i7-9700k Overclock NEED HELP!

Nov 25, 2018
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I7-9700k Overclocking problems!

i7-9700k - 4.9Ghz OC
H150i PRO 360mm
MSI Z370 Gaming Plus (yes I know I should of gotten a better mobo)
Trident Z RBG 16 GB DDR4-3200
EVGA 1080 Ti
EVGA 850W Gold

I am trying to Overclock to the safe 4.9GHz but everytime I do I seem to drop in HWInfo when I stress test using Aida64, Prime95, and even RealBench... I have a Core Voltage of 1.35 and have tried from 1.25 to 1.35 and nothing has helped it. I'm not big on overclocking and this is one of my first major Oc's and I don't know if the core clock is supposed to drop when you do hard stress tests or If something in my system is malfunctioning.

PLEASE HELP!!
 
If you aren't stressing your CPU it fluctuates in speed. This is completely normal. If You run a benchmark it should stay at the OC speed. Even when gaming, if the game does not push the CPU hard enough, it will drop in speed as it has power saving features. If your speed is dropping during stress tests then its likely heat related and you need a better CPU cooler.

The VRM (voltage regulator module) handles the voltage regulation to the CPU. This is a very intensive and exact process. The higher end motherboards tend to have a stronger VRM. For better overclocking you want a higher phase VRM and heatsinks. If the voltage fluctuates too much in the VRM, you get a restart of,your PC. Strong stable VRM keep a stable OC. You can achieve 5.3 with that CPU possibly at the same 1.35 voltage with a better motherboard.
 
Nov 25, 2018
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Once i get home tonight ill try and see
 
Depends on your budget. All of these are better than what you have.

PCPartPicker part list / Price breakdown by merchant

Motherboard: ASRock - Z390 Extreme4 ATX LGA1151 Motherboard ($129.99 @ Newegg)
Total: $129.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:43 EST-0500

PCPartPicker part list / Price breakdown by merchant

Motherboard: Asus - ROG STRIX Z390-H GAMING ATX LGA1151 Motherboard ($177.64 @ Amazon)
Total: $177.64
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:45 EST-0500

PCPartPicker part list / Price breakdown by merchant

Motherboard: ASRock - Z390 Phantom Gaming 6 ATX LGA1151 Motherboard ($187.98 @ Newegg)
Total: $187.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:47 EST-0500

PCPartPicker part list / Price breakdown by merchant

Motherboard: Asus - PRIME Z390-A ATX LGA1151 Motherboard ($189.89 @ OutletPC)
Total: $189.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:48 EST-0500

PCPartPicker part list / Price breakdown by merchant

Motherboard: Asus - ROG STRIX Z390-E GAMING ATX LGA1151 Motherboard ($199.99 @ Amazon)
Total: $199.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:49 EST-0500

PCPartPicker part list / Price breakdown by merchant

Motherboard: ASRock - Z390 Taichi ATX LGA1151 Motherboard ($239.99 @ SuperBiiz)
Total: $239.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-11-25 08:53 EST-0500

 
Nov 25, 2018
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I would probably buy the Asus Prime II as i saw there are a lot of them around. Also do you believe this is the problem? Do you think the mobo i have can't support a stable overclock this high? Its only 4.9 on a cpu that says it has a turbo to 4.9..
 
Nov 25, 2018
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I also changed the avx to -3 which could be what made it drop, but on hwinfo it drops down to like 3.0 GHz from 4.9.. My voltage drops from 1.325 to .9 at times.
 
Nov 25, 2018
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Also if you could explain to me why the one i have now is too weak for overclocking it would be greatly appreciated, as well as why these other motherboards are able to overclock better.
 


You haven't mentioned your temps. Sounds like thermal throttling.
 
If you aren't stressing your CPU it fluctuates in speed. This is completely normal. If You run a benchmark it should stay at the OC speed. Even when gaming, if the game does not push the CPU hard enough, it will drop in speed as it has power saving features. If your speed is dropping during stress tests then its likely heat related and you need a better CPU cooler.

The VRM (voltage regulator module) handles the voltage regulation to the CPU. This is a very intensive and exact process. The higher end motherboards tend to have a stronger VRM. For better overclocking you want a higher phase VRM and heatsinks. If the voltage fluctuates too much in the VRM, you get a restart of,your PC. Strong stable VRM keep a stable OC. You can achieve 5.3 with that CPU possibly at the same 1.35 voltage with a better motherboard.
 
Oh, I thought you meant it goes down when you are stress testing. What does the speed and voltage drop to in the stress tests?

Your motherboard should be good enough for some overclocking. Maybe not 5.3GHz, but then again your CPU may not be up for that either.
 
Nov 25, 2018
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My temps usually stay around 60-65C i have a 360 cooler so i wouldn't think that would be the problem
 
Nov 25, 2018
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If I just want to OC to 4.9GHz which is where i have it now, how do i make it stable? Because when i run the benchmarks and stress tests this is when it will go from 1.3v to .9v and basically throttle down to like 3.0GHz. Do you believe that is because of the mobo not being strong enough and overheating because the cpu cooler should be fine
 
Nov 25, 2018
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I haven't tried any other software, I watched a couple videos made by Asus on overclocking the 9000s and saw they were all using HWInfo
 
Nov 25, 2018
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I believe I was, I couldn't find a download site for Prime95 so I found a link through a Youtuber so it could be a old version.
 
Nov 25, 2018
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I plan on taking a trip back to micro center and getting a Z370 Prime A Mobo as long as you both believe it is a good motherboard to overclock this CPU stable.
 
Nov 25, 2018
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Also what would be a good benchmark and stress test for this CPU when OC'ed. I've been using RealBench for Stress and Bench tests as well as Prime95, Cinebench, but I'm really not sure what I should be getting as I increase my core speed.
 
Those are the tests to run. Prime95 is typically the 1st test and followed by realbench. These are stress tests designed to test temperature and,stability. You should run these between 4-8 hours to,determine if your system has a stable overclock.

I have trouble believing your CPU is downclocking during a stress test and think HWinfo is misleading you.

If You decide to exchange the motherboard, I would recommend getting the Z390 model as they are newer and some have improved VRM over the Z370.
 
Nov 25, 2018
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Okay thank you so much, I think I will get a newer Z390 then and I will restart with the overclocking process. I will be back to give updates as I find out more info!
 

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