Some heads up..

[xnox202]

Guys, I'm just wondering.. What's a bus width again? I'm not sure. Lets say, I have a Athlon 64, so to say its a 64bit bus width cpu?

Pretty weird actually but, i'm having this weird hardware lesson at the moment, and it says in the notes i'm reading at the moment, pentium 4 with 256 bus width, wtf?

P/S: I'm at my school now. lol, I'm thinking there's alot of wrong points written in this hardware notes. and the teacher does well explaining it. :lol:. I may have to attach the notes probarbly up here to let some of you guys read.

 

[xnox202]

Instructor continues saying Pentium 4 has faster cpu bandwidth than Athlon 64. Hmm, I need some a little bit of understanding here about different cpus and how to calculate bandwidths and stuff. Isn't pentium 4 supposed to compete with Athlon XP, thus Athlon 64 should be better than pentium 4? or something?

 

[kwchang007]

Instructor continues saying Pentium 4 has faster cpu bandwidth than Athlon 64. Hmm, I need some a little bit of understanding here about different cpus and how to calculate bandwidths and stuff. Isn't pentium 4 supposed to compete with Athlon XP, thus Athlon 64 should be better than pentium 4? or something?

Ok, what the 64 in A 64 refers to is the capability of the CPU to process 64 bit. Oh and btw, the bus on core 2's, A 64, P4, is 64 bits. Which is why current architecture is called X86-64, not X86-128.

 

[xnox202]

so if the cpu is capable to process 64bit, does it relates to the bus width?

 

[Deleted member 3]

Ok, what the 64 in A 64 refers to is the capability of the CPU to process 64 bit. Oh and btw, the bus on core 2's, A 64, P4, is 64 bits. Which is why current architecture is called X86-64, not X86-128.

Except for the fact that a 64bit CPU has nothing to do with any bus, it's internal. The width of a bus basically is the amount bits that are sent every clock. This applies to any bus, agp, pci (x/e) FSB etc.

 

[Deleted member 3]

so if the cpu is capable to process 64bit, does it relates to the bus width?

Not at all.

 

[kwchang007]

Except for the fact that a 64bit CPU has nothing to do with any bus, it's internal. The width of a bus basically is the amount bits that are sent every clock. This applies to any bus, agp, pci (x/e) FSB etc.

Yeah, I was just saying that A 64 had the 64 in it because it signified it could process 64 bits.

@xnox: the original p4 design couldn't process 64 bits but had a 64 bit bus. Same with p3.