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Strange issue Z68 since doubling RAM

rtwjunkie

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Recently I replaced the 2x4gb sticks on my spec pc (the ASRock) to 2x 8gb. Ever since, when I restart the computer, or an install needs a restart, there is no gentle restart. The system shuts down. Then after a second attempts to restart, and sometimes then goes to boot, but occasionally will fail once and stop, before completing bootup. However, from a cold boot, just starting up, there is never any pause.

Since this is my first foray into the core series motherboards (it's only been about 6 months), I have no idea what settings I need to adjust, since my suspicion is the increased memory is straining something. So, my settings are as follows: Vcore- 1.22; DRAM- 1.5v; VTT- 1.064v; VCCSA- 1.016v; PCH- 1.068v; CPU PLL- 1.862v. All 12v, 5v, and 3.3v voltages are rock-solid all the time.

Do I need to adjust any of these given my overclock and the 16gb RAM, even tho it is still only 2 sticks?
 

sneekypeet

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I would simply clear the bios on the motherboard, reboot and set PC to load auto defaults. If successfull on the next boot, then add in the XMP to adjust the memory speed.
 

AsRock

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And if your using raid setup remember after bios clear to setup it up on the next reboot.
 

Ketxxx

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Set everything back to stock, update the UEFI to the latest and see if you get any issues with stock settings. If you do, drop me a PM with as much detail as you can and I'll forward your issue to my asrock contacts for you.
 

rtwjunkie

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Set everything back to stock, update the UEFI to the latest and see if you get any issues with stock settings. If you do, drop me a PM with as much detail as you can and I'll forward your issue to my asrock contacts for you.

Ok, will let you know how it works out after I get home this evening. I appreciate the offer with ASRock!!

@sneekypeet: Thanks for the advice also on resetting to stock.

ALL: I do have the latest BIOS installed, I probably should have specified that.
 
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rtwjunkie

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System Name Bayou Phantom
Processor Core i7-8700k 4.4Ghz @ 1.18v
Motherboard ASRock Z390 Phantom Gaming 6
Cooling All air: 2x140mm Fractal exhaust; 3x 140mm Cougar Intake; Enermax T40F Black CPU cooler
Memory 2x 16GB Mushkin Redline DDR-4 3200
Video Card(s) EVGA RTX 2080 Ti Xc
Storage 1x 500 MX500 SSD; 2x 6TB WD Black; 1x 4TB WD Black; 1x400GB VelRptr; 1x 4TB WD Blue storage (eSATA)
Display(s) HP 27q 27" IPS @ 2560 x 1440
Case Fractal Design Define R4 Black w/Titanium front -windowed
Audio Device(s) Soundblaster Z
Power Supply Seasonic X-850
Mouse Coolermaster Sentinel III (large palm grip!)
Keyboard Logitech G610 Orion mechanical (Cherry Brown switches)
Software Windows 10 Pro 64-bit (Start10 & Fences 3.0 installed)
UPDATE: Cleared CMOS, restarted computer at stock. Everything fine. I then set all settings back to my overclock I had, with the one exception being the 16Gb (2x8Gb) sticks of RAM I decided to run at 1600 instead of 1866, and it restarts flawlessly. Go figure, lol...I didn't think it could be something that simple. Thanks for the advice guys!
 

Ketxxx

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Check your CPU PLL voltage, try 1.75v, load XMP profile, manually set RAM voltage to 1.6v. See if that works.
 

Aquinus

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Doubling the amount of DIMMs in your rig puts more stress on the IMC. You may need to bump your VTT or VCCSA voltage to get it stable at 1866Mhz.
 

rtwjunkie

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System Name Bayou Phantom
Processor Core i7-8700k 4.4Ghz @ 1.18v
Motherboard ASRock Z390 Phantom Gaming 6
Cooling All air: 2x140mm Fractal exhaust; 3x 140mm Cougar Intake; Enermax T40F Black CPU cooler
Memory 2x 16GB Mushkin Redline DDR-4 3200
Video Card(s) EVGA RTX 2080 Ti Xc
Storage 1x 500 MX500 SSD; 2x 6TB WD Black; 1x 4TB WD Black; 1x400GB VelRptr; 1x 4TB WD Blue storage (eSATA)
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Case Fractal Design Define R4 Black w/Titanium front -windowed
Audio Device(s) Soundblaster Z
Power Supply Seasonic X-850
Mouse Coolermaster Sentinel III (large palm grip!)
Keyboard Logitech G610 Orion mechanical (Cherry Brown switches)
Software Windows 10 Pro 64-bit (Start10 & Fences 3.0 installed)
I'm thinking I guess I really don't need to bump up to 1866...I mean, what's the point? Since this is high-quality RAM, I'm just going to lower the latencies, which is probably far more useful. I DO see the point in the 16gb straining the IMC.

Can you tell me exactly what to bump up just a tiny bit to overcome that? CPU PLL, VTT, or VCCSA, and how much? Or should I not worry about it since it's operating just fine now? With lowering the latencies, does that add strain I need to compensate for?
 
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