IBM is the latest major OEM to <A HREF="http://www.eweek.com/c/a/Infrastructure/IBM-Adds-QuadCore-Opterons-to-the-Mix/?kc=EWKNLENT053008STR4">add Advanced Micro Device's quad-core Opteron processors</A> to its server portfolio. The company will now officially begin selling three different System x servers that use AMD's quad-core chip, formally code-named Barcelona. The three systems are the System x3455, x3655 and x3755.

The announcement marks a long-awaited milestone for AMD. Now, all four of the major server vendors--Hewlett-Packard, Dell, Sun Microsystems and IBM--along with a host of smaller system vendors now offer quad-core Opterons within their product portfolios.