AMD Ryzen Processor and AMD Ryzen Master Over-clocking User’s Guide
Originally Posted by bluej511
Originally Posted by gupsterg
Yes. I believe SOC voltage rail is to IMC as well.
Personally 1.1V is the most I have given CPU sample 3 as I was really trying to see if I could get 3200MHz strap working. What I regard as my best all round CPU (CPU sample 2) in regard to core/ram clocking 1.05V is the MAX I have given it for testing. The Stilt also posted this:-
Yea i read what he wrote ages ago, I''m thinking though that it might have to do with the issue Asus had with bricking BIOSes considering he wrote that when the issue was going on? Could be wrong but not sure.
I ran it at 1.15v because its what it needed to boot at 3200mhz (and wasnt reliable at that) on BIOS 1107 (same cpu mind you) i need 1.0v of SoC and it boots even more reliably then before. Even with tighter timings i haven't touched SoC. So yea it might be due to the IMC but why would a simple BIOS update let it work at 3200mhz with less SoC then it did before haha.
Unless some timings we can't change are astronomically high and it's letting boot i have no idea anymore. It seems to be more voodoo then actual science
Figure 11: AMD Ryzen Master application - Memory Overclocking Example
In the above example the memory clock is adjusted from default 1200MHz (DDR4-2400) to
1333MHz (DDR4-2666) while timings have been increased from 17-17-17-17-39 to 18-18-18-18-
40. Memory voltage was also adjusted from default 1.20V up to 1.296V and SOC Voltage was set
. Note that Memory VTT voltage will automatically be set to half of Memory voltage
(MEM VDDIO).EXTREME OVERCLOCKING GUIDE
ASUS CROSSHAIR VI
4. Safe voltage ranges
Note that the listed values are not guaranteed and only for reference.
Ambient recommended - Ambient max -LN2 recommended - LN2 max
CPU Core Voltage 1.40V Up to 1.45V 1.80V Up to 1.95VSOC Voltage 1.15V Up to 1.20V 1.20V Up to 1.25V
DRAM Voltage1 1.40V Up to 1.90V 1.80V Up to 1.90V
1.8V PLL Voltage 1.80V Up to 2.10V 3.00V Up to 3.20V
1.05V SB Voltage 1.05V Up to 1.40V 1.30V Up to 1.40V
1.8V Standby Voltage 1.80V Up to 2.10V 2.10V Up to 2.30V
2.5V SB Voltage 2.50V Up to 2.80V 2.70V Up to 2.80V
Just to clear thing up a bit I thought I'd copy and past a couple of tid bits from the guides we have at our disposal. The first is AMD's guide and the second is Elmor's guide.