The Tablet PC hasn’t even officially debuted yet, and CNET is reporting that there are already rivalries developing among Tablet PC manufacturers, with Dell offshoot Motion Computing is going after the high-end of the market with its M1200 model. The M1200 has better specs than many of the other Tablet PCs out there, with an 866MHz Pentium III processor, a 12.1-inch screen, up to 1GB of memory, and a 20GB, 40GB or 60GB hard drive.