@ Jacky or anyone else - Not sure if it will help anyone but here are the settings I used for 4.7ghz stable. I had to give it a little more vcore for 4.8ghz but the same settings for the rest.(Have done a lot of testing to get this right)
This is all I changed: (Memory XMP disabled as explained above).
Advanced Frequency:
- CPU Base Clock - Manual
- CPU Clock Ratio - 47
- XMP - Disabled
Advanced CPU Core Settings:
- Uncore Ratio - 39
- C States (C1E, C3, C6/C7, Ther Mon & EIST - Disabled
Advanced Power Settings:
- Vrin LLC - Extreme
- Vrin Current Protection - Extreme
- DDR CH (A/B/C/D) - Extreme
- Pwr Phase - Extreme
CPU Core Voltage:
- CPU Vrin External Overide - 1.9v
- CPU Vcore - 1.325v
- CPU Ring - 1.15v
And for 4.7ghz that is all I set, this has ran stable for over 12 months and I have never had a BSOD or crash relating to the overclock. Passes IBT 10x Max and others that I tried. For 4.8ghz if anyone is interested I had to use 1.4v and although it passed IBT also and the other tests, the TJ Max was literally on 89 degrees! so I will stick with 4.7ghz. This may not help anyone but thought I would post anyway. I am in no way an expert overclocker like some of you guys, hence the XMP turned off, when I use XMP my overclock is very limited passed 4.3ghz so I run at default 2133 instead of 2666, not overly bothered about that. The uncore @ 3.9 was about as high as I tried with that, could possibly have that running higher. Hope it helps someone. This is using the Gigabyte Bios, by the way so some settings may be slightly different for you.
I have considered upgrading once Intel 10 comes out or move to AMD, but it does run great upto this point my system for what I need.