Kinda new to this so just stick with me for the min... and thought the best way to learn would be to ask 
I've read the sticky at the top but couldn't get a definite answer.
ATM i'm on an OEM computer with a Q6600 (NOT OC'ED) & 2 GiG 667 generic ram, in cpu-z it shows no timing ETC..

So I'm thinking of replacing it with some branded ram, but from what I've been reading I'm not sure what speed to get. All the places I've read say it's best to have the ram set to a ratio of 1:1. So on my none oc'ed Q6600 the FBS is 266, so 266x2 = 533, so would 533mhz ram be the best performance ? If not and if i bought some PC2-6400 @ 800, due to it not been in ratio of 1:1 would i see a performance boost or decrease ? (Reason I'm thinking of getting PC2-6400 is cos it's about the same price as PC2-5300, so thought might as well get the extra performance if any for the same price)
Really Appreciate any info on this

I've read the sticky at the top but couldn't get a definite answer.
ATM i'm on an OEM computer with a Q6600 (NOT OC'ED) & 2 GiG 667 generic ram, in cpu-z it shows no timing ETC..

So I'm thinking of replacing it with some branded ram, but from what I've been reading I'm not sure what speed to get. All the places I've read say it's best to have the ram set to a ratio of 1:1. So on my none oc'ed Q6600 the FBS is 266, so 266x2 = 533, so would 533mhz ram be the best performance ? If not and if i bought some PC2-6400 @ 800, due to it not been in ratio of 1:1 would i see a performance boost or decrease ? (Reason I'm thinking of getting PC2-6400 is cos it's about the same price as PC2-5300, so thought might as well get the extra performance if any for the same price)
Really Appreciate any info on this