i7 7700k unstable at stock Boost, whats causing this?

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ScottyDontNZ

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Jun 4, 2015
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Specs -
Asrock Z270 Extreme4
i7 7700k
Deepcool - Maelstrom 120T 83.6 CFM Liquid CPU Cooler
Crucial - Ballistix Sport LT 16GB (2 x 8GB) DDR4-2400 Memory at 1.2v
Gigabyte GTX 1080ti Gaming OC
Silverstone - Strider Gold 650W 80+ Gold
Intel - 600p Series M.2-2280 OS Drive with Windows 10

I just cant OC my CPU at all without causing issues, mostly a freeze up when Alt Tabbing or just general freezing while gaming. Stock boast is 4.6Ghz and I have tried turning off intel speed step and just leaving it at 4.6Ghz at 1.325v and I still crash. I have tried AsRocks presets that according to reviews should give excellent results, but I still have issues, even at the lowest of 4.6Ghz. I tried 4.6Ghz at auto volts which also failed. But, I have been able to go to 5Ghz and leave Adia64 running for 4 hours and keep decent temps only to crash once in a games.

Something worth noting, even when everything is set to auto, sometimes my PC will fail to turn off or restart. But once I have done a hardset it will start fine. If I restart from Windows desktop I sometime freeze up on the spinning wheel image after the restart.

This has been on multiple fresh install's of Windows 10.

Please help me! I spent extra money on these parts with the expectation of overclocking.
 
Solution
4Ryan6
I have in the past had problems with ASRock motherboards exhibiting similar problems, an intermittently malfunctioning motherboard is one of the most difficult components to diagnose, I suggest you RMA the motherboard and have it replaced or swap to a different brand board.

In some situations the ASRock board on auto will send high voltage spikes to the CPU and that's not good, but you can possibly get around that by taking full manual control of all the motherboards BIOS settings, (if you have that much overclocking knowledge under your belt), and when it comes to ASRock, never ever use a BETA Bios Flash.

I also suggest you look here to compare notes with others running similar setups...
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photonboy

photonboy

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Jun 20, 2006
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I would suspect the Motherboard first, and PSU second.

Since AIDA64 is stable, then the CPU is probably fine. Thus, I suspect the inability to provide power properly when the load is changing. That most strongly suggests the motherboard is the issue (specifically the VRM's).

Since you've tried multiple ways to OC without success then I would say perhaps it's time to give up (should see minimal benefit in most situations anyway).

OTHER:
You may also have some data corruption now, as I'm not sure why RESTARTING would cause a freeze but a cold boot would not.

Also, whether it's the CPU, PSU, or Motherboard it's likely you would not replace either part so it probably doesn't matter which is preventing the overclock (and I doubt it's just a setting issue but I could be wrong).
 
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jossrik

jossrik

Distinguished
Sep 26, 2002
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Jiggery pokery in windows can be caused by faulty memory also. Run you some memtest. If you have a known good PSU or have a friend with one, you can try that. How long have you been running this PC and how long has the problem persisted, how old are the parts in general to each other?
 
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Deleted member 217926

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Make sure you have the latest BIOS then test the RAM if it's still not stable.

What are your temps?
 
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ScottyDontNZ

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Jun 4, 2015
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I have run Windows Memory test and passed. I have had optimised settings disabled and manually adjusted vcore. I have the latest Windows Fall update freshly installed last week on a formatted m.2. Bios is up to date but I have looked at Asrock site and there may be a beta bios available. I believe my PSU is tier 2. Parts were all brand new 3-4 months ago. Temps are fairly good at stock/boast settings of 30-35 degrees idle and around 65-75 in BF1. Up to 80 in stress tests.
 
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4Ryan6

4Ryan6

Champion
Apr 14, 2002
20,610
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52,915
I have in the past had problems with ASRock motherboards exhibiting similar problems, an intermittently malfunctioning motherboard is one of the most difficult components to diagnose, I suggest you RMA the motherboard and have it replaced or swap to a different brand board.

In some situations the ASRock board on auto will send high voltage spikes to the CPU and that's not good, but you can possibly get around that by taking full manual control of all the motherboards BIOS settings, (if you have that much overclocking knowledge under your belt), and when it comes to ASRock, never ever use a BETA Bios Flash.

I also suggest you look here to compare notes with others running similar setups.

http://www.overclock.net/t/1621347/kaby-lake-overclocking-guide-with-statistics
 
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