BiTMICRO made a number of introductions and announcements in 1999 around flash-based SSDs including an 18 GB 3.5 in SSD.[19] Fusion-io announced a PCIe-based SSD with 100,000 input/output operations per second (IOPS) of performance in a single card with capacities up to 320 gigabytes in 2007.[20] At Cebit 2009, OCZ demonstrated a 1 terabyte (TB) flash SSD using a PCI Express ×8 interface. It achieves a maximum write speed of 654 megabytes per second (MB/s) and maximum read speed of 712 MB/s.[21] In December 2009, Micron Technology announced the world's first SSD using a 6 gigabits per second (Gbit/s) or 600 (MB/s) SATA interface.[22]
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| PCI attached IO Accelerator SSD |
from http://en.wikipedia.org/wiki/Solid-state_drive
we can utilize SSD to replace normal HDD in OS for better performance while reading and writing IO will be involved.
Please note that SSD can achieve roughly 100,000 read/write per-second, which is about 10 micro-seconds per operation if data size involved is less than 7KB referring to the throughput of 712MB/s. This speed is still not comparable to read/write from DDR SDRAM. And Samsung has developed the first DDR4 RAM that is even faster.
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