Hi, I have a PX-712A running un a PIII 1.0Ghz. No problem. But to give you a better feeling, I have a DVD burner (Liteon 811s) running now in a box with a 440LX chipset and a Pentium II / 333Mhz !!!.... That is around 4 times slower than yours, processor wise, and still can read DVDs @ full 16x and write @ full 8x.