What exactly is FSB1333 support?

[vz777]

Every article I read assumes I know what this means. I don't.

Is FSB1333 support a reason to buy a 680i motherboard, to give myself a better upgrade path?

 

[Dante_Jose_Cuervo]

Basically it just means that the FSB can go up to 1333MHz, so yes, more upgradability.

 

[vz777]

Thanks, I'm still unsure. Dont we overclock way over 1333 anyway?

Here's my math:

Current C2D run (at stock) at 266MHz, wich we multiply by 4, to get the 1066 number.

The new ones will run (at stock) at 333MHz, so multiply by 4 to 1333.

Now, I may be missing something, but isn't overclocking running at higher FSB speeds than specified by intel? Isn't an OC'd C2D running at 400MHz FSB (pretty routine around here, I think) allready faster than running at 333? It would be 400 multiplied by 4 to 1600MHz.

1066 < 1333 < 1600

Either I'm misunderstanding something big, or most current generation, overclockable mobos are allready more than 1333 compatible. Maybe all they need is a bios update?

If someone could tell me if this is right, or explain why it's wrong, I would appreciate it.

 

[Dante_Jose_Cuervo]

I'm kinda curious myself, but I'm guessing it has to do with those new CPUs that are coming out with the 1333MHz FSB out of the box, but that's just my guess.

 

[darkguset]

The 1333MHz is an OFFICIAL support. Which means that now you know that if you buy a 1333MHz CPU and a 1333MHz mobo they will (or at least should, lol) work.

Your speculations and calculations are correct, its just the official support that changed.

 

[Dante_Jose_Cuervo]

Ahh, I figured. Well, I guess whatever works for the i680 chipset, I'm using the 5000P so meh.

 

[enewmen]

Every article I read assumes I know what this means. I don't.

Is FSB1333 support a reason to buy a 680i motherboard, to give myself a better upgrade path?

Do not worry about 1333 FSB, both the 680i and cheaper p965 support this.
The problem is voltage. If the Penryn uses a different voltages, then you are out of luck and need to wait for bearlake.
I personally think it's stupid to support 1333 Mhz and not Penryn , but only time will tell.
Such as, the p4 and C2D both use the same 775 socket, but because of the different voltages, the older 800 series motherboards will not run C2D.

 

[T8RR8R]

Higher FSB means faster communications between components. Basically it's for those people that don't want to OC but still have a decent FSB. LOL not that any of us are one of those people though.

 

[kaoru780]

Will a Core 2 Duo with 1333fsb run a a mobo wif 800fsb? If it will, how is the performance impact?

 

[Mandrake_]

If the Nehalem uses a different voltages, then you are out of luck and need to wait for bearlake.

Bearlake will still be Socket 775. Nehalem will need a new socket for the IMC and all the other stuff their putting in it.

 

[enewmen]

If the Nehalem uses a different voltages, then you are out of luck and need to wait for bearlake.

Bearlake will still be Socket 775. Nehalem will need a new socket for the IMC and all the other stuff their putting in it.
You're right, I ment Penryn. I corrected this.