Lenovo System x
| Roadrunner supercomputer x86 nodes (IBM System x3755 servers) | |
| Developer | IBM (2006–2014) Lenovo (2014–2017) | 
|---|---|
| Type | Server | 
| Release date | 2006 | 
| Discontinued | 2017 | 
| CPU | x86 | 
| Predecessor | eServer xSeries | 
| Successor | Lenovo ThinkSystem IBM NeXtScale | 
| Related | Lenovo ThinkServer | 
System x is a line of x86 servers produced by IBM, and later by Lenovo, as a sub-brand of IBM's System brand, alongside 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.
In January 2014, IBM announced the sale of its x86 server business to Lenovo for $2.3 billion, in a sale completed October 1, 2014.