IBM System x

The IBM System x computers formed a sub-brand of International Business Machines (IBM's) System brand servers, focusing on x86 processor equipped servers. (the other System sub-brands having the names IBM Power Systems, IBM System z and IBM System Storage). In addition, IBM System x was the main component of the IBM System Cluster 1350 solution.

The division has been sold to Lenovo, effective October 1st 2014.

Starting out as IBM PC Server, rebranded Netfinity, then eServer xSeries and now System x, these servers are distinguished by being based on off-the-shelf x86 CPUs; IBM positions them as their "low end" or "entry" offering. Previously IBM servers based on AMD Opteron CPUs did not share the xSeries brand; instead they fell directly under the eServer umbrella. However, current AMD Opteron-based servers fall under the System x brand.

Not to be confused with a different IBM product with a similar name, NetFinity (notice the capital F).

The numbering scheme started off similar to that of the IBM PC Servers, but additional ranges were added, like the entry-level 1000 model later on. Models ending with an R, are rack-mount.

Some Netfinity servers used IBM's C2T cabling scheme for Keyboard/Video/Mouse.

Many xSeries servers used IBM's C2T cabling scheme for Keyboard/Video/Mouse.

For marketing reasons the AMD processor based e325, e326 and e326m and the BladeCenter which supports non-Intel processor products were not branded xSeries, but were instead placed directly under the eServer brand. The xSeries brand was limited to only Intel-based server products.

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