Say, a bunch of us hardware techies checked out the new "hyperthreading" P4's and concluded that this was mostly hype on the part of Intel. We did some controlled tests and found no real gain at all, in almost any kind of processes. There are some long-winded and heavily technical papers on the web that go into all this, but the gist is that the only speed gains are for program processes written specifically for this method of pipelining. Mostly a marketing ploy by IBM. And, as Thalaxis says, you definitely don't get "two processors" so your rendering times won't speed up due to the "hyperthreading" capabilities of this new P4. However, Thalaxis, I've got software that looks at the "threading", and it does appear to be that Vue is executing multi-threads. But, there is no way to tell how well it is "managing" them or optimizing without looking at the program code. Everyone should note that multithreading is not the same is making use of dual processors. Vue definitely does a good job of exercising both processors in a dual system - normally to the max.