Lenovo System x
IBM server computer
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.
History
Starting out with the PS/2 Server, then the IBM PC Server, rebranded Netfinity, then eServer xSeries and finally System x, these servers are distinguished by being based on off-the-shelf x86 CPUs; IBM positioned them as their "low end" or "entry" offering compared to their POWER and Mainframe products.
Previously IBM servers based on AMD Opteron CPUs did not share the xSeries brand; instead they fell directly under the eServer umbrella. However, later AMD Opteron-based servers did fall under the System x brand.
Predecessors
IBM PS/2 Server
IBM PS/2 Server 85 (Type 9585), 1992
IBM PS/2 Server 95 (Types 8595, 9595, 9595A), 1990–1992
IBM PS/2 Server 195, 1993
IBM PS/2 Server 295, 1992
IBM PC Server
PC Server range
IBM PC Server 300, 1994
IBM PC Server 310 (PCI/ISA), 1996
IBM PC Server 315 (PCI/ISA), 1996
IBM PC Server 320 (PCI/EISA), 1996
IBM PC Server 325 (PCI/EISA), 1996
IBM PC Server 330 (PCI/EISA), 1997
IBM PC Server 500 (MCA), 1994
IBM PC Server 520 (PCI/EISA or PCI/MCA), 1995-1996
IBM PC Server 704 (PCI/EISA), 1996
IBM PC Server 720 (PCI/MCA), 1995-1996
Numbering scheme
300 range for high-volume, entry level servers
500 range for midrange
700 range for high-end.
IBM Netfinity
1998–2001 server line; Not to be confused with a software IBM product with a similar name, NetFinity (notice the capital F).
Netfinity range
IBM Netfinity 1000
IBM Netfinity 3000, 3500
IBM Netfinity 4000R, 4500R
IBM Netfinity 5000, 5100, 5500, 5500-M10, 5500-M20, 5600
IBM Netfinity 6000R
IBM Netfinity 7000, 7000-M10, 7100, 7600
IBM Netfinity 8500R
Numbering scheme
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.
The public source identifies “Lenovo System x” as iBM server computer. This brief keeps that definition visible, then builds a research path around Lenovo, System and server.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Lenovo System x”, the useful work is to connect “iBM server computer” to the records capable of establishing context and consequence.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 8, 2026. The linked authority identifier is Q1583548. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1350, 2014, 1992 and 1990.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
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- Establish the record: confirm the title “Lenovo System x”, its source revision and the description used here.
- Expand the search: follow Lenovo System x primary sources, Lenovo System x archive and Lenovo research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Lenovo System x” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.