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M.2 sata ssd vs M.2 PCIe ssd

while i was exploring the different ssd's available in market i found some support sata interface while the more expensive ones, PCIe 3.0 interface. will the M.2 PCIe ones fetch me any noticeable difference compared to the M.2 SATA ssd's?
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  1. To begin with it's SATA vs m2 SSD. M.2 SSD is connected to the motherboard directly via a PCI-E slot and thus can be faster than the sata, which has a limit of 6gb (current generation). Thing is most SSDs right now are not fast enough to use all the speed provided by the SATA. So for most SSDs SATA is enough, however it is good when you buy a new motherboard to look into M2 slot so that you can upgrade to M2 SSD in the future when faster SSDs come out.
  2. New M2 capable motherboards can operate in either SATA or PCI-E mode. Obviously PCI-E mode (with NVME) is going to give you the fastest performance. The downside to running PCI-E is on a system with limited PCI-E lanes. Especially systems that are using multiple GPUs.

    The newer M2 drives have read speeds up to 2500MB/s read speeds so they are most definitely faster than SATA SSD's, and write speeds up to 1500MB/s. Actually referring to Samsungs 950 Pro 512GB drives here.
  3. They both use the same M.2 Connector. Just as Gingerbread said NVMe will use PCIe lanes when plugged into the slot where as a SATA M.2 SSD will then use one of the SATA ports limiting you to SATA speeds.

    Now will it make a difference. Depends on what you are doing. For normal everyday things you won't see a much of a difference. To find out why reads my last post here which will explain why.

    http://www.tomshardware.com/answers/id-3008183/950-pro-improve-gaming-850-evo-ssd-gaming-drive.html
  4. Gingerbread said:
    To begin with it's SATA vs m2 SSD. M.2 SSD is connected to the motherboard directly via a PCI-E slot and thus can be faster than the sata, which has a limit of 6gb (current generation). Thing is most SSDs right now are not fast enough to use all the speed provided by the SATA. So for most SSDs SATA is enough, however it is good when you buy a new motherboard to look into M2 slot so that you can upgrade to M2 SSD in the future when faster SSDs come out.


    have a look at this ssd by samsung: "Samsung SSD 850 EVO 250 GB m.2 SATA Internal SSD MZ-N5E250B "
    the name clearly says M.2 SATA. but you say it has M.2 ssd uses only the PCIe and has got nothing to do with SATA. its really confusing. please explain
  5. Best answer
    vikyy17 said:
    Gingerbread said:
    To begin with it's SATA vs m2 SSD. M.2 SSD is connected to the motherboard directly via a PCI-E slot and thus can be faster than the sata, which has a limit of 6gb (current generation). Thing is most SSDs right now are not fast enough to use all the speed provided by the SATA. So for most SSDs SATA is enough, however it is good when you buy a new motherboard to look into M2 slot so that you can upgrade to M2 SSD in the future when faster SSDs come out.


    have a look at this ssd by samsung: "Samsung SSD 850 EVO 250 GB m.2 SATA Internal SSD MZ-N5E250B "
    the name clearly says M.2 SATA. but you say it has M.2 ssd uses only the PCIe and has got nothing to do with SATA. its really confusing. please explain


    They both use the same M.2 but the slot is usually wired for BOTH PCIe Lanes AND SATA. If you plug in a SATA M.2 it uses up one of the SATA ports if you put in a NVMe M.2 It uses the PCIe lanes.
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