The Octane allows 256 MB to 8 GB of system memory, using proprietary 200-pin DIMMs. There are two system board revisions. The first revision (part number 030-0887-00x, usually distinguished by a black handle) only supports 2GB of RAM while the later one (part number 030-1467-001, with a silver handle) supports up to 8GB. The -0887 revision of the mainboard will work with all 32-128 MB DIMMS and the '''stacked''' variant of 256MB DIMMS, but not the later single-board version (SGI P/N 9010036). The memory subsystem has vast reserves of bandwidth that can be directly served by the Xbow router to any [[XIO]] card.
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The Octane allows 256 MB to 8 GB of system memory, using proprietary 200-pin [[DIMM]]s. There are two system board revisions. The first revision (part number 030-0887-00x, usually distinguished by a black handle) only supports 2GB of RAM while the later one (part number 030-1467-001, with a silver handle) supports up to 8GB. The -0887 revision of the mainboard will work with all 32-128 MB DIMMS and the '''stacked''' variant of 256MB DIMMS, but not the later single-board version (SGI P/N 9010036). The memory subsystem has vast reserves of bandwidth that can be directly served by the Xbow router to any [[XIO]] card.
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The Octane's memory controller is aptly named HEART. It acts as a controller between the processor, the memory (SDRAM) and the XIO bus.
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The Octane's memory controller is aptly named HEART. It acts as a controller between the processor, the memory ([[SDRAM]]) and the XIO bus.