how to increase ram frequency?

[the_electrician]

Ok ive got some Corsair 2GB DDR2 XMS2 Dominator PC2-8500C5 TwinX (2x1GB). I belive it should run @ 1066Mhz with timings of 5-5-5-15 at 2.1v.
Ive done a simple overclock of a q6600 to 3Mhz by increasing the bus speed to 333 with a 9 times multiplier. My system becomes unstable if i increase the cpu speed above 3.05Mhz.
I would like to keep my current over clock but run my ram @ 1066Mhz. Can anyone help. My mobo is a ASUS P5Q SE.

Ive also purchased 8Gb of Kingston pc2 - 6400 cl6. i run xp 32 thus will only recognise 4Gb?
Would i be better of selling this and buying another 2gb of corsair. will there be much of a performance difference between 4Gb of both ram?

 

[95thrifles]

XP 32 can only see about 3.2 gig, so yeah theres no point putting in more than 4, Id say yes, sell the kingston and get 2 more of Corsair, just make sure its exactly sam as what you already got tho
In your bios you should have a setting labelled DRAM freq or the like, this is where you can select what freq your RAM runs at

 

[the_electrician]

Thanks
the option was in bios, dont know how i didnt see it.
Sorry for the noob question