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WD Black SN750 vs WD Black SN770: Which NVMe SSD to buy?

    WD Black SN750 and WD Black SN770 both come in the budget NVMe category. The SN750 is a Gen 3 NVMe whereas the SN550 is a Gen 4 NVMe. So, if you are confused between the both, you should first check your requirements. If you have a laptop, a Gen 3 SSD will be enough. So, SN750 is a good pick. However, if you are looking for higher read/write speed, SN770 is the best pick for sure.

    The maximum read/write speed of SN770 is 5150/4850 MB/s whereas SN750 has 3400/3100 MB/s read/write speed. So, you can easily make your final decision right here. If you are good to go with around a 3GB/s speed limit and want to save some money, SN750 is the best option for both.

    There are numerous other things to discuss and compare in this article. So, without any delays, let’s get started.

    SpecificationWD Black SN770WD Black SN750
    Storage Variants250GB, 500GB, 1TB, 2TB250GB, 500GB, 1TB, 2TB, 4TB
    Theoretical Read Speed (Max.)5,150 MB/s3,400 MB/s
    Theoretical Write Speed (Max.)4,850 MB/s3,100 MB/s
    Random Read (4K, QD32) (Max.)Up to 7,40,000 IOPSUp to 5,50,000 IOPS
    Random Write (4K, QD32) (Max.)Up to 8,00,000 IOPSUp to 5,20,000 IOPS
    Form Factor/InterfaceM.2 (2280)/x4 PCIe 4.0/NVMeM.2/x4 PCIe 3.0/NVMe
    MTBF (Reliability)1.75 Million Hours1.75 Million Hours
    Warranty5 Years5 Years
    EncryptionNo hardware encryptionNo hardware encryption
    Heatsink OptionNot AvailableAvailable
    AvailabilityCheck PriceCheck Price

    SN770 definitely higher read/write speed. However, all other things are pretty similar in both.  One of the major disadvantages of both is that neither supports encryption.

    The test bench used for these benchmarks has Intel i5 12700K CPU along with 4200MHz DDR5 RAM. The SSDs are 0% filled and set as OS drives. The motherboard is MSI Pro Z690-A.

    Results Analysis: Clearly, WD Black SN770 is the winner. It is an obvious result to expect from this comparison. The differences are huge and pretty significant. So, if you are looking for the best performance, SN770 is the best pick for you.

    ParameterWD Black SN770WD Black SN750 
    TBW250GB: 200
    : 300 TBW
    1TB: 600 TBW
    2TB: 1,200 TBW
    250GB: 200 TBW
    500GB: 300  TBW
    1TB: 600 TBW
    2TB: 1,200 TBW
    4TB: 2,400 TBW
    Warranty5-Years Limited Warranty5-Years Limited Warranty
    MTBF (Mean Time Between Failure)1.75 Million Hours1.75 Million Hours
    Technical SpecificationWD Black SN770WD Black SN750
    NAND Flash TypeSanDisk’s TLC NAND Sandisk’s TLC
    NAND Flash Layers11264
    ControllerWD ProprietaryWD Proprietary
    Controller Configurations4 ChannelTri-core, 8-ch, 8-CE/ch
    DRAMNot AvailableAvailable
    Heatsink OptionNot AvailableAvailable
    EncryptionNot AvailableNot Available
    WebsiteWD Black SN770WD Black SN750

    WD Black SN770 is the perfect pick for those who have a little higher budget. It has better sequential and random read/write performance. Benchmark results are also in favor of SN770. Keep a thing in mind that SN770 is a Gen 4 NVMe which is suitable for high-end computers.

    However, SN750 is for those who have a low budget and looking for a perfect Gen 3 NVMe. It can offer you acceptable performance by spending not too much.

    Let me know what you think about this article in the comments.

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