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RealSSD C300

RealSSD C300Micron’s Crucial RealSSD C300 was early on the market with support for SATA 3, thus gaining a huge advantage over the competition with higher transfer speeds (when allowed by the interface). It was initially launched in 128GB and 256GB capacities and a 64GB version was added later, with somewhat slower sequential write speeds.

The C300 uses 34nm NAND flash modules and offers sequential read speeds of up to 355MB/s and (all models) write speeds up to 215MB/s for the 256GB model, 140MB/s for the 128GB model and 75MB/s for the 64GB model. 355MB/s can only be achieved by running the drives over the SATA 3 interface. Using SATA 2, the drives have a maximum read rate of 265MB/s.


  • Sequential Read: 355 MB/s (256GB)
  • Sequential Write: 215 MB/s (256GB)
  • Interface: SATA 3
  • NAND Type: MLC
  • Controller: Marvell
  • Form Factor: 2.5 inch
  • DRAM Cache: 128 MB
  • Voltage: 5V ±5%
  • Power Consumption (active): 1.7-2.1W Read / 2.4-4.3W Write
  • Power Consumption (idle): 0.092W
  • TRIM Support: Yes
  • S.M.A.R.T. Support: Yes
  • MTBF: 1,200,000 hours
  • Reviews:


    You can’t argue with sequential read and write speeds of up to 355 MB/s and 215 MB/s in a consumer based SSD. This is how SSDs should perform and we can’t wait to see more SATA 6 Gb/s drives come on the market down the road



    In conclusion, Micron deserves credit for bringing SATA 6Gb/s support to Solid State Drive products. The Crucial RealSSD-C300 is the first to offer ONFI 2.1 synchronous NAND flash, and makes good on delivering 355/215 MBps bandwidth performance.

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