On one of my Celeron 366 PCs (with LTR-32123S XS0Z), I have noticed that CPU usage is between 0 and 10 percent when running a CD Speed simulation at 32x, but it is between 90 and 100 percent when burning a 74-min ISO with Nero 5.5.10.35 from the hard drive at 32x. Has anyone else noticed anything like this?
Edit: With a LTR-48125W on this computer, CD Speed will allow 48x burning, but I can't burn at 48x without the buffer-underrun protection being used frequently.