How many of experienced a slowdown with hyperthreading?

Albuquerque

Red-headed step child
Moderator
Veteran
Hey all,

Wanted to get a feel for how many of you guys either directly experienced or have witnessed any noteable slowdown on any given application when enabling hyperthreading on an XP SP1 (or later) machine. When HT first came out, there were all those people who cried wolf because there were extreme cases of somehow Intel's SMT functionality slowing apps to a crawl or something.

I'm assuming this has been "fixed" by way of further service pack revision to XP, and/or by simply not using really old crappy single-threaded 16 bit apps. However, it's always possible that I've missed something...

I'm not worried about a 1-5% drop, I'm looking for the big ticket items like a 20% drop or worse. And in such cases, was it directly linked to the software, hardware, end client being dumb?

Thanks for any assistance you can provide.
 
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