PLL PLL termination voltage

Asryan · Aug 10, 2019

Hi

In order to tweak my OC a bit I wondered if it was useful to "fix" the parameter PLL termination voltage, I read on some that it could prevent the particular heating.

On an ASUS motherboard with an 8086k processor what value should I put, I had read 1.15 but I would like your opinion, thank you

Enterprise24 · Aug 26, 2019

If you mean temperature reduce it should be PLL bandwidth (select level) not PLL termination voltage. That is equal to VCCPLL on ASRock.
Level 3 equals 1.0v, level 4 equals 1.15 and higher like level 6 is in the neighborhood of 1.4

I play with VCCPLL since i5-6500 @ 5Ghz + ASRock Z170 OC Formula till 9900K + Z370 Taichi and can confirm that temp reduce by reducing this voltage.
Temp doesn't reduce alone. Current and power also reduce so I think it is true.
ASRock can set this voltage 1.1V minimum. Default is 1.2V on Z370 Taichi and 1.3V on Z170 OC Formula which cause massive temperature increase compared to my previous ASUS Z170-A and MSI Z170 Gaming Pro Carbon. All of my CPU can use 1.1V without problem but my 9900K require 1.12V minimum. Lower will cause idle freeze (just freeze no BSOD). Surprisingly it only freeze on idle. Full load never freeze.

IIRC ASUS motherboard default voltage is 1.25V probably equal to level 5 ? you can try reduce it and see if it freeze when idle or not.

Processor	5900x
Motherboard	Asus CrossHair Dark Hero
Cooling	EK AIO 360
Memory	G Skills Trident Neo -32G - 3600
Video Card(s)	Asus trix RTX 3089 OC
Display(s)	LG38GN950
Case	Phanteks P6900S
Power Supply	Seasonic Prime Ultra 850W titanium

System Name	Can I run it
Processor	delidded i9-10900KF @ 5.1Ghz SVID best case scenario +LLC5+Supercool direct die waterblock
Motherboard	ASUS Maximus XII Apex 2801 BIOS
Cooling	Main = GTS 360 GTX 240, EK PE 360,XSPC EX 360,2x EK-XRES 100 Revo D5 PWM, 12x T30, AC High Flow Next
Memory	2x16GB TridentZ 3600@4600 16-16-16-36@1.61V+EK Monarch, Separate loop with GTS 120&Freezemod DDC
Video Card(s)	Gigabyte RTX 3080 Ti Gaming OC @ 0.762V 1785Mhz core 20.8Gbps mem + Barrow full cover waterblock
Storage	Transcend PCIE 220S 1TB (main), WD Blue 3D NAND 250GB for OC testing, Seagate Barracuda 4TB
Display(s)	Samsung Odyssey OLED G9 49" 5120x1440 240Hz calibrated by X-Rite i1 Display Pro Plus
Case	Thermaltake View 71
Audio Device(s)	Q Acoustics M20 HD speakers with Q Acoustics QB12 subwoofer
Power Supply	Silverstone ST-1200 PTS 1200W 80+ Platinum
Mouse	Logitech G Pro Wireless
Keyboard	Logitech G913 (GL Linear)
Software	Windows 11

PLL PLL termination voltage

Asryan

Enterprise24