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  1. #1
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    m.2 x4 vs sata real performance

    First post. I just purchased a G751JT (with a m.2 connector) and am looking to install an SSD. I am curious what kind of real performance can be seen using m.2 of sata. I am coming from a computer several generations old which I did outfit a SSD for huge improvement over a spinner.

    Will it boot significantly faster, app loads, etc. Or is it too bleeding edge to justify the extra expense. Data seems sparce beyond data r/w speeds.

  2. #2
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    M.2 x4 is much faster than SSD, it is top of the line.
    M.2 can read and write around 1000 MB/s
    SSD can read and write around 550 MB/s

    if you get samsung latest M.2 you can get up to 2000 MB/s

  3. #3
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    Test of SM951

    Hí,

    feel free to use any translator like google or so.

    http://www.computerbase.de/2015-05/s...sm951-im-test/

    cheers

    steve

  4. #4
    ROG Guru: Orange Belt Array Prostar Computer's Avatar
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    Remember that m.2 is just the form factor. The PCI-E variant is noticeably faster than SATA, but whether it is enough to justify the cost is subjective.
    We customize Asus, MSI, and Clevo laptops!

  5. #5
    ROG MASTER Array ROGTWAT PC Specs
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    Laptop (Model)G751JY
    MotherboardIntel® HM87
    ProcessorIntel Core i7-4720HQ
    Memory (part number)16GB (2x8GB)
    Graphics Card #1nvidia GeForce GTX 980M
    Monitor1920x1080p IPS @85Hz
    OS Windows 10
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    Quote Originally Posted by Prostar Computer View Post
    Remember that m.2 is just the form factor. The PCI-E variant is noticeably faster than SATA, but whether it is enough to justify the cost is subjective.
    Right, no one's gonna die if Windows takes 6 seconds to boot instead of 4 ;-) Although... nah... well... theoretically. Oh eff it, I'm never gonna go SATA again!
    ASUS G751JY | i7-4720HQ | GTX 980M | 16GB RAM | M.2 SSD + HDD | WIN 10

  6. #6
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
    MonitorASUS PG278Q
    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
    CaseObsidian 750D (original), 6xNH-A14
    Power SupplyZalman/FSP ZM1250 Platinum
    Headset Pilot P51 PTT *modded*
    OS Arch, Gentoo, Win7x64, Win10x64
    Network RouterActiontec T3200M VDSL2 Gateway
    Accessory #1 TP-Link AC1900 Archer T9E, 1xPCIe
    Accessory #2 ASUS/Infineon SLB9635 TPM (TT1.2/FW3.19)
    Accessory #3 ASUS OC Panel I (FW0501)
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    SATA SSDs in striped RAID can be awesomely fast, too. In theory up to "6X" faster, although in practice only up to maybe 2GB/s throughput with six fast SSDs.

    There are some PCIe SSD cards which can sustain 2GB/s, 4GB/s, or even more throughput. The G.Skill Phoenix Blade is a fine example, actually a "low end" enterprise product rebranded for gamers.

    SATA, M.2, and PCIe SSD are just form factors, they all use basically the same flash chips and controllers. Performance at the high end is limited by the bus, and PCIe is the fastest of these. Unlike SATA and M.2, PCIe cards are often multiple "discrete" SSDs embedded onto a single performance RAIN/RAID configuration, reported to the system as a "single" drive.

  7. #7
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    I hate how they merge multiple techs into the same form factor. M.2 has sata, x2, x4 and also nvme memory (not supported?) it makes devices not consumer friendly. In addition to the cost I just purchased a 850 evo 512GB and will run windows/apps from that. I may upgrade to an x4 in the future when costs come down a touch. Thanks for the info guys.

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