Confirmation regarding memory speed and FSB

[Arla]

Greetings, everyone!

So, as the topic states I just wanna confirm what I suspect and have found during my browsing & searching the forum.

If I were to get a new CPU and run it at 4.0 ghz (400 x 10 or something) that means the bus is 400 mhz and rated fsb is 1600 mhz, right?

And now if I were to get some RAM for it too, I would only need 800 mhz in dual-channel, correct? 800 x 2 = 1600 mhz?

I had originally thought of getting 1600 mhz but they're quite expensive

The above statements goes for ddr2, I think. Not sure at all how it would look for ddr3. Anyway, answers are always appreciated!

 

[beurling]

My processor is at 445x9

This means each one of my DDR2-800 sticks has to run at 445mhz (445x2 = 890Mhz Total).

DDR2-800 dual channel means each stick runs at 400Mhz.

 

[Scotteq]

FSB = 4 x base speed. So: 400 x 4 = 1600
RAM = 2 x base speed. So: 400 x 2 = 800

 

[Arla]

My processor is at 445x9

This means each one of my DDR2-800 sticks has to run at 445mhz (445x2 = 890Mhz Total).

DDR2-800 dual channel means each stick runs at 400Mhz.

445x9 is 4005 mhz, nicey nice

And you're running ddr2-800 too, albeit a bit overclocked (90 mhz if i'm thinking in the right terms).. Interesting.

Well, that pretty much explains it. No need to buy 1600 mhz-memory sticks then, hooray!

DDR2-800 seem to suit my needs for my upcoming CPU!
Thanks for the answer guys, really appreciate it.. Kudos.