IBM Power6 Entry Server

IBM Power 520 (8203-E4A)

You have a Power 520 8203-E4A. Here's what that means in 2026: IBM's entry-level Power6 workhorse, out of standard IBM support since March 2019.

Machine type: 8203-E4A Software tier: P05, P10

The Power 520 (8203-E4A) was IBM's entry-level Power6 server, the workhorse behind a large share of small and midsize IBM i deployments in the late 2000s and early 2010s. It is also, for the same reason, one of the most common systems we still hear about today from shops that never got around to replacing it.

Power 520 at a glance

Machine Type8203-E4A
Form Factor4U rack or tower
Max Cores4
Clock Speed4.2-4.7 GHz

Where it stands in 2026

Power 520 lifecycle status

MilestoneDateWhat It Means
End of standard IBM supportMarch 31, 2019IBM no longer provides hardware maintenance, machine code updates, or security patches.
IBM i ceilingApproximately IBM i 7.1Several releases behind current IBM i, with no OS upgrade path on this hardware.

Dates per IBM Power6 end-of-service announcement letter 917-163.

See our maintenance page for third-party support options and our migration comparison for what a modern replacement actually looks like.

Sources

IBM no longer sells the Power 520 new. Used and refurbished units, replacement parts, and third-party maintenance contracts remain available through IBM Power hardware resellers and TPM providers; see our vendor directory.