Linux on dual Intel Xenon systems

Hi, Does SuSE Linux 7.1 run on dual Intel Xenon ("Pentium 4") systems? As far as I know, Compaq, Dell, and HP sell these computers with MS Windows only. (Compaq: Evo Workstation W6000, W8000; Dell: Precision Workstation 530; HP: Workstation x4000). Is there any technical reason for not using Linux on these machines or is it just a marketing strategy? -- Alexandr.Malusek@imv.liu.se