In other words DaveU, "It ain't all science"...seriously, there are (well at least one) sites that will explain what's supposed to work well. If I had the link, I'd suggest looking it over. I didn't find it any faster to just do the above and try it both ways. You could test, just cover the variables that you can and try it. I never gained any speed, much more likely to have a bad video update (I run old equipment, computer-wise) because of the age of everything. We're the last to get the good stuff, IE: no probs with video cards, etc. that weren't a gleam in the eye of that kid down the block. Makes it interesting...😉