Sorry I forgot some detail
I tried an E8600 under the biostar , with this cpu I was able to reach 650 fsb with a friend's P5E3 premium in single channel via setfsb and boot at 620 fsb in dual so the cpu is able to catch over 600 fsb, the trouble is the biostar can't achieved this as easily as I tough, and probably there will be no point for any stability, that's what frustrating me.
For my IP35 pro , I just set 9 x 400 fsb (q6600) with ram at 1200 and memset give me PL = 5 , original trfc is 42 from ballistix and I was able to tight it to 28.
You probably right I was expecting too much.
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