HP ProLiant DL385 Certifications Product Versions Level Red Hat Enterprise Linux (x86_64) 4.x Certified [1] Red Hat Enterprise Linux (i386) 4.1 - 4.x Certified [2] Additional Notes In which update of Red Hat Enterprise Linux 4 are dual core CPUs supported? In which update of Red Hat Enterprise Linux 4 are dual core CPUs supported? Vendor: Hewlett-Packard Hewlett-Packard web site