IBM x3250 M3 Accessories
| FC | Max Memory | Max # CPUs & Speed | Storage Bays (Front) |
| 4251 (M3) | 32GB (Registered / Buffered) or 16GB (Unbuffered) via 6 DIMM Slots | 1x Xeon X3460 2.8GHz Quad Core (1156 Socket) | 2x Simple-Swap SATA (LFF) |
| 4252 (M3) | 32GB (Registered / Buffered) or 16GB (Unbuffered) via 6 DIMM Slots | 1x Xeon X3460 2.8GHz Quad Core (1156 Socket) | 2x Simple-Swap SATA (LFF) 2x Hot-Swap SATA / SAS (LFF) 4x Hot-Swap SAS / SATA (SFF) |
| 4261 (M3) | 32GB (Registered / Buffered) or 16GB (Unbuffered) via 6 DIMM Slots | 1x Xeon X3460 2.8GHz Quad Core (1156 Socket) | 2x Simple-Swap SATA (LFF) 2x Hot-Swap SATA / SAS (LFF) 4x Hot-Swap SAS / SATA (SFF) |
| NOTES | *Do not mix unbuffered (unregistered) and buffered (Registered) DIMMS! | *These represent the FASTEST CPU upgrade options. Contact us for other CPU upgrade options. | *Do not intermix drive tray types. Intermixing SAS / SATA drives depends on the ServeRAID controller. |
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