All Pentium 3's above 600MHz (650+) are Coppermines. The 650 is an E, which is a Coppermine running at 100MHz FSB. EB Coppermines only run at 600MHz, 667MHz, 733MHz, 800MHz, 866MHz, and 933MHz. I refrain from saying the 1GHz, because it's not available 🙂. E Coppermines run at multiplies of 50MHz @ 500MHz and higher, (550, 600, 650, 700, 750,).