To settle the question, Windows XP Professional ***IS*** HThreading-aware, so it will know that you only have two physical processors, and thus will use all 4 virtual processors. This means that a dual-core 820 will look like 4 virtual processors and XP Pro will utilize them.
And HThreading is not junk. On my dual-xenon rig @2GHz, with equal protiens, 2 instances will take 12 minutes each step (10 steps per hour total) where 4 will take only 3 min more per step (16 steps per hour total). Right about that 30% sweet spot that Intel brags about.
If anyone has something good to say about AMD dual-core for folding, let me know - !!!!!!z not included of course.
And HThreading is not junk. On my dual-xenon rig @2GHz, with equal protiens, 2 instances will take 12 minutes each step (10 steps per hour total) where 4 will take only 3 min more per step (16 steps per hour total). Right about that 30% sweet spot that Intel brags about.
If anyone has something good to say about AMD dual-core for folding, let me know - !!!!!!z not included of course.