At a time when most of the attention is on dual-core systems, IBM is <A HREF="http://www.eweek.com/article2/0,1895,2007480,00.asp?kc=EWINFEMNL082306EOAD">growing the use of its quad-core technology.</A> The Armonk company is announcing that it is enhancing four entry-level System p servers with a faster Power5+ chip and the Quad-Core Module. IBM introduced the technology in February with the p5 550Q. In addition, the new servers will be running a faster Power5+, which runs at 1.65GHz, rather than 1.5GHz.