[6820hq Skylake] Precision 7720 extreme mods

[JadeRover]

Hi guys,

 

I have some free time on my hands and I just wanted to share some of the mods I'm going to do to my precision 7720. I will write a complete guide once I am satisfied on the overall mods.

 

Currently I have a i7-6820HQ motherboard that I will soon replace with a i7-7920HQ motherboard. 

In the meantime, I have flashed a modified v1.15 bios (enables undervolting) using the dell bios container method here, using version v1.40 as a base :

GitHub - vuquangtrong/Dell-PFS-BIOS-Assembler: A script to combine BIOS entries into executable Dell Firmware Update Utilities

 

I also used this smokeless_UMAF beta tool on a USB found here : Smokeless_UMAF/UMAF_BETA.zip at main · DavidS95/Smokeless_UMAF · GitHub to enable some hidden options in the BIOS : we have access to :

- CPU overclocking (up to the limits of your cpu, my 6820hq went from 3.2 Ghz all core -> 3.6Ghz all core)

- RAM overclocking

- RAM SPD writing (= we can write custom XMP profiles to non XMP ram)

- Intel ME region flash allowed (= we can flash custom ME region with overclocking BCLK profile)

 

Here is my 6820hq running with a 102.7 ish MHz BCLK, going over this results in an instant crash due to intel limitation = need to investigate :

 

Resulting in a ~100Mhz boost compare to non OC BCLK. 3.600Ghz -> 3.690Ghz

 

More to come !