Mem divider for running 800 MHz DDR2 on 400 MHz FSB?

[Warren21]

I know the FSB on Intel procs is quad pumped. For example stock FSB is 266 MHz (1066 MHz quad pumped) which equates to 2394 MHz (2.4 GHz) on an E6600 with it's stock multiplier. If I have DDR2 800 ram (PC2-6400), and don't want it to overclock with the FSB, do I use a 1:2 mem divider? or 1:4..? Which is it so that I can run the RAM stock at 800 MHz DDR and the Processor at 400 MHz (1600 MHz system bus) FSB?

 

[n7]

1:1 aka 533 will result in DDR2-800 if you are running an E6600 @ 9x400.

 

[Warren21]

Ok, thanks. That makes my life a lot easier 😀... Also, with asynchronous Mem/FSB *cough*DFI RD600*cough*, does that mean I can just OC the hell out of each and not worry about it?

Also, is it better to run 3.6 GHz CPU / asynchronous 800 MHz mem or do it the old school way and take a 1:1 ratio... Is there a performance defecit for asynchronous clocks?

 

[n7]

With Intel, basically the higher, the better.

So running asyncronously would be better if it results in better frequencies. Timings play a factor of course as well.

Keep in mind that 680i mobos support running 1T, which tends to result in better performance even at the lower speeds of DDR2-800 than running 2T @ DDR2-1000 etc.

I believe the RD600 will have the same 1T option, but i can't remember.