Intel claims that even applications not written to take advantage will see a 5%-20% performace increase due to alternate threads being available. However I have seen many people claim that _ONLY_ apps writting to take advantage of two procs can see any benifit at all.

Truth is we are just going to have to wait for Tomshardware or someone to do some performance testing and see what kind of performance boost is actually there.

If you ever do any video editing, when you begin to build preview files (rendering) you will see with hyper threading that two files will be being built at the same time at the same speed as just one. If you use dual processors and hyper threading you will see four files being built all at the same time and speed.