Upgrade SiliconGraphics IRIS Power Series 4D/220 Computer Memory

 Memory Specifications
Standard8 MB (removable)
Maximum64 MB with a 8MB kit on SD board / 256 MB with HD board
Slots32 sockets (8 banks of 4) on standard SD memory board
CommentsThese systems come with a standard density (SD) memory board, the MC-2 which accepts only the 8MB kits. This board can be expanded to 64MB. To expand beyond 64MB, install SGI's 32MB high density (HD) memory board, the MC-3 (H4-D32XB). This board
CPU Type25MHz MIPS R3000 RISC
Model Comments100MHz FSB

Your SiliconGraphics IRIS Power Series 4D/220 can support up to 64 MB with a 8MB kit on SD board / 256 MB with HD board of memory. For optimal system performance install the maximum amount of memory in each memory socket, this system comes with standard amount of   8 MB (removable) RAM. One or more of the sockets in the system might be already filled with memory. Whenever you upgrade, you can either add memory to one of the open sockets and/or remove memory from a filled socket and replace it with a higher capacity memory module. Select your Memory Upgrade for SiliconGraphics IRIS Power Series 4D/220.