more info, board type etc...
to "ajw84": if his system is stable....so what? i could have my system stable at like 8-8-8-32 if i wanted... if his system is stable, may as well tighten the timings until its unstable, then loosen them just enough so that it is stable, but faster than 5-5-5-15
agreed with eklipz that its a 1333 cpu... could be a Q6600 at 1066 as well tho... but i doubt he would find anything in the forums on how to tighten the timings in general..its different to every BIOS...if he hasnt even had a look in his bios yet then...
if you look around your bios you will find something for your RAM timings... use CPUz it should tell you the recommended timings for a certain clock on your RAM.