Idle Power Consumption

Since we truncate idle times to 25µs in our Storage Bench traces, they don't give a fully accurate picture of real world power consumption as idle power consumption is not taken properly into account. Hence I'm still reporting idle power consumption as a separate benchmark because it's one of the most critical metrics when it comes evaluating an SSD for mobile use.

Unfortunately I still don't have a way to test DevSleep power consumption due to lack of platform support, but my testbed supports HIPM+DIPM power commands (also referred to as Slumber power), so the results give a rather accurate picture of real-world idle power consumption. 

Idle Power Consumption (HIPM+DIPM)

The Trion is the first OCZ SSD to include support for low-power states and that's clearly visible in our results. It's not the lowest power drive we have tested, but falls in the same range as the majority of drives. 

TRIM Validation

The move from Windows 7 to 8.1 introduced some problems with the methodology we have previously used to test TRIM functionality, so I had to come up with a new way to test. I tested a couple of different methods, but ultimately I decided to go with the easiest one that can actually be used by anyone. The software is simply called trimcheck and it was made by a developer that goes by the name CyberShadow in GitHub. 

Trimcheck tests TRIM by creating a small, unique file and then deleting it. Next the program will check whether the data is still accessible by reading the raw LBA locations. If the data that is returned by the drive is all zeros, it has received the TRIM command and TRIM is functional. 

ATTO & AS-SSD Final Words
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  • extide - Thursday, July 9, 2015 - link

    Published endurance ratings != actual endurance!!!

    Published endurance ratings are only used for two reasons:
    1) To keep write heavy enterprize users away
    2) For warranty purposes (A published endurance rating gives a hard cutoff for the end of warranty period, besides the time period running out)

    ACTUAL endurance of the NAND is usually WAY higher, especially with the Samsung 850 series drives.
  • Solid State Brain - Thursday, July 9, 2015 - link

    It looks like these drives have had their endurance validated according to the JEDEC JESD219A client workload specification, which means it's actually a meaningful value rather than one arbitrarily set by the manufacturer to keep heavy users away.
  • jann5s - Thursday, July 9, 2015 - link

    I'm really really really curious to some data retention measurements. I would appreciate it greatly if AT would throw some MLC and TLC SSD's in the vault for half a year and then report back with an awesome review!
  • Ken_g6 - Thursday, July 9, 2015 - link

    Looks like the Trion is a drive to bypass. Maybe they'd do better with a drive called the "Succeedon".
  • camelNotation - Thursday, July 9, 2015 - link

    LOL nice one
  • Impulses - Thursday, July 9, 2015 - link

    Samsung's 850 line looks poised to have as much staying power as the 830s (luckily I skipped the buggy 840 EVO since I wasn't looking for more capacity at the time)... Looking forward to some BF or Amazon's 20th deals on that 1TB 850 EVO! (tho I probably should've just bought it when it hit $340 not long ago) Is Samsung releasing a new series early next year or are they all about PCI-E/M2 moving forward?
  • The_Assimilator - Thursday, July 9, 2015 - link

    2.5" SSDs aren't going away anytime soon, so I'm sure we'll see Samsung 860 series SSDs in the future. How soon is the question, because it seems there's not much that can be done to speed up drives without having them bottlenecked by SATA3 and AHCI.
  • Gigaplex - Thursday, July 9, 2015 - link

    The advances for the 860 series are likely to focus on density rather than performance upgrades. However, there is still a lot of room for improvement in random IO performance.
  • Byte - Thursday, July 9, 2015 - link

    Samsung already announced 2TB 850 Evo and Pros, the prices look pretty good also. Its gonna be hard to top the 850 series!

    http://www.bit-tech.net/news/hardware/2015/07/07/s...
  • eek2121 - Thursday, July 9, 2015 - link

    You guys act like the 840 EVO was the worst drive in the world. I've had 0 problems with mine in the year that i've owned it and couldn't be happier.

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