> Hyperthreading does result in an improvement of rendering speed, but 
> only 25%. This is small, but speed is speed, and any improvement is 
> good. It does make sense two run two instances, but do not expect twice 
> the rendering speed.

	Since there is a single physical CPU, I'd say the 25% speedup
is actually quite good.
	Now the question is: why does a single instance run slower
in the first place ?  Or, IOW: where do the two instances really gain
speed (file i/o operations or elsewhere) ?

	- NC

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