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Results: Power Consumption

SanDisk Ultra Plus SSD Reviewed At 64, 128, And 256 GB
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Idle Power Consumption

Idle consumption is the most important power metric for consumer and client SSDs. After all, solid-state drives complete host commands quickly, and then drop back down to idle. Aside from the occasional background garbage collection and house keeping, a modern SSD spends most of its life doing very little. Enterprise-oriented drives are more frequently used at full tilt, making their idle power numbers far less important. But this just isn't the case on the desktop, where the demands of client and consumer computing leave most SSDs sitting on their hands for long stretches of time.

In terms of active idle power consumption, the three Ultra Plus SSDs end up in the middle. Still, they're significantly more energy efficient than the two LAMD-powered drives. Seagate's 600 and Corsair's Neutron GTX use twice as much juice as the more economical SanDisk SSDs. If you're thinking about adding solid-state storage to a laptop, you're better off grabbing something more miserly at idle.

PCMark 7 Average Power Consumption

If we log power consumption through a workload, even a relatively heavy one, we see that average use is still pretty close to the idle numbers. Max power may spike fiercely, but the usage seen during a PCMark 7 run is pretty light.

The three drives appear to use similar amounts of power. There are a few transient spikes, particularly in the case of the 256 GB drive. But overall, each SSD averages well under 1 W through a PCMark 7 run.

Maximum Observed Power Consumption

There isn't much to say about maximum observed power consumption. It doesn't warrant much explanation, aside from the fact that few client workloads trigger these levels of use. It's a much more important metric in enterprise applications, where maximum consumption is a critical variable in total cost of ownership.

The smaller Ultra Plus drives demonstrate fairly conservative maximum power numbers. SanDisk's 256 GB Ultra Plus spikes as high as 4.3 W, though that's going to happen very seldom in a desktop or notebook deployment. We measured a similar spike over the course of a second in our PCMark 7 log, but again, that only happens once. Maximum power use just isn't a problem for mainstream SSDs.

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  • -2 Hide
    Madn3ss795 , July 1, 2013 9:31 PM
    Samsung 840's biggest competitor!
  • -1 Hide
    kevith , July 2, 2013 1:11 AM
    I have had the former SanDisk Extreme 128 GB for a year now, and it´s definitely fast enough. But what´s more impressive is, that after a year, the write amplification still hovers between 0,800 and 0,805. I´m using it in my laptop for quite "normal" use, FB, YouTube, mail, wordprocessing etc.on Windows 8 64-bit. So far it has served me very well, my next SSD is going to be another SanDisk
  • 0 Hide
    Soda-88 , July 2, 2013 3:47 AM
    I recommended this SSD (256GB) to my friend just a week ago since it was nearly as cheap as top of the line 128GB SSDs, glad to read positive review.
  • 0 Hide
    alidan , July 2, 2013 4:26 AM
    im honestly looking into ssd drives for games and mass small file storage.
    these are cheap, and they are large, would definitely help with load times/game performance, and browsing images stored enmass.
  • 0 Hide
    Brian Fulmer , July 2, 2013 8:08 AM
    I ordered 5 Extreme 128GB drives in March (model SDSSDHP-128G). I've been using OCZ, Kingston, Samsung and Crucial drives in every desktop and notebook I've deployed since August 2013. Out of ~75 drives, I've had 1 bad Vertex 4 and 6 defective by design Crucial V4's. Of the 5 SanDisks, 2 failed before deployment. Support was laughably incompetent in demanding the drives be updated with the latest firmware. Their character mode updater couldn't see the drives, because they DIED. SanDisk is no longer on my buy list.

    Incidentally, of the 8 SSD model SSD P5 128GB, I've had one die. The context should be of 35 Vertex 4's, I've had one die. I've had zero failures with 15 840's despite their supposedly fragile design.
  • 5 Hide
    ssdpro , July 2, 2013 2:57 PM
    Brian Fulmer's comments are very reasonable (except the "deployed since Aug 2013" part lol). Way too many people experience a failure then scream all drives from that mfg are junk. I have owned 2 840 Pro drives and had one fault out. Does that mean Samsung drives have a 50 percent failure rate? For me, yes, but overall no and I am definitely not that naive. The 840 Pro can and do fail like anything electrical can. I have owned probably a dozen OCZ drives and had one Vertex 2 failure - does that mean OCZ/SandForce firmware stinks and they aren't reliable? No, it just means a drive died and who knows why. I have owned a couple SanDisk products and none failed. Does that mean SanDisk is the best? No... it just means I didn't have one die but I also only sampled 2.
  • 1 Hide
    Combat Wombat , July 2, 2013 4:00 PM
    These and the OCZ drives from newegg are looking mighty close in price!
    BF4 Rebuild is about to take place :D 
  • 1 Hide
    fokka , July 2, 2013 8:28 PM
    @ssdpro: spot on. sure, if i buy from vendor a and his product fails, i will probably not buy from him again. if it fails more than once, there is no chance i'll buy his stuff again and i also will warn others about it. but understandable as this is, in the end even that doesn't mean much about the reliability of the manufacturer.

    that's also why i'm a bit sceptical about product ratings on amazon and the likes, since people are more inclined to complain about a bad experience, than share their view on a product that simply does what it should do: work.

    what we would need more often are statistics from bigger companies, or even repair services, so we don't have to base our purchases on samples of a few dozen to a few hundreds, but on thousands upon thousands of cases.
  • 0 Hide
    flong777 , July 3, 2013 1:02 AM
    The 840 Pro still appears to be the fastest overall SSD on the planet - but the difference between the top 5 is pretty much negligible. Among the top five, reliability and cost become the determining factors.
  • 0 Hide
    anything4this , July 4, 2013 10:30 AM
    I don't understand the ~500MBs read limit on the drives. Is it an interface bottleneck?
  • 0 Hide
    fokka , July 4, 2013 5:49 PM
    Quote:
    I don't understand the ~500MBs read limit on the drives. Is it an interface bottleneck?


    yes, it seems ssds connected with sata3, which delivers a theoretical maximum of 6Gbit/s, can't reach much more than 500MB/s. the only alternative is to directly use pcie as an interface like a bunch of enthusiast drives for desktops, and also the new macbook airs, which reach max throughput speeds of ~700MB/s iirc.
  • 0 Hide
    cloef , September 8, 2013 7:26 AM
    For anyone interested in the endurance of the SanDisk Ultra Plus there is a test launched at ssdendurancetest.com