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How We Tested JMicron's Reference SSDs

JMicron Returns: The JMF667H Controller On Four Reference SSDs
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Our consumer storage test bench is based on Intel's Z77 Platform Controller Hub paired with an Intel Core i5-2400 CPU. Intel's 6- and 7-series chipsets are virtually identical from a storage perspective. We're standardizing on older RST 10.6.1002 drivers for the foreseeable future.

Updates to the RST driver package occasionally result in subtle performance changes. They can also lead to some truly profound variance in scores and results as well, depending on the revision. Some versions flush writes more or less frequently. Others work better in RAID situations. Builds 11.2 and newer support TRIM in RAID as well. Regardless, results obtained with one revision may or may not be comparable to results obtained with another, so sticking with one version across all testing is mandatory.

Test System Specs

Power Testing Laptop
Lenovo T440s, 8 GB DDR3, Windows To Go 8.1, ULINK DevSlp Test Platform
ProcessorIntel Core i5-2400 (Sandy Bridge), 32 nm, 3.1 GHz, LGA 1155, 6 MB Shared L3, Turbo Boost Enabled
MotherboardGigabyte G1.Sniper M3
MemoryG.Skill Ripjaws 8 GB (2 x 4 GB) DDR3-1866 @ DDR3-1333, 1.5 V
System Drive Intel S3500 480 GB SATA 6 Gb/s, Firmware: 0306
Drive(s) Under Test128 GB JMicron JMF667H Test SSD L85C Flash, SATA 6 Gb/s, Firmware: 417a
Drive(s) Under Test256 GB JMicron JMF667H Test SSD L85A Flash, SATA 6 Gb/s, Firmware: 417a
Drive(s) Under Test128 GB JMicron JMF667H Test SSD A19 Flash, SATA 6 Gb/s, Firmware: 423a
Drive(s) Under Test256 GB JMicron JMF667H Test SSD A19 Flash, SATA 6 Gb/s, Firmware: 423a
Comparison DrivesTranscend SSD340 256 GB SATA 6 Gb/s, Firmware: SVN235
Comparison DrivesPlextor M6e 256 GB M.2 PCIe x2, Firmware: 1.00

Plextor M6S 256 GB SATA 6 Gb/s, Firmware: 1.00

Plextor M6M 256 GB mSATA 6 Gb/s, Firmware: 1.00

Adata SP920 1024 GB SATA 6 Gb/s, Firmware: MU01

Adata SP920 512GB SATA 6 Gb/s, Firmware: MU01

Adata SP920 256 GB SATA 6 Gb/s, Firmware: MU01

Adata SP920 128 GB SATA 6 Gb/s, Firmware: MU01

Crucial M550 1024 GB SATA 6 Gb/s, Firmware: MU01

Crucial M550 512 GB SATA 6 Gb/s, Firmware: MU01

Intel SSD 730 480 GB SATA 6 Gb/s, Firmware: L2010400

Samsung 840 EVO mSATA 120 GB, Firmware: EXT41B6Q

Samsung 840 EVO mSATA 250 GB, Firmware: EXT41B6Q

Samsung 840 EVO mSATA 500 GB, Firmware: EXT41B6Q

Samsung 840 EVO mSATA 1000 GB, Firmware: EXT41B6Q

SanDisk X210 256 GB, Firmware X210400

SanDisk X210 512 GB, Firmware X210400

Intel SSD 530 180 GB SATA 6Gb/s, Firmware: DC12

Intel SSD 520 180 GB SATA 6Gb/s, Firmware: 400i

Intel SSD 525 180 GB mSATA, Firmware: LLKi

SanDisk A110 256 GB M.2 PCIe x2, Firmware: A200100

Silicon Motion SM226EN 128 GB SATA 6Gb/s, Firmware: M0709A

Crucial M500 120 GB SATA 6Gb/s, Firmware: MU02

Crucial M500 240 GB SATA 6Gb/s, Firmware: MU02

Crucial M500 480 GB SATA 6Gb/s, Firmware: MU02

Crucial M500 960 GB SATA 6Gb/s, Firmware: MU02

Samsung 840 EVO 120 GB SATA 6Gb/s, Firmware: EXT0AB0Q

Samsung 840 EVO 240 GB SATA 6Gb/s, Firmware: EXT0AB0Q

Samsung 840 EVO 480 GB SATA 6Gb/s, Firmware: EXT0AB0Q

Samsung 840 EVO 1 TB SATA 6Gb/s, Firmware: EXT0AB0Q

SanDisk Ultra Plus 64 GB SATA 6Gb/s, Firmware: X211200

SanDisk Ultra Plus 128 GB SATA 6Gb/s, Firmware X211200

SanDisk Ultra Plus 256 GB SATA 6Gb/s, Firmware X211200

Samsung 840 Pro 256 GB SATA 6Gb/s, Firmware DXM04B0Q

Samsung 840 Pro 128 GB SATA 6Gb/s, Firmware DXM04B0Q

SanDisk Extreme II 120 GB, Firmware: R1311

SanDisk Extreme II 240 GB, Firmware: R1311

SanDisk Extreme II 480 GB, Firmware: R1311

Seagate 600 SSD 240 GB SATA 6Gb/s, Firmware: B660

Intel SSD 525 30 GB mSATA 6Gb/s, Firmware LLKi

Intel SSD 525 60 GB mSATA 6Gb/s, Firmware LLKi

Intel SSD 525 120 GB mSATA 6Gb/s, Firmware LLKi

Intel SSD 525 180 GB mSATA 6Gb/s, Firmware LLKi

Intel SSD 525 240 GB mSATA 6Gb/s, Firmware LLKi

Intel SSD 335 240 GB SATA 6Gb/s, Firmware: 335s

Intel SSD 510 250 GB SATA 6Gb/s, Firmware: PWG2

OCZ Vertex 3.20 240 GB SATA 6Gb/s, Firmware: 2.25

OCZ Vector 256 GB SATA 6Gb/s, Firmware: 2.0

Samsung 830 512 GB SATA 6Gb/s, Firmware: CXMO3B1Q

Crucial m4 256 GB SATA 6Gb/s Firmware: 000F

Plextor M5 Pro 256 GB SATA 6Gb/s Firmware: 1.02

 Corsair Neutron GTX 240 GB SATA 6Gb/s, Firmware: M206
Graphics
MSI Cyclone GTX 460 1 GB
Chassis
Lian Li Pitstop T60
RAID
LSI 9266-8i PCIe x8, FastPath and CacheCade AFK
Power Supply
Seasonic X-650, 650 W 80 PLUS Gold

System Software and Drivers

Operating System
Windows 7 x64 Ultimate
APIDirectX 11
Graphics
Nvidia 314.07
RST
10.61002
IMEI
7.1.21.1124
Generic AHCI
MSAHCI.SYS

Benchmark Suite

ULINK DriveMaster 2012
DM2012 v980, JEDEC 218A-based TRIM Test, Protocol Test Suite
Test Specific Hardware
SAS/SATA Power Hub, DevSlp Platform
Tom's Hardware Storage Bench v1.0
Intel iPeak Storage Toolkit 5.2.1, Tom's Storage Bench 1.0 Trace Recording
Iometer 1.1.0# Workers = 1, 4 KB Random: LBA=16 GB, varying QDs, 128 KB Sequential, 16 GB LBA Precondition, Exponential QD Scaling
PCMark 8
PCMark 8 2.0.228, Storage Consistency Test
PCMark 7
Secondary Storage Suite
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  • 2 Hide
    blackmagnum , July 11, 2014 3:22 AM
    JMicron vs. Silicon Motion: Fight of the Underdogs - Coming next issue!
  • 1 Hide
    Snipergod87 , July 11, 2014 8:05 AM
    Page 6: "For every 1 GB the host asked to be written, Mushkin's drive is forced to write 1.05 GB."

    Mushkin drive?, To much copy paste.
  • 0 Hide
    koolkei , July 11, 2014 8:42 AM
    guys. please take a look at this
    http://www.tweaktown.com/reviews/6052/kingfast-c-drive-f8-series-240gb-ssd-review-cheapest-tested-240gb-drive-so-far/index.html

    that's an actual SSD using this controller, and the price is........ a little more than surprising...
  • 1 Hide
    pjmelect , July 11, 2014 10:02 AM
    I remember their USB to IDE SATA chip. It caused data corruption every 4 GB or so when transferring data via the IDE interface. I have always been wary of their products since then.
  • 1 Hide
    tripleX , July 12, 2014 3:21 PM
    "But we're not going to use theoretical corner cases (the sequential and random 4 KB benchmarks we just ran) to crown one configuration a winner and another a loser."

    A corner case is not sequential and random benchmarks. It is an engineering term that means, according to Wiki:

    A corner case (or pathological case) is a problem or situation that occurs only outside of normal operating parameters—specifically one that manifests itself when multiple environmental variables or conditions are simultaneously at extreme levels, even though each parameter is within the specified range for that parameter.
  • 1 Hide
    g00ey , July 13, 2014 11:42 AM
    JMicron has always made pretty shitty products so I won´'t buy any of these anytime soon...
  • 1 Hide
    2Be_or_Not2Be , July 14, 2014 1:54 PM
    I, too, find it hard to want to purchase a drive from a manufacturer with such a lackluster history.

    One part of this article that also doesn't make sense: "Why four channels and not eight? Efficiency is one key motivator. Fewer channels facilitate a smaller ASIC, which can, in turn, be more power-friendly." Compare the size of the PCB to one like the Samsung 850 Pro. They aren't saving much in real estate (they are actually bigger than the Samsung boards), so it makes it hard to believe they're saving much in power here.
  • 0 Hide
    biohazard918 , July 14, 2014 2:39 PM
    Jmicron returns: this time its personal!
  • 0 Hide
    gsxrme , July 15, 2014 11:11 AM
    No Mushkin Chronos!? Wa we don't want to make Samsungs butt hurt? Com'on Toms!