Mine is R.A12. 
Your's?

Hayase, as tachlio said.

set HTT multiplier to 3x or 2x.
Your HT link must always keep below 1000

great indeed..
mine cannot even surpase 1200..
not try to go further?
seems vcpu on default.. ever try to prime stable it?

i've primed mine more than 10 hours @ 2.45ghz with 1.4v but the temp reach 62c..
try 2.50ghz easily hit 65C so don't want to stress it more.. maybe if got good cooler..

budget is everything...

@fantasy_kenny
how come u manage to clock 2.8g using default voltage? u set it auto or manually in the bios?

as the pic i'm refering the cpuz reading.. but for my case i cannot rely on it.. i put 1.4v in the bios but cpuz reported 1.2v..

if really can do higher speed with less voltage... maybe i should get a better cooler to reduce the temp..

Only u urself can tell the answer. O/c is never guaranteed. If u r lucky, with some skills, u can achieve good speed. If u r unlucky, even with great skills..u might only hit OK speed...it depends.

About the RAM, maybe u should check what chip it has by reading (or take a close up pic) of the code written on it. The google etc....see what other people's result r like. From there, u o/c....

update!

3500+ Orleans F2 | serez | GIGABYTE GA-M55SLI-S4 | Haier DDR2-533MHz | Thermaltake Blue Orb II |

Blue Orb II can be used on AM2.
Blue Orb II