It looks like I'm jumping on all of your posts! lol
I noticed you have 333 value ram...
Well...there's no wrong way to say this...BUY NEW RAM!
You'll need at least PC3200 of good brand or type to get where you want to be...but I do have a suggestion.
I think you should try setting a memory divider so that your ram does not run higher than 185 FSB. (370 effective)
Most boards without AGP/PCI locks, especially newer boards...the AGP/PCI are based on RAM speed. If you dont let your ram get out of range, the PCI/AGP shouldn't be out of range.
Try setting the divider, and see where your CPU FSB gets to. Your Vcore is fine for now, how are your temps?
If you are sittin at 235 and can't go higher, try what I suggest, and keep your HTT multiplier (or LDT multiplier) at 3x. for now.