actually in a quad core you get a net lost with large scnes.
on dual cores is about 95% almost 100% depending of teh kind of scene.
on the new intel nahelalen when no using hypertreading yidl is mopre tha 90% on each core, with hpetyreading no gain at all, in fat a net lost.
it have nothing to do with settiong thread priority high or low, in fact it shoul be set to the lower possible or what ever the sytem deside, teh problem in teh architerue, intel CPU are no designed fo lwo latency task swithig.
I will way for Larrabe which I think will smoke all the GPUs, until then dual cores is the best bet for Netwon, and for people with Nahelan 3 or 4 thread is the best option.
For people with Quad core I recomned using only two threads, using three or four is a bad because they are not really muticores and memory have to go trough the bus killing the performance.
Netwon really stress the CPU.
you can test it youself,
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