I assume you've hit the cpu's limit at 2.2+GHz?
What vcore are you at?
Next step is to maintain your current cpu MHz but with a higher FSB.Seeing as you have DDR400 you should be able to hit & maybe exceed 200MHz

If you cant select any multiplier lower than x14 you'll need to release the lower multipliers by joing up 1 of the end L3 bridges....atm I can't remember which one

,but if you need to know I'll see if I can dig it up
Anyway ,ramping upto 200MHz FSB will certainly cut your WU times
