ASRock Extreme4 7700k Overclock Freezing

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   After many weeks of fighting my system hard freezing, lock up, with no relevant BSOD (if i ever got one) I was about ready to send the board back. (Extreme4 Z270)

After much research I discovered it seems the ASRock boards come with a fairly low PLL voltage for overclocking compared to other boards like Asus (1.2v)I want to say the highest PLL when selecting a pre-set OC and tweaking from there is 1.1v (might be 1.0) This is great for temps, but seemingly not for stability.

After trying everything under the sun to cure my OC freezing problems I finally bumped the PLL to 1.15V and have had a stable 5ghz 7700k overclock since. @ 1.4V LLC - 2 (1.395 in bios) I was able to lower the PLL to 1.14V after finding minor infrequent instability from 1.13V

PLL will increase your temps but i'm running 2x240mm copper rads, one in the front of the case push/pull and one at the top of the case in push config. Arctic F12 Fans, I can crack mid 70's briefly when running stress tests. Idle is 30* on the hottest core and mid 20's on the rest. Gaming I see in the 50-low 60s (GPU is in the same loop 1070)

Just posting this in hopes that it helps someone else out  that encounters this issue in the future.

(Some tags to help people searching this issue, like I did for so long)
ASRock Extreme 4
7700k
Hard Freeze
Lockup
Lock-up
Hard Freezing

Edited by kat-pwr - 23 Jun 2018 at 2:01am

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kat-pwr Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Jun 2018 Status: Offline Points: 4	Post Options Post Reply Quote kat-pwr Report Post Thanks(1) Quote Reply Topic: ASRock Extreme4 7700k Overclock Freezing Posted: 23 Jun 2018 at 1:55am
	After many weeks of fighting my system hard freezing, lock up, with no relevant BSOD (if i ever got one) I was about ready to send the board back. (Extreme4 Z270) After much research I discovered it seems the ASRock boards come with a fairly low PLL voltage for overclocking compared to other boards like Asus (1.2v)I want to say the highest PLL when selecting a pre-set OC and tweaking from there is 1.1v (might be 1.0) This is great for temps, but seemingly not for stability. After trying everything under the sun to cure my OC freezing problems I finally bumped the PLL to 1.15V and have had a stable 5ghz 7700k overclock since. @ 1.4V LLC - 2 (1.395 in bios) I was able to lower the PLL to 1.14V after finding minor infrequent instability from 1.13V PLL will increase your temps but i'm running 2x240mm copper rads, one in the front of the case push/pull and one at the top of the case in push config. Arctic F12 Fans, I can crack mid 70's briefly when running stress tests. Idle is 30* on the hottest core and mid 20's on the rest. Gaming I see in the 50-low 60s (GPU is in the same loop 1070) Just posting this in hopes that it helps someone else out that encounters this issue in the future. (Some tags to help people searching this issue, like I did for so long) ASRock Extreme 4 7700k Hard Freeze Lockup Lock-up Hard Freezing Edited by kat-pwr - 23 Jun 2018 at 2:01am

badbri Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 20 Feb 2018 Location: USA Status: Offline Points: 415	Post Options Post Reply Quote badbri Report Post Thanks(0) Quote Reply Posted: 23 Jun 2018 at 11:41am
	Thanks for the info. Curious what is current speed you OC the cpu using those settings and hardware ?
	https://www.passmark.com/baselines/V9/display.php?id=99573335296