HyperThreading is most definitely not marchitecture. It's Intel's (hokey) name for Simultaneous MultiThreading. It is a hardware implementaiton of multithreading; basically, what it does is allow the processor to keep more execution units busy when running multithreaded software. In Cinema4D, it almost invariably results in a 20% performance increase. If you want information about technology, avoid THG. If you want the fastest gun in the west, get a Pentium4. Number two is an Opteron. The best value is still an Athlon, though. Especially if you stuff it in one of those little Shuttle boxes, which make building your own machine almost trivially easy. :)