F5F Stay Refreshed Power Users Overclocking Is my 8700k just a weak CPU or is there another issue?

Is my 8700k just a weak CPU or is there another issue?

Is my 8700k just a weak CPU or is there another issue?

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Bolbolb
Junior Member
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1
10-05-2017, 10:29 PM
#1
Can't Even OC my 8700k to 4.6 GHz
CPU: i7-8700k
CPU Cooler: Thermalright Le Grand Macho RT
Motherboard: ASUS Prime Z370-A
My system's airflow should be fine. My RAM passed memtest86 and my CPU passes Prime95 at stock. However, as soon as I try to overclock, my temperatures soar through the roof and I always fail Prime95. Right now I have my VCore set to 1.25 and clock speed at 4.6 GHz, but it fails Prime95 at high 80s degrees. I have LLC set to level 6. Is this just a crappy CPU, or am I doing something wrong?
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B
Bolbolb
10-05-2017, 10:29 PM #1

Can't Even OC my 8700k to 4.6 GHz
CPU: i7-8700k
CPU Cooler: Thermalright Le Grand Macho RT
Motherboard: ASUS Prime Z370-A
My system's airflow should be fine. My RAM passed memtest86 and my CPU passes Prime95 at stock. However, as soon as I try to overclock, my temperatures soar through the roof and I always fail Prime95. Right now I have my VCore set to 1.25 and clock speed at 4.6 GHz, but it fails Prime95 at high 80s degrees. I have LLC set to level 6. Is this just a crappy CPU, or am I doing something wrong?

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M
MagmaSTG
Junior Member
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17
10-06-2017, 10:31 AM
#2
Reapply thermal paste and verify the heatsink is securely fastened; slight adjustments can significantly affect temperatures. If this doesn't resolve the issue, consider replacing the cooler.
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M
MagmaSTG
10-06-2017, 10:31 AM #2

Reapply thermal paste and verify the heatsink is securely fastened; slight adjustments can significantly affect temperatures. If this doesn't resolve the issue, consider replacing the cooler.

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S
Seanyboy
Junior Member
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10
10-10-2017, 03:31 PM
#3
Reapply thermal paste and verify the heatsink is securely fastened; slight adjustments can significantly affect temperatures. If this doesn't resolve the issue, consider replacing the cooler.
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S
Seanyboy
10-10-2017, 03:31 PM #3

Reapply thermal paste and verify the heatsink is securely fastened; slight adjustments can significantly affect temperatures. If this doesn't resolve the issue, consider replacing the cooler.

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P
Parkour2005
Member
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55
10-10-2017, 06:42 PM
#4
LLC level 6 is a bit too advanced for air-cooled setups. Reduce it to level 4.
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P
Parkour2005
10-10-2017, 06:42 PM #4

LLC level 6 is a bit too advanced for air-cooled setups. Reduce it to level 4.

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M
MiniSenpai
Junior Member
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13
10-13-2017, 06:59 PM
#5
Determine the maximum fixed voltage needed to maintain cooling under peak load, beginning around 1.3 and adjusting accordingly. Next, identify the highest stable frequency achievable at that voltage. Finally, calculate the appropriate offset to apply for dynamic settings.
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M
MiniSenpai
10-13-2017, 06:59 PM #5

Determine the maximum fixed voltage needed to maintain cooling under peak load, beginning around 1.3 and adjusting accordingly. Next, identify the highest stable frequency achievable at that voltage. Finally, calculate the appropriate offset to apply for dynamic settings.

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