Review: Intel's Series 335 delivers more SSD for less money

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At a Glance
  • Intel 335 Series 240GB SSD

Intel has revved up its mainstream SSD line from the Series 330 to the Series 335, and the company sent over a 240GB model for evaluation (and 240GB is apparently the only capacity it is launching this series with). The new drives feature 20nm NAND flash memory, compared with the 25nm chips in the older series, but Intel continues to use an LSI/SandForce SF-2281 controller with custom Intel firmware. The company uses the same controller in its Series 330 and Series 520 drives.

But what may be of most interest to consumers is that the Series 335 is significantly cheaper per gigabyte: Intel expects this 240GB drive to cost about the same as a 180GB Series 330. And while the product was officially embargoed until 8:30 a.m. on October 29, we saw it listed for sale online the evening of October 28 at prices between $184 and $225, including shipping.

Like its most recent predecessors, the Series 335 is outfitted with a SATA revision 3.0 (6gbits/s) interface, and the drive comes housed inside a 2.5-inch enclosure that is 9.5mm thick. That thick profile renders it unsuitable for many current ultraportables; however, the stout of heart can easily remove the board from its enclosure and fit it inside a thinner case or install it directly into a vacant drive bay (although doing either will likely void Intel’s three-year warranty).

To judge the unit's performance, the PCWorld Labs put it through our 10GB copy and read tests. Keeping in mind that our current test bed uses a 7200-rpm hard drive to feed and read data from our test subjects, the 335 performed very well. It wrote our 10GB mix of files and folders at 93.2MBps and read them at 57.9MBps; and it wrote our single 10GB file at 124.1MBps while reading it at 129.8MBps.

I conducted some testing outside the lab by replacing the 128GB Kingston SSDNow V Series in my AMD e-450-based laptop with the 240GB 335. The Kingston remains capable in spite of its age, but no one would describe it as a blinding-fast SSD, as evidenced by its PassMark hard-disk score of 260.7. Intel’s 240GB Series 335 drive scored a 2078—nearly 10 times faster. The feel of the system was obviously quite a bit snappier.

Intel’s 20nm NAND flash renders the Series 335 a step up from Intel’s earlier SSDs, but the aggressive pricing is probably the better news for consumers—and it could be bad news for the slew of manufacturers that recently announced new hybrid hard drives.

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At a Glance
  • Intel's move to 20nm NAND flash renders higher-capacity SSDs more affordable.


    • Lower cost per gigabyte than Intel's previous-generation SSDs
    • Free Intel SSD Toolbox and data migration software


    • 9.5mm profile renders it too thick for ultraportables
    • SSDs remain considerably more expensive than mechanical hard drives
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