Very confused about FSB

[Danklin]

I apologize for asking such a noob question, but i am so lost when it comes to FSB.

The motherboard i just purchased has FSB's of 1600/1333/1066/800MHz.

Does this just mean i can get a cpu with either of those FSB's? Do i need to change it to tell it what fsb i have when i build the system?

Also if i do oc, am i only able to go as far as 400(400X4) with my fsb?

Again sorry for the lame question. please be kind. lol

 

[caniba]

Yes it supports a cpu with any of those FSB and the same socket (775 for example). You do not have to change anything. If you are interested in OC please read up first and when you feel ready we will help you out.

 

[aford10]

Your cpu FSB needs to match the boards FSB. Some boards can then OC past the stated FSB (but not all, it depends on the board).

 

[Danklin]

Thanks for the replies. I understand that the cpu needs to match one of the fsb's that the board supports.

But my question is, can i go past that? Say i oc my cpu past 400MHz actual FSB(1600 effective), anything above that would put the board over its effective highest FSB of 1600.

 

[t85us]

the CPU speed = FSBxMultiplier.
CPU speed will be the cpu's internal speed, and here comes "trouble"
for every "multipliered" frequency tact, there will be an external cpu speed. tha t external speed wll be your FSB speed (ie. 200, 233, 266, ...400 effective speed, or FSB400, FSB800, FSB1600).
for ex, if the limit of your mobo is FSB1600, then you cannot get past it. you can achieve a high internal CPU freq only, if your CPU will support a high enough multiplier.
so this is the theory.....
the safest thing for a cpu upgrade is to check the mobo's cpu support list