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Question 8700k experiencing crashes during stress test – voltage concerns

Question 8700k experiencing crashes during stress test – voltage concerns

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Altijd_Scoepi
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183
05-23-2017, 06:49 AM
#1
I'm working on boosting the performance of my i7 8700K using an Asus Prime Z370 board. I've experimented with voltages between 1.31 and 1.32, testing for about 60 seconds to two minutes, but the system crashes consistently. I followed various guides and found temperatures staying around 78-80°C. Currently, I'm stress-testing with Realbench, which also causes crashes. CPU-Z indicates the core voltage falls to 1.264 during testing, while VID remains near 1.30-1.32. Could the crash be caused by the core voltage dropping too low under load? If so, what else might be contributing to this issue? I've set the LLC mode to "6" in the BIOS and am trying to identify any other factors affecting the voltage.
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Altijd_Scoepi
05-23-2017, 06:49 AM #1

I'm working on boosting the performance of my i7 8700K using an Asus Prime Z370 board. I've experimented with voltages between 1.31 and 1.32, testing for about 60 seconds to two minutes, but the system crashes consistently. I followed various guides and found temperatures staying around 78-80°C. Currently, I'm stress-testing with Realbench, which also causes crashes. CPU-Z indicates the core voltage falls to 1.264 during testing, while VID remains near 1.30-1.32. Could the crash be caused by the core voltage dropping too low under load? If so, what else might be contributing to this issue? I've set the LLC mode to "6" in the BIOS and am trying to identify any other factors affecting the voltage.

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Higgins105
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05-23-2017, 08:25 AM
#2
what's your main clock target?
it looks like it might be a PSU issue.
which PSU do you have?
if you're just aiming for 5ghz, which these voltages imply,
asus has a built-in 5ghz profile that works well with no issues.
cooler overclocking is possible, but this one is decent for an auto-overclocked setup.
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Higgins105
05-23-2017, 08:25 AM #2

what's your main clock target?
it looks like it might be a PSU issue.
which PSU do you have?
if you're just aiming for 5ghz, which these voltages imply,
asus has a built-in 5ghz profile that works well with no issues.
cooler overclocking is possible, but this one is decent for an auto-overclocked setup.

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Amegahoney
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05-23-2017, 08:44 AM
#3
I am adjusting for a shooting speed of 4.9 @ 1.31v. I increased it to 1.35 but it still crashes. Temperatures stay around the low 80s during Prime95 before failure, then it runs briefly before crashing again. I don’t think this is due to temperature problems.

I have reached stability at 4.8 with a speed of 1.295v. Temperatures are in the mid to high 70°C after an hour of stress testing on Prime95.

I use a Thermal take Smart 600w PSU and a Noctua NH-U12S cooler. I also tried the ASUS 5ghz profile, but temperatures quickly rose to 90-94°C on Prime95, so I stopped it immediately.
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Amegahoney
05-23-2017, 08:44 AM #3

I am adjusting for a shooting speed of 4.9 @ 1.31v. I increased it to 1.35 but it still crashes. Temperatures stay around the low 80s during Prime95 before failure, then it runs briefly before crashing again. I don’t think this is due to temperature problems.

I have reached stability at 4.8 with a speed of 1.295v. Temperatures are in the mid to high 70°C after an hour of stress testing on Prime95.

I use a Thermal take Smart 600w PSU and a Noctua NH-U12S cooler. I also tried the ASUS 5ghz profile, but temperatures quickly rose to 90-94°C on Prime95, so I stopped it immediately.

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t33nym1ll3r
Junior Member
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05-24-2017, 11:21 AM
#4
it seems like you're experiencing the worst overclocking performance possible
sorry about that
my setup isn't great either, but with an h150i (360mm rad) it can reach 5ghz consistently at...
i don't remember the exact voltages, but it usually works with normal ones
and it barely manages 5.2ghz even with very high voltages and still staying stable
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t33nym1ll3r
05-24-2017, 11:21 AM #4

it seems like you're experiencing the worst overclocking performance possible
sorry about that
my setup isn't great either, but with an h150i (360mm rad) it can reach 5ghz consistently at...
i don't remember the exact voltages, but it usually works with normal ones
and it barely manages 5.2ghz even with very high voltages and still staying stable

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kcaz56
Senior Member
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664
05-26-2017, 07:35 AM
#5
It's odd. I might have a poor chip. I bought a ready-made unit from NewEgg that came with this 8700k, maybe they just get cheaper chips which is why they can sell prebuilt units so cheaply? I couldn't build it for most of the cost I paid.
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kcaz56
05-26-2017, 07:35 AM #5

It's odd. I might have a poor chip. I bought a ready-made unit from NewEgg that came with this 8700k, maybe they just get cheaper chips which is why they can sell prebuilt units so cheaply? I couldn't build it for most of the cost I paid.

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