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Samsung SSD 850 PRO Solid State Drive Review

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AIDA64 Disk Benchmark

Many enthusiasts are familiar with the Finalwire AIDA64 benchmark suite (formerly Lavalys EVEREST), but very few are aware of the Disk Benchmark tool available inside the program. The AIDA64 Disk Benchmark performs linear read and write bandwidth tests on each drive, and can be configured to use file chunk sizes up to 1MB (which speeds up testing and minimizes jitter in the waveform). Because of the full sector-by-sector nature of linear testing, Benchmark Reviews endorses this method for testing SSD products, as detailed in our Solid State Drive Benchmark Performance Testing article. However, Hard Disk Drive products suffer a lower average bandwidth as the capacity draws linear read/write speed down into the inner-portion of the disk platter. AIDA64 Disk Benchmark does not require a partition to be present for testing, so all of our benchmarks are completed prior to drive formatting.

Linear disk benchmarks are superior bandwidth speed tools in my opinion, because they scan from the first physical sector to the last. A side affect of many linear write-performance test tools is that the data is erased as it writes to every sector on the drive. Normally this isn’t an issue, but it has been shown that partition table alignment will occasionally play a role in overall SSD performance (HDDs don’t suffer this problem).

AIDA64-Read-Benchmark-Samsung-SSD-850-PRO

The high-performance storage products tested with Lavalys AIDA64 Disk Benchmark are connected to the Intel P67-Express SATA 6Gb/s controller and use a 1MB block size option. Charted above, read performance on the 256GB Samsung SSD 850 PRO solid state drive measured average speeds of 507.7 MB/s. As seen from the consistent flat-line wave form, the average read speed was virtually identical to this drives maximum peak speeds of 507.9 MB/s across the full range of capacity. AIDA64 linear write-to tests were next…

AIDA64-Write-Benchmark-Samsung-SSD-850-PRO

The waveform chart above illustrates how well the Samsung SSD 850 PRO manages file transfers, indicating linear write performance speeds that appear uninterrupted. The 256GB Samsung SSD 850 PRO solid state drive recorded an average linear write-to speed of 479.3 MB/s, with maximum performance reaching 484.0 MB/s.

AIDA64 combined benchmark speed performance results for the Samsung SSD 850 PRO surpassed every other SATA-based SSD we’ve tested, firmly outperforming the Intel SSD 520 series.

The chart below shows the average linear read and write bandwidth speeds for a cross-section of storage devices tested with EVEREST:

AIDA64-Disk-Benchmark_Results

Linear tests are an important tool for comparing bandwidth speed between storage products – although HDD products suffer performance degradation over the span of their areal storage capacity. Linear bandwidth certainly benefits the Solid State Drive, since there’s very little fluctuation in transfer speed. This is because Hard Disk Drive products decline in performance as the spindle reaches the inner-most sectors on the magnetic platter, away from the fast outer edge.

In the next section we use PCMark Vantage to test real-world performance…


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14 comments

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  1. Matt M.

    If you can find your way past the numerous prompts to get to SSD support you “might” be able find the right person to answer your question.
    Don’t bother buying an SSD if you are using a NVIDIA controller. Think about getting a separate controller such as a SIIG as a partial work around the compatibility and speed issue.

    1. Olin Coles

      NVIDIA chipsets are decent, but they just aren’t as competitive as Intel or AMD boards. All of our testing is done on Intel chipsets, and I’ve had good experience with AMD motherboards, but I wouldn’t suggest NVIDIA-based motherboards for much anymore. Sorry!

  2. John P. Myers

    Samsung has updated their MSRP listings:

    128GB – $129.99 USD ($1.02/GB)
    256GB – $199.99 USD ($0.78/GB)
    512GB – $399.99 USD ($0.78/GB)
    1TB – $699.99 USD ($0.68/GB)

    1. Olin Coles

      The prices we published were those sent to us last night. If they’ve changed in the few hours since then, it’s only on paper. The only prices that matter are those at places like Amazon and Newegg.

    2. Olin Coles

      It turns out the prices we published were exactly correct, and match those found at Newegg and Amazon: http://amzn.to/1lCj1je

  3. joey

    Enable RAPID and nearly double those performance scores.

    1. Olin Coles

      RAPID would add system-supplemented performance to the benchmark, and would not be appropriate for a SSD review that compares apples to apples.

      1. Hank Tolman

        RAPID Mode actually doesn’t use the SATA channel to improve performance. It uses up to 1GB of RAM to cache data. RAPID mode analyzes all storage related activity by inserting itself as a filter driver in the Windows storage stack. It provides RAM caching based on a number of factors, like access frequency, file types, system status, and RAM availability. It also caches the ‘hot data’ across sessions and reboots.

        I consistently get 900+ MB/s using RAPID mode, but it doesn’t represent real SATA performance since it really just intelligent RAM caching.

        Read more at http://benchmarkreviews.com/15347/samsung-840-pro-solid-state-drive-review/

  4. Chris

    It’s fast, but the question is, is it worth paying almost 2 times as much in terms of capacity:cost as much as the MX100?

    – The MX 100 offers power loss protection
    – There is limited end to end data protection too in the MX100

    Against this, there’s the SSD 850 Pro, which is very fast, and has 40 nm NAND (which lasts longer).

  5. Caring1

    I’m still trying to figure out the difference from the 840 Pro.
    Didn’t that also come with Magician software and Rapid Mode?
    The Read/ Write figures look the same, so does the IOPS.

    1. Olin Coles

      Read the review. This is explained in the first two paragraphs, and also at the end of page two. Hint: 32-layer 3D V-NAND Flash, 200% write endurance in Total Bytes Written (TBW), and active write power has been reduced by up to 40% due to Samsung 3D V-NAND technology.

      1. Caring1

        Yep, I read the review before my previous post thank you.
        Strangely the article stated this > “Benchmark Reviews tests the 256GB Samsung SSD 850 PRO against the fastest solid state drives available.”
        Yet omitted to include the 840 Pro. Funny that considering what I already pointed out, the figures look the same!

  6. Stormprobe

    This review says it has a 5-year warranty, but it actually has a 10-year.

    1. Olin Coles

      That detail was published exactly how Samsung supplied it, so if they’ve increased the warranty it was done so after the product launch. Myself and others would like you to reference your source for this information.

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