Finally got stability at 4.050 9x450 today.

I had to bump vcore to 1.4v
My ram is at 1080 with 5-7-7-22 timings

I've only tested for about 20min in Orthos, but considering that I couldn't get more than 10secs with my old settings, I'm pretty happy. I will try to run a longer stress test to verify stability but it looks great so far.

On a side note, I can still boot and run superPI at 4.203 but fail Orthos almost right away and I don't wanna go over 1.425vcore.