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  1. #1
    New ROGer Array
    Join Date
    Dec 2014

    Question Maximus VII hero and M.2 SSD usage = only one PCIE slot active???


    This is an inquiry before buying.

    Reading the Maximus VII manual on page 1-26 there is a PCIE operating mode table.

    I am not sure I understand correctly but it seems to say that if I want to use a M.2 SSD on the mobo then I will have only the bottom PCIE slot that will work (and only at X2 speed) and all other PCIE slots on the cards will be unactive?

    Is that correct?

    Thanks in advance for your answers.

  2. #2
    ROG Guru: White Belt Array Sparax PC Specs
    Sparax PC Specs
    MotherboardAsus Maximus Hero VII
    ProcessorIntel Core i7 4790K
    Memory (part number)16GB Corsair Vengeance Pro 2400 MHz (CMY16GX3M2A2400C11R)
    Graphics Card #1Nvidia GTX 560Ti
    MonitorSamsung S24C450
    Storage #1120GB Corsair Force 3 SSD
    Storage #22TB Western Digital Caviar Black
    CPU CoolerCorsair H100i
    CaseSilverstone TJ09
    Power SupplyCooler Master 850W
    Keyboard Qpad MK-80
    Mouse Razer Deathadder 2013
    OS Windows 7
    Sparax's Avatar
    Join Date
    Jun 2014

    Yes that's correct with the M.2 Mode Enabled PCIEX4_3 will run at x2 and PCIEX1_1, PCIEX1_2 & PCIEX1_3 will be disabled.
    The PCIE_X16/X8_1 & PCIE_X8_2 will be unaffected

  3. #3
    New ROGer Array
    Join Date
    Dec 2014

    Thanks for your answer.

    Ok so to rephrase all the "longs" pcie slots will work but all the "shorts" Pcie slots will be disabled if I use a M.2 SSD ?

    Follow up question : 3 PCIE X1 extension ports disabled seems to be a high price to pay for using a M.2 SSD. Appart from the fact that you are using one less sata and sata power connectors compared to a "regular" SSD, what is the advantage of using an M.2 SSD then?

    Sorry if that follow up question is a bit outside the scope of this forum.


  4. #4
    ROG Guru: Green Belt Array Tokens210 PC Specs
    Tokens210 PC Specs
    MotherboardMaximus VI Formula
    Memory (part number)F3-2400C10D-16GTX Gskill TridentX (8gbx2)
    Graphics Card #1EVGA GTX 550TI 1gb
    Sound CardSupreme FX on board
    Storage #12x Samsung Evo 120gb
    Storage #2WD 1TB
    CPU CoolerSwiftech H320
    CaseCoolermaster HAF 932 Advanced
    Power SupplyCorsair HX850 80+ Platinum
    OS Windows 7 64-bit

    Join Date
    Feb 2014

    As far as I've known and seen there is no advantage except one less sata port, but that's not really an advantage since current boards have been upping the sata ports available

    JJ from Asus even says it in one of his videos, that m.2 and even the Asus Raidr are pointless during current times cause you'll get identical or even better speeds just using an ssd or 2 ssds in raid

    He did go on to say soon enough tho they be able to make them faster and better in which case they would gain something but some of the recent stuff is mostly just for ppl who want bragging rights lol
    CoolerMaster HAF 932 Advanced/ Maximus VI Formula/ I7-4770K/Swiftech H320/ Corsair HX850/ G.Skill Trident X (2x8) 16gb 2400MHz/ 2x 840 EVO 120gb(Raid 0)/ WD 1TB HDD (Backup/Storage)/ EVGA GTX 1gb 560 TI/ Asus 12x bluray combo

  5. #5
    New ROGer Array
    Join Date
    Dec 2014

    Well, I was hoping that, at least, the transfert speeds of a M.2 SSD would be superior to a regular sata SSD.

    With this information it seems that using a M.2 in a desktop doesn't make much sense then.

    Or maybe using one on a PCIE adapter if you can boot from it?


  6. #6
    ROG Enthusiast Array Backfire1 PC Specs
    Backfire1 PC Specs
    Laptop (Model)Samsung 700Z
    MotherboardHERO Z97
    Memory (part number)G.SKILL Trident X Series 16GB 2133mhz
    Graphics Card #1Gigabyte 970
    Monitor23 inch Samsung & 2 19 inch
    Storage #1Crucial MX100 512 GB
    Storage #23 7200 RPM HD WD
    CPU CoolerH-100
    CaseCorsair Graphite 600t
    Power SupplyCORSAIR HX750
    Keyboard Logitech K120
    Mouse Logitech M570
    Headset Plantronics 788
    OS 7 64 bit

    Join Date
    Nov 2014

    If you are buying a motherboard to utilize M.2 the Hero is not the board for you. Do a little more research and you will see that ASROCK Z97 Extreme6 is a more capable board. There are several sizes and transfer file types( PCIe x2 & Sata express) of M.2 devices. Hero limits you to a 1 file type and only a couple of sizes. The problem with M.2 is it is new to the desktop and their is not an industry standard yet. Dollar for dollar today I think the SSD is the way to go but give it some time and the M.2 will probably be the way of the future. Good luck

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