IBM Intel Xeon E5506 4C 2.13GHz 4MB Processor Option for System x3550 M3 (feature 7731)

An entry-level quad-core upgrade for the IBM System x3550 M3, the IBM Intel Xeon E5506 4C 2.13GHz 4MB Processor Option (MPN 59Y3954) runs 4 cores at 2.13GHz with 4MB of cache. Its TDP is 80W.

Memory speed is listed at 800 MHz, so it suits a server doing light file, print or infrastructure duty rather than heavy compute. For restoring a failed processor on an older x3550 M3, matching the original model is often the simplest path.

The feature code is 7731. Quote that alongside the MPN when you compare against a configuration list.

Refurbished units come with 1 year or 3 years of warranty, and used units with 90 days. Send us your quantity for pricing.

The 800 MHz memory rating means standard, modest modules are all it can use, so there is no reason to spend extra on faster memory for this processor. It is a practical like-for-like replacement part.