F5F Stay Refreshed Power Users Overclocking this setup is running at 99°c and using 1.275v, which seems elevated for the i5 4670k.

this setup is running at 99°c and using 1.275v, which seems elevated for the i5 4670k.

this setup is running at 99°c and using 1.275v, which seems elevated for the i5 4670k.

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ChibiCat1417
Member
58
05-18-2016, 03:47 AM
#1
Hey everyone! I have a small concern...
I began overclocking my CPU and purchased a cooler for it.
But even now, I still experience spikes above 90°C when running Prime95 at 1.250V CPU core voltage... (almost reaching 100°C at 1.275V, as shown in the Hw Monitor picture).
Is this typical? Or did I install the cooler incorrectly? (I was pretty careful with the setup)
With a Vcore of 1.215, it keeps every core below 80°C, but I wanted to push it up to the 1.3 limit with the new cooler.
My system details:
Asus R9 270X
Intel i5 4670K
Alpenföhn Brocken 2
Thermaltake (630W+)
Berlin
G.Skill DDR3 8Gb PC 1333 CL9
Gigabyte GA-Z87-D3HP
Samsung SSD 750 Evo 250G
WD 1TB SATA3 WD10EZEX
Windows 10 64bit
C
ChibiCat1417
05-18-2016, 03:47 AM #1

Hey everyone! I have a small concern...
I began overclocking my CPU and purchased a cooler for it.
But even now, I still experience spikes above 90°C when running Prime95 at 1.250V CPU core voltage... (almost reaching 100°C at 1.275V, as shown in the Hw Monitor picture).
Is this typical? Or did I install the cooler incorrectly? (I was pretty careful with the setup)
With a Vcore of 1.215, it keeps every core below 80°C, but I wanted to push it up to the 1.3 limit with the new cooler.
My system details:
Asus R9 270X
Intel i5 4670K
Alpenföhn Brocken 2
Thermaltake (630W+)
Berlin
G.Skill DDR3 8Gb PC 1333 CL9
Gigabyte GA-Z87-D3HP
Samsung SSD 750 Evo 250G
WD 1TB SATA3 WD10EZEX
Windows 10 64bit

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Raphdu38
Junior Member
18
05-18-2016, 04:20 AM
#2
Elblackwoodo suggests checking the prime95 version 26.6 at the provided link. It recommends using a modest FFT setting and notes it works well without stressing cores with AVX instructions. yep you're right, it reaches a peak temperature of 67°C while others stay lower. I should test my overclock stability with smaller FFT settings. However, when I use large FFT configurations, does it really help avoid overheating? (gaming and CPU-intensive apps) You're right. Small FFT is ideal for testing CPU and cache stability. Larger or blended FFTs will assess overall CPU and RAM stability, producing more heat that might reflect real-world usage. AVX...
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Raphdu38
05-18-2016, 04:20 AM #2

Elblackwoodo suggests checking the prime95 version 26.6 at the provided link. It recommends using a modest FFT setting and notes it works well without stressing cores with AVX instructions. yep you're right, it reaches a peak temperature of 67°C while others stay lower. I should test my overclock stability with smaller FFT settings. However, when I use large FFT configurations, does it really help avoid overheating? (gaming and CPU-intensive apps) You're right. Small FFT is ideal for testing CPU and cache stability. Larger or blended FFTs will assess overall CPU and RAM stability, producing more heat that might reflect real-world usage. AVX...

D
DeDoSoccer
Junior Member
15
05-25-2016, 05:11 AM
#3
I recommend attempting the prime95 version 26.6 from the provided link. It should work well with a modest FFT configuration. This update avoids additional strain on cores that support AVX instructions.
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DeDoSoccer
05-25-2016, 05:11 AM #3

I recommend attempting the prime95 version 26.6 from the provided link. It should work well with a modest FFT configuration. This update avoids additional strain on cores that support AVX instructions.

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194
05-25-2016, 06:43 AM
#4
I recommend checking out the prime95 version 26.6 from the provided link. It works well with a modest FFT configuration and avoids extra strain on cores that support AVX instructions. This version actually improves stability compared to previous ones. I’m wondering if you’d like me to test the stability of your overclock using smaller FFT settings? Also, when I increase the FFT size in larger configurations, my system starts overheating—do you have a method to prevent that without risking damage? (gaming and CPU-intensive tasks)
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SlightlyRac00n
05-25-2016, 06:43 AM #4

I recommend checking out the prime95 version 26.6 from the provided link. It works well with a modest FFT configuration and avoids extra strain on cores that support AVX instructions. This version actually improves stability compared to previous ones. I’m wondering if you’d like me to test the stability of your overclock using smaller FFT settings? Also, when I increase the FFT size in larger configurations, my system starts overheating—do you have a method to prevent that without risking damage? (gaming and CPU-intensive tasks)

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TehStratosHD
Senior Member
492
05-28-2016, 10:57 PM
#5
Elblackwoodo suggests checking the prime95 version 26.6 from the provided link. It works well with minimal FFT settings and avoids extra strain on cores with AVX instructions. yep, that’s what you’re getting. Testing stability with smaller FFT could be useful. However, if your system overheats under larger FFT configurations, there might be a risk of you overheating intentionally while gaming or running CPU-intensive programs. Smaller FFTs are better for checking CPU and cache stability without excessive heat. AVX is not ideal here, so sticking to the recommended version helps. If your typical peak temperatures seem acceptable, you’re probably safe, but always verify thermal contact with the heatsink. The variability in chip performance makes it hard to predict exactly what will happen. Hope this clears things up.
T
TehStratosHD
05-28-2016, 10:57 PM #5

Elblackwoodo suggests checking the prime95 version 26.6 from the provided link. It works well with minimal FFT settings and avoids extra strain on cores with AVX instructions. yep, that’s what you’re getting. Testing stability with smaller FFT could be useful. However, if your system overheats under larger FFT configurations, there might be a risk of you overheating intentionally while gaming or running CPU-intensive programs. Smaller FFTs are better for checking CPU and cache stability without excessive heat. AVX is not ideal here, so sticking to the recommended version helps. If your typical peak temperatures seem acceptable, you’re probably safe, but always verify thermal contact with the heatsink. The variability in chip performance makes it hard to predict exactly what will happen. Hope this clears things up.