CPU and RAM Question

[Airwen]

If my processor runs at 1066 MHZ do I need to get RAM that runs at the same speed. How do I match up my front side bus memory with dual channel?
I read this post and it has confused me.
http://www.tomshardware.com/forum/248870-30-which-memory-1333-1333
Any help is appreciated!

 

[cohen]

No, you won't need ram to be the same as the CPU.

I don't know what that person is talking about on that forum......

 

[Wired]

In regards to what to what i read in the post i think you would be better off getting 1066 ram to match your cpu and you probably should just use use what your motherboard says its compatible with, as for the duel channel thats not how i remember duel channel working you shouldn't have to add then together to get the speed you want if your cpu is 1066 you get 1066 memory duel channel or not

 

[TrainTrackHack]

You should have RAM that matches your FSB, not CPU speed, and we're talking about actual clockspeeds, not rated speeds i.e. DDR2-1066 runs at 533MHz (as it's Dual Data Rate, so you double it) whereas 1066FSB runs at 266MHz (FSB is quad-pumped so you quadruple the MHz to get the rated speed). Also, memory can, naturally, run slower than it's rated to run - so you can buy DDR2-800 (400MHz) for you computer that has a CPU at FSB1333 (333MHz). Running memory in dual-channel or not had nothing to do with this.

 

[Wired]

Ok so this is a stupid question but, if your motherboard fsb is 1066 then you run ddr2 533 or 667 not 1066 ram? nvm i got it

Why on the other hand does the mother board say you should run ddr2 1066 when if i understand i should be running 667 ram for a fsb of 1066-266mhz

 

[TrainTrackHack]

Why on the other hand does the mother board say you should run ddr2 1066 when if i understand i should be running 667 ram for a fsb of 1066-266mhz

It's usually considered a little mistake/mishap/typo/misunderstanding/whatever - DDR2-1066 runs at 533 MHz but does 1066MTs (megatransfers/second), and a 266MHz quad-bumped FSB does 1066MTs . Effectively 533DDR is 1066MHz because it's DUAL data rate, and 266QDR is 1066MHz because it's QUAD data rate, but it is actually slightly different and technically incorrect to say DDR-1066 runs at 1066MHz and so on...