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Asrock z390 Extreme4 issue

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aussie7 View Drop Down
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    Posted: 25 Dec 2018 at 10:47pm
Hello I have an Asrock z390 Extreme4 and I'm having issues overclocking it :(

system is
i5 8600k overclocked to 5000mhz
gskill 2x8 16gb kit of 3000mhz ram

I have overclocked to 5000mhz in bios and when I am in windows cpu-z shows the overclock, but when I stress test with prime95 the cpu speed fluctuates between 4500mhz and 5000mhz

For some reason it won't stay at 5000mhz while under 100% load

I have tried everything I can think of and nothing seems to fix this issue, anyone know how to fix it ?

TIA :)
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aussie7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aussie7 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 12:42pm
My Overclock Settings

CPU CONFIGURATION     
CPU RATIO     ALL CORE
ALLCORE     40
BLCK FREQ     125
BLCK SPREAD SPECTRUM     DISABLED
BOOT PERFORMANCE MODE     TURBO PERFORMANCE
FCLK FREQ     800MHZ
AVX RATIO OFFSET     AUTO
BCLK AWARE ADAPTIVE VOLTAGE     ENABLED
RING TO CORE RATIO OFFSET     DISABLED
INTEL SPEEDSTEP TECHNOLOGY     DISABLED
INTEL TURBO BOOST TECHNOLOGY     ENABLED
INTEL SPEED SHIFT TECHNOLOGY     DISABLED
LONG DURATION POWER LIMIT     130
LONG DURATION MAINTANED     AUTO
SHORT DURATION POWER LIMIT     150
CPU CORE CURRENT LIMIT     AUTO
     
DRAM TIMING CONFIGURATION     
LOAD XMP SETTING     XMP2.0
BCLK FREQUENCY     125MHZ
DRAM REFERENCE CLOCK     AUTO
DRAM REQUENCY     DDR4-2200
DRAM CLOCK     AUTO
     
CPU CORE VOLTAGE     
FIXED VOLTAGE      1.45V
CPU LOAD-LINE CALIBRATION     LEVEL 1
DRAM VOLTAGE     1.45V
DRAM ACTIVATEING POWER SUPPLY     2.5V
PCH 1.0 VOLTAGE     1.15V
VCCIO VOLTAGE     1.1V
VCCST VOLTAGE     1.1V
VCCSA VOLTAGE     1.2V
VCCPLL VOLTAGE     1.3V
CPU INTERNAL PLL VOLTAGE     AUTO
GO PLL VOLTAGE     AUTO
RING PLL VOLTAGE     AUTO
SYSTEM AGENT PLL VOLTAGE     AUTO
MEMORY CONTROLER PLL VOLTAGE     AUTO
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RLGL View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RLGL Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 10:18pm
CPU temperature while under load is...??.?
Asrock Z370 Gaming K6,Intel i7 8700K,
Asrock x570 Taichi

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aussie7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aussie7 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Dec 2018 at 10:49pm
Originally posted by RLGL RLGL wrote:

CPU temperature while under load is...??.?


~65c has been delidded
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aussie7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aussie7 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Dec 2018 at 8:12pm
can anyone help ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeBar Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2019 at 3:44pm
How can you have 65簞c full with a 1.45v Vcore ?

H2O ? Even if, what's your stress test program ?

And do you have a compatible RAM to run at 1.45v ?
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aussie7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aussie7 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2019 at 10:38pm
for starters I'm on water cooling and have had my cpu delided and i use prime95 for stress testing

i was unable to run the cpu at 100% @ 5.0Ghz @ 1.45v as it under clocks back to 3.6Ghz no matter what overclock setting I use

i have now changed motherboard and the cpu is running fine overclocked

i suspect the problem may have been the avx ratio setting, as it was set at auto and not 0

if i get time i will test it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SiRoCu Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 4:29am
Try this
Settings>Power & Sleep>Additional power settings>Preferred plans.. then set to High performance

And your AVX is effect to the CPU frequency so try AVX to Auto (0).

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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeBar Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 5:49pm
Try using P95 v26.6, it doesn't use AVX, so you can stress test with real conditions (if you don't use encoding, or AVX using apps).
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Globespy Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jan 2019 at 1:15am
Why did you change the VCCPLL to 1.3v?
That's way higher than it should be, and this setting is really only for LN2 cooling.
I would also dial back your VCCSA to 1.15 as it's been noted that both VCCIO and VCCSA stock voltages are too high on this board and cause issues with stability.
Less is often more.

Also, I would change your Long and Short power limits to 4095 (max) and your CPU core current limit to 255.50 (max) - this may be exactly why you are having issues since you are severely limiting power settings.

1.45v for 5ghz is way too much and could be causing issues - but if your CPU needs that much voltage to hit 5ghz then you simply lost the lottery and should settle for 4.8-4.9ghz given the almost insignificant performance increases in everyday things like gaming etc.
200mhz is literally a frame or two at best in most modern games as much of the performance is also GPU related, especially if you are gaming at 1440p or above where you become more GPU bound.
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