Setting NB / Dram freq

[Fallen-Angel]

Hey guys,
I wanted to oc my NB by setting the CPU/NB freq from 2000mhz to 3000mhz, but didn't succeeded. I could set the CPU/NB freq up to 2.8ghz. When I try to set it to 3.0ghz, no matter what the voltages are (even on auto) the system doesn't post. May that refer to my Dram freq (1600mhz)? My I set the CPU/NB freq up to 3.0+ by installing faster RAM, or can I oc my 1600mhz RAM?

Edit: when I oc the NB, should I leave the HT Link freq to "Auto" or may I also set the freq near to the NB freq?

Best regards,

FA

[NemesisChild]

The 1090T IMC can handle CPU/NB frequency of 3000MHz+ but does need some tweaking.
I'm running 2x4GB G.Skill 2133 set@ 2023MHz with CL9 timings.
Here are my 24/7 stable settings (252.9MHz CPU clock):
CPU@ 4.046GHz (1.48750v)
CPU/NB@ 3034MHz (1.38750v)
HT Link Frequency@ 2023MHz (1.2750v)

Because of the IMC design, you may be limited by running 1600 memory.
However, I was able to get 3000+ when I ran my 2x4GB G.Skill 1866 set on my CH5F.
G.Skill recommends running a CPU/NB frequency between 2400-2600MHz with 1600 memory.
1866 memory: 2600-2800MHz
2000 memory: 2800-3000MHz

[Fallen-Angel]

Hmm, interesting. Just as I thought. I will definitive purchase the 2133mhz Dominator from Corsair + the H100 cooler in some weeks, but is it a good idea to set the Dram voltages from it's standard (1600mhz) higher? (1866+) [manually]
Btw I set the NB freq to 2.8Ghz and continue folding so if the system stay stable, I leave the setting at current state.

[NemesisChild]

I have found that this board needs more DRAM voltage than most modules specify.
In other words, 1.50v modules need 1.5250v to run stable.
1.65v modules need 1.66875 to 1.6750v to run stable.

[Fallen-Angel]

How's that? How did you found that out, or why is it more stable? The RAM voltages in BIOS are 1.65v (for mine RAM) and Aida64 shows 1.660v. It's quite stable if you ask me.