TRIM Performance

In practice, SandForce based drives running a mainstream client workload do very well and typically boast low average write amplification. However if subjected to a workload composed entirely of incompressible writes (e.g. tons of compressed images, videos and music) you can back the controller into a corner.

To simulate this I filled the drive with incompressible data, ran a 4KB (100% LBA space, QD32) random write test with incompressible data for an hour and a half, and then ran AS-SSD (another incompressible data test) to see how low performance could get:

Kingston HyperX 3K - Resiliency - AS SSD Sequential Write Speed - 6Gbps
  Clean After 1.5hr Torture After TRIM
Kingston HyperX 3K 240GB 312.4 MB/s 103.9 MB/s 245.8 MB/s

I usually run this test for only 20 minutes but after seeing an unusually resilient performance by the 240GB drives I decided to extend the test period to a full 90 minutes. Performance does drop pretty far at that point, down to 103MB/s. TRIMing the drive does restore some performance but not all. If you have a workload that uses a lot of incompressible data (e.g. JPGs, H.264 videos, software encrypted data, highly random datasets etc...) then SandForce just isn't for you.

Power Consumption

SandForce boasts fairly low power consumption, particularly at idle. Even with incompressible data the HyperX 3K's power draw is competitive:

Drive Power Consumption - Idle

Drive Power Consumption - Sequential Write

Drive Power Consumption - Random Write

 

AnandTech Storage Bench 2011 - Light Workload
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  • NetCommercial - Thursday, November 22, 2012 - link

    Long time reader just signed up to comment as it appears you actually read them and do take into consideration the comment itself.
    First off thank you for the benchmarks and simplifying the results the best you can. I enjoyed the article showing the Kingston X that is on sale at Newegg for BFriday and was considering it.
    After reading I will pass. I am a video editor. I think a good percentage of us are in some way using our computers for more then gaming. After all the rigs people are putting together are ridiculous for gaming. I play games online and get kicked all the time for being too 'fast'. That is with a dinosaur of a pre-made Dell bucket.
    With that being stated I would like to see an area where you guys do shoot outs with the same sized/priced equipment doing renders with decent sized files. For instance the review did on the King x was terrific however where was Plextor @ ? It is in the price range and does compete with the Sammy 830/ 840pro IMO... This article just started to brief on that scenario.
    Again Thank you for your help, advice and time you put into these articles. You are one of my resource hubs of trusted information.
    Best,
    NetCommercial
    Reply
  • ickibar1234 - Monday, December 02, 2013 - link

    The Desktop IOMeter 4K random read of only 40MB/s is kind of sad. I'm sure that is with a queue depth of 1 but still. Reply

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