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SanDisk’s Extreme is a SATA III 6 GB/s SSD that is available in capacities of 120 GB, 240 GB and 480 GB. Its specifications sheet tells that its performance for sequential read is at 550 MB/s while its sequential write speed is at 550 MB/s. At low 4k random write aligned disk access, its maximum IOPS is 83,000. The drives come with a standard three year warranty, TRIM capability and SMART support.

Inside the SanDisk Extreme SSD is SandForce’s SF-2281 processor, the same processor inside most SATA III SSDs available which includes Super Talent’s TeraDrive CT3 and AData’s S510. Together with the controller are modules of SanDisk 24nm toggle mode NAND flash memory. Mean Time Between Failure (MTBF) varies for each model. The 120 GB variant has a MTBF of 2.5 million hours; the 240 GB variant has a MTBF of 2 million hours; the 480 GB variant has 1.4 million hours.


  • Sequential Read: Up to 550 MB/second
  • Sequential Write: Up to 550 MB/second
  • NAND type: MLC
  • Interface: SATA 3 6GBps
  • Controller: SandForce SF-2281
  • Form Factor: 2.5 inches
  • DRAM Cache: None
  • Power Consumption (Active): 0.6W
  • Power Consumption (Idle): N/A
  • TRIM support: Yes
  • SMART support: Yes
  • Warranty: 3 years

Part Numbers:

  • 120GB: SDSSDX-120G-G25
  • 240GB: SDSSDX-240G-G25
  • 480GB: SDSSDX-480G-G25

Price Comparison:

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The SanDisk Extreme 240GB SATA 3 SSD is a definite recommendation as it’s introductory price is as good to see as it’s performance.  In fact, the entry of the Extreme into the market is very encouraging as it might be a sign of lower prices to come.


Overall we were very impressed by the performance of the SanDisk Extreme SSD. It didn’t offer the fastest performance in every category, but it was able to snag the top spot in plenty of our tests. To come in with that level of performance just as the SandForce market was starting mature is impressive to say the least.


The SanDisk Extreme solid-state drive won’t surprise you, but it’s one of the best deals among SATA 3-based SSDs on the market.

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