I see, cheers Rapid, i'll have a proper look now whilst gf has something on the Eurovision song contest on.
I'm running a divider of 1:1 for FSB:RAM, as far as i'm aware.
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Having looked in BIOS, Working Settings are:
FSB Freq: 350MHz
DRAM Freq: 933Mhz
That's with the CPU at 3.34Ghz speed, total FSB of 1411MHz
And Non-Working settings are:
FSB Freq: 360MHz
DRAM Freq: 959MHz
As for RAM ratio's, despite understanding the concept I can't see any BIOS options related to them. The nearest thing to it I can think of is the 'CPU Ratio Setting', which is at 09.5 (My CPU has a 9.5x Multiplier as standard)