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RAM doubler

A software technique that compresses the contents of memory, thereby doubling (more or less) its available capacity. Used in the 1990s when memory was expensive, MagnaRAM was a popular RAM doubler that was also part of Quarterdeck's extended memory manager (see QEMM). MagnaRAM inserted itself into the virtual memory system, compressing the contents of memory headed for the hard disk in its own buffer. When full, the buffer contents were copied to disk.


(Quarterdeck EMM) A popular DOS and Windows memory manager developed by Quarterdeck that was very popular in the DOS-only days. It also managed memory efficiently under Windows. Symantec, which acquired Quarterdeck in 1999, no longer supports QEMM.

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Rainbow SeriesRAM latency
raised floorRAM memory
RallyRAM Mobile
RAMRAM module
RAM-based storageRAM network
RAM cacheRAM parity
RAM cardRAM raid
RAM chipRAM refresh
RAM cramRAM resident
RAM diskRAM vs. hard disk

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