Athlon 64.... 333 or 400FSB?

[Corsairpro]

I remember reading about the Athlon 64 having a 333FSB... but now that the barton will be getting a 400MHz FSB... will the Athlon 64 be behind the times or can we expect it to also have a 400MHz FSB?

 

[dguy6789]

if i remember the athlon 64 is supposed to be 600 FSB.

 

[Corsairpro]

really, i'd like to read about that... anyone have a link?

 

[WerewolfX]

Remember the Athlon64 will have a built in memory controller so the FSB or speed between the controllers is not as much of an issue.

Furthermore, the athlon 64 uses Hyper Transport links between the CPU and other Component Bridges.

 

[MikeMike]

im gunna say neither

the other reply is right about it using onboard memory controller

 

[ChampionAtTufshop]

im pretty sure its an 800mhz fsb between the memory controller and cpu or something like that

 

[Corsairpro]

But is it still going to be stuck on a 333 bus from the main memory to the on die memory controller?

 

[JeremiahTheGreat]

no, there is no "bus"..

i like to think of it this way.. hell if i know how to explain it properly.

shove in PC2700, the bus is at 333

shove in pc3200, the bus is at 400

put in dual channel pc3200, its at 800

put in dual channel DDr-II ram its at

 

[EdipisReks]

there is no real front side bus with the Athlon 64, but AMD has said that the memory bandwidth between the CPU and the components will be the equivalent of an 800 mHz FSB.

 

[AtomicDude512]

EdipisRex: You got it. It is more a matter of supporting different memory speeds, the 2GHz Athlon 64 is supposed to be able to fully utilize PC2700 memory.

JeremiahTheGreat: You are misinformed, only the Opterons will have Dual-Channel, current designs for the Athlon 64 are (sadly) Single-Channel DDR.

CorsairPro: The internal bandwidth to the memory controller is supposed to be about 18GB/s on the 2GHz models. The memory controller also is supposed to be twice as responsive as competing brands. Of course, that varies based on clock speed.

Here is a solid artice on the Athlon 64 and Opteron that may contain more than you care to know.

 

[Corsairpro]

from reading that article, it seems that the FSB from the memory to the controller will actually fluctuate up or down based on the actual frequency of the processor... wow... i'm going to have to RE-Learn this stuff