yes, their one in the same. in addition A M D does not offer a similar function. the decrease to non multi threaded apts is only one or 2 percent and the up side may be 8 or9 percent improvement. depending on what degree multi threading is incorporated into the program. the real multi threaded dual processors offer the end user the best hope for drastic improvement. apts on a dual system may have 50 percent improvement with well designed applications. unfortunately few apts support it making dual systems not a good value for most of us. more than likely the zipper performance you experience with the 3.4 intel is due to its large cache, bigger than the A M D processor. realize the more in cache the less swapping is needed, and cache memory is always faster than info on the hard drive. bill -- To post a message to the list, send it to jfw@xxxxxxxxxxxxx To unsubscribe from this mailing list, send a message to jfw-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. Archives located at: //www.freelists.org/archives/jfw If you have any concerns about the list, post received from the list, or the way the list is being run, do not post them to the list. Rather contact the list owner at jfw-admins@xxxxxxxxxxxxxx