I also have the striker II with a q6600 g0 but I can't oc it over fsb 289 (multi-9).
Have tried to set the vcore to 1.35-1.40 but always just get the "hardware issue - contact supporter"-bluescreen when windows starts up.
also have pc2-8000 reaper x running at 1000mhz without any prob at auto-voltage.
- have tried to increase NB, SB voltage, decrease ram to 800mhz, linked, unlinked fsb-mem.... but still get the bluescreen - no chance over fsb 289
- have a zalman 9700 LED with pretty low temp while running prime95 - have no idea why I get that bluescreen.
- had bios 0801 and updated to 1001, but nothing changed.
so... could you please post your exact settings for your 3ghz-oc, as well as the 3,4ghz!