SanDisk Extreme SSD 240GB Review


SanDisk Extreme SSD 240GB Review

SanDisk Extreme SSD 240GB

SSD vendors that make one or more components of their drives tend to do better than those who just slap commodity parts on a board and call it a day. Sounds reasonable, right? SanDisk’s Extreme SSD is yet another drive based on the LSI SandForce SF-2281 controller, a 6Gb/s SATA SSD controller with speedy sequential reads and an emphasis on hyper-fast queued random writes.

However, because it is a NAND manufacturer, SanDisk has the means to use its own 24nm toggle-mode NAND—eight 256Gb packages in the 240GB version—instead of commodity NAND. Like other SF-2281-powered drives, the Extreme SSD uses the extra 16GB of NAND for overprovisioning and write caching.

SanDisk’s Extreme is a plain black metal box with a sticker on it and speed inside.

Contrary to its name, the Extreme SSD isn’t very extreme—at least not in the sense of being unusual. It’s a good implementation of the SF-2281 controller combined with high-quality NAND, so it’s not exactly rare, but that still means it’s one of the fastest consumer drives on the planet. With sustained read speeds over 480MB/s and writes around 280MB/s, its performance is what you’d expect from a good SandForce drive—faster than the Intel 520 in reads, slower in writes. Its random performance is classic SandForce territory too—heavily optimized for high-queue-depth 4KB random writes, with over 90,000 IOPS at a queue depth of 32.

There aren’t any surprises with the SanDisk Extreme SSD, but that’s not a bad thing. It’s fast, inexpensive (just over $1/GB at this writing), and based on a proven platform. You really can’t go wrong.

SanDisk Extreme SSD 240GB


A fast, inexpensive, but fairly standard SF-2281 drive.


A fairly standard SF-2281 drive.




SanDisk Extreme SSD
OCZ Vertex 4
Patriot Pyro SE
OCZ Octane Samsung 830 Series SSD

Sustained Read (MB/s) 479.1 440.9482445.4506.4
Sustained Write (MB/s)

Seq. Read (MB/s) 503.8 463506.7432.2502.6
Seq. Write (MB/s) 278 459.3295.2285.9164.1
4KB Read (IOPS)5,0296,6324,9865,5465,513
4KB Write (IOPS)
15,244 17,16914,17910,41712,800
64KB File Read (MB/s)
64KB File Write (MB/s)441.3470.4
4KB Random Write90,060.865,111.0691,171.2622,073.9735,329.48
Max Access Time (ms)302854142931
Premiere Pro Encode Write (sec)422417424425420
PCMark Vantage x64 HDD58,36641,56861,68657,03062,168
PCMark 11 x64 SST5,2825,1715,3054,9455,257

Best scores are bolded. Our current test bed is a 3.1GHz Core i3-2100 processor on an Asus P8 P67 Pro (B3 chipset) running Windows 7 Professional 64-bit. All tests used onboard 6Gb/s SATA ports with latest Intel drivers.



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