well, back on the system I am testing, i7 930, hyper threading does allow for smoother video as you fly around one of the busiest areas on a high population server, but with hyperthreading turned off, it becomes a slide show on both main accounts as well as slaves. I played around with some things this morning and corrected the follow breaking issue, but it still isn't as agile as when hyperthreading is turned on, as there appears to be a queuing of keypresses, meaning I can stop pressing buttons and my button presses are still going through for up to two - three spell casts.

returning to the OP question, 10 boxing on one machine, we have to take care when advising and quoting tests that are typical of no more than 5 boxing, as most of the community minus a handful, do not play more than five accounts. I can see that hyperthreading really doesn't offer to much of a difference at the five boxing lvl, but when we start to push 10 clients on the same machine, its an edge that is worth it even if its an "older" technology die process, especially if you can get it for or below the same price. so there is your evidence, though its not a screenshot with a numerical figure and bar graph on it :P On another note, more to the whole viability of trial accounts to test your end game machine setup, both setup handled flying around durator nicely, though again with hyperthreading enabled, it was still more fluid than with it disabled.

I must admit though that all I am doing is cycling between having hyperthreading on vs it not on with a stock clock/system. The i5 does have a faster clock speed than the i7 930 and there is a possibility that it may just be enough to push it to the performance of the slower clocked i7 with hyperthreading enabled. What is clear to me though, when 9 boxing, hyperthreading does help an i7 system as 9 boxing does approach the limits of the processor.

gl on your setup and please provide feedback on what you go with and what you find!