I have been struggling for the last few days with my new PC set-up consisting of a:
MSI X99S Gaming 7 Mainboard i7-5820K CPU G.Skill DDR4 3000mhz (F4-3000C15Q-16GRR)
The issue is that once I enable the XMP Profile on my Mainboard (latest BIOS revision) the Mainboard automatically sets the CPU base clock from 100mhz to 125mhz. The system then becomes extremely unreliable and crashes very frequently. Once I disable XMP and reset the BIOS to default settings I can run the RAM at 2133mhz without any issues and the System is quite stable.
But still I'd like to get the full 3ghz performance out of my memory modules. It seems the issue is that only the clock is increased (thus overclocking my CPU) but other settings to offset this increased clock speed are not set by the XMP2 Profile.
Unfortunately I have never bothered with overclocking before so I have no clue how to manually adjust the CPU to run at a stable speed with the base clock @ 125mhz.
Can anyone help me explain: a) Why the RAM needs the CPU to run @ 125mhz b) How I need to adjust the multiplier to get it back to the 3.3ghz it can run safely?
The Mainboard is running the latest BIOS update (17.10 also called Release HA)