Is HyperTransport is the equivalant of HyperThreading ?

[The.Spiral]

Well... you heard me!

 

[lePobz]

I think HyperTransport is the transfer between the CPU and the northbridge/rest of the mobo, where as HyperThreading is how the CPU deals with instructions sent to it via the software.

I think.

 

[jonbob]

HyperTransport is the name of a bus used by newer AMD 64-bit CPUs.

HyperThreading is a word used by Intel to denote the technology they used to make one CPU act like two in so far that it can (sort of) run two threads at once. (A thread being equivalent to a 'task' that the processor performs, not a task sees it, one of these can have many threads within it - consider a game - a single task, having one thread processing grraphics, one for physics, one for sound and so on.)

A bit rough an explanation but hopefully accurate on the important bits.

 

[gh0st]

its amazing how many people get mixed upbetween the two but jonbobs explaination is right

 

[Asus]

The sort explanation is that Hypertransport is a chip-to-chip connection while Hyperthreading is SMT (Simultaneous Multi-Threading) which allows the P4 to perform 2 threads at the same time inorder to make the CPU more efficent.

Ready for a technical explanation?
-Hypertransport is a link (similar to a bus) between two points which can transfer data up and down at the same time unlike the normal FSB (One way at a time). Opterons usually have 2 or 3 links (Northbridge to CPU/CPU to CPU) while A64's have 1 (NB to CPU), I believe. Intel has said they will get rid of the standard FSB and move to a point-to-point Link similar to HT down the road.

-Hyperthreading is a SMT (Simultaneous MultiThreading) design that allows the CPU to excecute more than 1 thread at the same time. Normally, CPUs will multitasking by using time-slice (taking turns very quickly) between threads/applications. If an Application is multithreaded then they can take advantage of hyperthreading. The downside to Hyperthreading is that it is sharing resources between two threads in the one CPU. If one thread hogs the resources then the other thread chokes. Though, SMP (Simultaneous MultiProcessing), Dual Processors, is better since it uses 2 CPUs which each have their own resources and can work through threads quicker plus they can handle the more demanding processes better.

 

[The.Spiral]

All right, thanks! I got mixed up because they both use "HT" as an abbreviation and I thought that HyperTransport was just another name for HyperThreading, because it was copyrighted or something...

Is there a winner between both?

 

[Asus]

Um do you like cars or girls? is there a winner?
They don't have anything in common, really.

 

[The.Spiral]

lol, ok, thanks...