Red Hat Enterprise Linux v.4, released in February 2005, provides significant technology enhancements over the v.3 release. Areas of specific development include improvements in security capabilities, increased server performance and scalability, and enhanced desktop capabilitiesall while ensuring a high level of compatibility with prior releases. Red Hat Enterprise Linux supports a wide range hardware and software applications, and is the world's leading enterprise-focused Linux environment. Ideal for power users and a wide range of high-performance technical client applications such as visualization, software development, and engineering design. Red Hat Enterprise Linux WS supports large-memory client systems with up to two CPUs.