UnOfficial Asus Rampage II Extreme Thread

[dejanh]

I have not set this manually yet. I wish someone with a good 4.4-4.6ghz O/C would post their settings like I have above. It would be much easier for me as a STARTING point. I started with the above settings and hit 4.2ghz stable (with your suggested tests) right off the bat. My problem seems to be going any higher is going to require more customized voltages on things I currently have set to "auto".

If you could suggest voltages that I currently have set to auto, to their "mid-range" manual setting that would be great. I can easily bump it up/down from there.

Thanks so much for your help it is GREATLY appreciated and I enjoy learning from you.



I will openly admit that I have not tried "bumping down" my CPU vcore as of yet. I was hoping to leave it at the current setting, or raise it if need be when trying higher clocks. My temps are "decent" for now so it wasn't a priority. I wont know for sure until I get some good settings/advice from someone on what voltages to "try" for a 4.4-4.6 O/C.

The other thing worth mentioning is my RAM is only spec'd to 1600mhz, so I may have to set it to 13xx while running higher O/C tests and upgrade to a higher spec if I can't get these sticks to go higher.

My starting specs for overclocking are as follows...

BCLK 200MHz
Multiplier 21x
DRAM 8-8-8-24-2T (starting with this always, I tweak after; your DRAM will vary based on specs)
LLC Enabled
Vcore 1.35V (starting value, generally lowered at least 0.05V for 4.2GHz OC)
QPI/DRAM 1.35V
DRAM 1.65V
IOH/ICH 1.11V

Using "auto" voltages is not a good idea. Also, from my experience you will need roughly 0.06V per 100MHz extra past 4.2GHz. Achieving 4.4GHz with decent cooling is perfectly possible. Achieving 4.4GHz+ is much harder. 4.5GHz+ or even 4.6GHz will be very tough for 24/7 use completely stable on an i7 920 because the BCLK is getting up there (by stable I mean LinX stable, Prime95 stable, and able to use S3).

[TechloGoblin]

My starting specs for overclocking are as follows...

BCLK 200MHz
Multiplier 21x
DRAM 8-8-8-24-2T (starting with this always, I tweak after; your DRAM will vary based on specs)
LLC Enabled
Vcore 1.35V (starting value, generally lowered at least 0.05V for 4.2GHz OC)
QPI/DRAM 1.35V
DRAM 1.65V
IOH/ICH 1.11V

Using "auto" voltages is not a good idea. Also, from my experience you will need roughly 0.06V per 100MHz extra past 4.2GHz. Achieving 4.4GHz with decent cooling is perfectly possible. Achieving 4.4GHz+ is much harder. 4.5GHz+ or even 4.6GHz will be very tough for 24/7 use completely stable on an i7 920 because the BCLK is getting up there (by stable I mean LinX stable, Prime95 stable, and able to use S3).

TYVM sir.I will use this as a starting point and see how it goes. If I decide/need to stay with 4.2 for 24/7 stability I'll try lowering my CPU voltage to see how low I can get it and stay stable. I can def. say without a doubt my CURRENT settings are 100% stable. We'll see if I can go higher without issues by not using "auto" on other important voltages