Memory Systems: Present Day Numbers

Type Capacity Cost Latency

Tape 16 GB $0.10/MB 120 s

DISK 2-8 GB $1.00/MB 10 ms

DRAM 256 MB $10/MB 50 ns

SRAM 16 MB $100/MB 10 ns

(off-chip)

SRAM 1 MB ?? 2 ns

(on-chip)

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