a8r32 mvp deluxe overclocking. help needed

[eav]

socket 939 3800+ Venice...2.4 at 512 of cache
asus a8r32 mvp deluxe

my knowledge of overclocking is limited. i could raise my cpu to 2.6
playing with multiplier and mhz...initially at 200, raised it to 220. multiplide by 12X. if i raise anymore, it crashes...blue screen, am i maxed out?
many options on board. i have 1gig of corsair value ram pc 3200 400 mhz
1 stick
cpu running at 2.6 gig= 40 Celcius.
so many options to tweek in bios.
thank you

 

[Forsaken1]

Processor volts(cpu) 1.35v
V Core.+100mv
North brige over volt 1.4v
Core 1.4v
Ht bus 1.4v
Soth bridge. Enable
Ht Link. 4x
Memclock 183

Shuld free you up a bit.Do not let cpu temp go much above 50c.