Also, I'm not sure where it is, but I followed a guide someone linked to from the evga forums and found my max bclk to be 222. It was at 1.33750v QPI. So it's looking like the ceiling for my chip would be 21x222 or 4662mhz.

I just dropped the multi to 17, dropped the ram to the lowest divider and went to town.

Following that test, I was able to get 4200mhz (21x200) (Lin-X using 4096mb) stable at 1.33125 core and 1.3125 QPI (compared to my other results... a little higher core and a little lower QPI).

Since I don't really like the 0006 bios (requires a tad more vcore), I'm left 0209 and with a max stable speed of 4200 at 21x200 (or 19x222 with a max of 4218).

Since I can keep my ram at 1600, I'll keep the 21 multi for now. Might look into some 1800mhz ram so I can play a bit in the 19 multi though. I know it's really not worth the effort though for 200mhz.