Gigabyte GA-EP45-UD3R fsb limit

hi fellow overclokers..

I'm in progress of OCing Q8200 on gigabyte ep45-ud3r mobo with ocz reaper 1200mhz memory. So far I can only reach 3.36ghz stabil, pc boot with 3.43ghz, then hang while stress test with OCCT/prime95.

I've try different memory:fsb partition, I even try put all on auto. I can only make it stabil at fsb 1960mhz max, is it the limit of the fsb on this mobo? if its true? anyhting else can i do? like updating the BIOS?

before this I have OC with ocz reaper 1066, memory reach 1152mhz stabil, I'm hoping with ocz reaper 1200mhz, I could go higher.
The memory varies base on memory:fsb partition, it only stuck at fsb 1960+mhz. I've try lossen the timings, didnt help..
is it really the limit of the mobo?

thanks

What voltages are you using for everything?

at 3.36

cpu 1.3v
ram 2.08v
mch 1.4v

gradually increased..

cpu loadline enabled
the rest is on auto