How does Hyper threading compare to dual core?

[Smartazz]

Both HT and dual core technology use similar technology, how do these two compare?

 

[LOUISSSSS]

i had a p4 3.2 HT vs my a64 2.4 x2 and the multitasking abilities is much better in the a64. with the p4 i'd experience a big slow down when doing spyware scans and virus scans or dvd shrink. with my a64 i can now do those listed and play cs:source at the same time..
forget about doing any 2 big tasks at once with HT...

 

[savvy]

http://en.wikipedia.org/wiki/Hyper-threading

It gives some information.

 

[stu1811]

HT is emulation while dual core is physical
HT enables the cpu to emulate to cpus. But only 1 process is actually running at a time.
Dual Core enables 2 processes to be run at the same time.

 

[imported_goku]

HT is definately useful, one reason why I'm sticking with my P4 system until Quad Core or Oct Core computers become more common place (at the very minimum). HT also prevents any spyware or virus or poorly written task from slowing down the whole system which can be extremely useful because I can identify said task and close it, find the problem and eliminate it.

 

[krotchy]

Hyperthreading is good in theory, bad in practice. My 3 Ghz Northwood with hyperthreading was about 1/4 as good at multi-tasking than my Opteron 170. If I had 1 process taking up a whole "core" on my northwood, I couldnt do anything else. On my Opteron, I can do anything I want with that extra core. Night and Day.

Hyperthreading only emulates two cores, it doesnt actually let you run 2 processes at the same time at full speed.

 

[Aluvus]

Usually pretty badly.