960 EVO M.2 only works PCI-E Gen2 x2


Today I bought a Samsung 960 EVO M.2 NVMe SSD (it has 3200MB/s read and 1500MB/s write speed). I put into my motherboard, whitch is a Gigabyte GA-Z97x Gaming 3. (my CPU is i7 4790k) It works, but there is a problem.

It only works in PCI-e Gen2 x2 mode, and it has 820MB/s read and 750MB/s write speed. The M.2 slot is in PCI mode, and there is just a MSi 970 in the PCI_E1. I also installed all drivers. (the samsung magician program too)

On the offical site there is: "Turbo M.2: delivering next generation M.2 Gen3 x4 performance with transfer speeds up to 32 Gb/s"

What can I do now? What is the problem?
Reply to Hansen3993
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    Can you confirm if this is the same official site of your motherboard you have mentioned:

    It states that the M.2 socket of the Gigabyte GA-Z97X Gaming 3 are:

    "M.2 for SSDs drives with up to 10 Gb/s data transfer"


    "GIGABYTE G1™ Gaming motherboards come equipped with an onboard M.2 slot, providing users PCI-Express connectivity for SSD devices. Delivering up to 10 Gb/s data transfer speeds, M.2 offers users considerably faster storage performance than current mSATA and even SATA Revision 3 (6Gb/s) storage devices."

    Based on the specs, your motherboard doesn't seem to provide PCIe3.0 x4 speeds on its M.2 socket, only 10 Gb/s (equal to 1.25GB/s), which is roughly PCIe2.0 x2 speeds.
    Reply to raisonjohn
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