/ac89o6siw5rop18/Stress test.png?dl=0
Here's what CPUZ and Open Hardware Monitor look like after five minutes of stress testing with p95.

Temperatures didn't really rise that much, and power draw was still low, clock speed in CPUZ also stayed at around 0.8 GHz, very mysterious :/

And regarding the CPU fan, it's a stock Intel cooler, and it had pretty much always ran at 1800-1900 RPM previously, perhaps due to poor BIOS settings, since I'd never set up a fan curve. Just noting that it was an abnormality.

I've never had overheating problems previously. And my room is roughly 20°C.

edit: just updated my bios, it didn't seem to do much.
 
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LTC8K6

Lifer
Mar 10, 2004
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It looks like your CPU is stuck at it's minimum speed? Reported min and max speed is 800mhz. That is the reason for the performance drop. The question is now why is it stuck?

Could be a wonky power plan setting in Windows, or a BIOS CPU multiplier setting?
 
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mikeymikec

Lifer
May 19, 2011
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Check Control Panel > Power Options. You should be on the 'balanced' plan. Check the advanced settings of that plan under 'processor power management': Maximum processor state should be 100%, minimum should be 5%.
 
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Mr_Ghost

Junior Member
Apr 27, 2018
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It looks like your CPU is stuck at it's minimum speed? Reported min and max speed is 800mhz. That is the reason for the performance drop. The question is now why is it stuck?

Could be a wonky power plan setting in Windows, or a BIOS CPU multiplier setting?
Check Control Panel > Power Options. You should be on the 'balanced' plan. Check the advanced settings of that plan under 'processor power management': Maximum processor state should be 100%, minimum should be 5%.

I also wonder if the processor heatsink needs a clean-out.


Oh my gosh, after tinkering with settings and bios, updating everything to the newest version, and being in the middle of buying a new PSU, I checked the power settings plan, and for some reason The CPU Was Capped at 5% power...

Everything seems to work now, thank you so much