Considerations when buying new SSD

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  1. Posts : 54
    Win 10 Home x64 Ver 1909 Build 18363.900
       #1

    Considerations when buying new SSD


    What considerations do I need to know when shopping around for a new SSD?

    I received a desktop from my wife this past Christmas that has SSD storage, my first SSD device ever.

    Decided recently to start getting a little smart about SSD's as I realized if the SSD died, or I need larger storage, or it got sucked into an alternate universe, I'd need to know the important parameters/points to know when buying a new SSD.

    So, what I have in the comp is:
    256GB (storage size)
    M.2 (form factor)
    PCIe/NVMe (interface)
    2280 (physical size)

    Are the above the only considerations I need when shopping between brands, or are there more?

    For what it's worth, the comp is working fine, still has 6 months under warranty. Inquiry for my own info.
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  2. Posts : 446
    Windows 10
       #2

    Also consider the type of NAND cells - must be TLC. Triple Layer Cell, 3 bits stored per cell.
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  3. Posts : 2,068
    Windows 10 Pro
       #3

    In the case of your SSD, you have an M2 based SSD which physically connects directly to your motherboard. (like a stick of RAM). Depending upon the motherboard in your system, you may have only 1 M2 connector, or you may have multiple. You would have to look at your motherboard documentation to see if multiple M2 based SSD's could be used.

    With respect to the 2280 (physical size), typically your motherboard will allow smaller and larger SSD's on the motherboard. You would again have to look at the motherboard documentation to see which sizes will fit on the board.

    The M2 PCIExpress based SSD's are the fastest SSD's on the market. Specifically the PCI Express Gen4, Gen3 is super fast too....but Gen4 is the fastest.. At the moment, the Gen4 PCI Express option is ONLY available if you have an AMD Ryzen CPU on an x570 motherboard chipset. So, if you have Intel, PCI Express Gen3 is the top option.

    Now, in addition to M2 based SSD's, you can also use a standard 2.5" SATA based SSD drive. Performance on these will still crush standard hard drives. You can run as many of these as you have SATA ports on your motherboard.

    Hope these things help.
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  4. Posts : 25,076
    10 Home x64 (21H2) (10 Pro on 2nd pc)
       #4

    Anibor said:
    Also consider the type of NAND cells - must be TLC. Triple Layer Cell, 3 bits stored per cell.

    No, it's not true that it must be Triple Layer Cells. MLC Two Level Cells are also available, that gives greater endurance, but at a higher price. Typically most are TLC, but Four Layer Cells also exist (with a corespondingly lower price and endurance).


    Take the Samsung range as an example.

    The 970 EVO is 3 bit MLC
    Considerations when buying new SSD-image.png
    MZ-V7E2T0 | MZ-V7E2T0BW | Samsung UK

    The more expensive 970 PRO is 2 bit MLC
    Considerations when buying new SSD-image.png
    MZ-V7P512 | MZ-V7P512BW | Samsung UK

    While the budget QVO range (only available as SATA) uses 4 bits per cell
    Considerations when buying new SSD-image.png
    Samsung Solid State Drive 860 QVO SSD
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  5. Posts : 4,457
    Win 11 Pro 22000.708
       #5

    NVME SSDs are also available with PCI-E 4.0. (Most are PCI-E 3.0.)

    That offers twice the nominal bandwidth of PCI-E 3.0. (The gain isn't 2X in use.) It requires CPU and chipset support. AMD was first to offer that.
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  6. Posts : 54
    Win 10 Home x64 Ver 1909 Build 18363.900
    Thread Starter
       #6

    Thank you all for this information. Like I mentioned, SSD's are 6-months-new to me, so am still on a learning curve and this extra info beyond what I've crammed in so far helps focus me.

    The differing NAND cell types was a new subject for me. After Anibor mentioned it (post 2), I spent a few hours last night looking into that subject. Many different types exist with more in development. Could be a deep rabbit hole LOL. But I'm more aware of the subject which helps if I ever have specific questions in this area. As far as durability and life length of the different types, I figure that's why we make backups. TLC is fine, especially because it's the most commonly available. Thanks for the homework assignment, Anibor LOL.

    The PCIe is generation 3 on this motherboard. However, HP was cool enough to have the cabling installed, tied off, and available for the 2.5in drive. Sticking with M.2 NVMe form and function.

    For what it's worth, here's the part number info from the data label on the SSD. I opened the case up a few days ago for my 6 month cleaning cycle and gather some info off various components.:

    SK hynix: HFM256GDJTNG-8301A BA (From SSD label, also from Device Manager > Disk Drives)
    HP: L15194-002 (From SSD label...seems to be HP in-house part numbering system)

    When I went to check availability in case of failure or capacity upgrade, both numbers came up as rather obscure with most being pulled from computers and available on E-Bay. Detailed specs were non-existent. So I needed to quickly learn what to look for in a more commonly available replacement. Which prompted this post.

    My impression so far is replacements are common and readily available, which gives me a warm and fuzzy feeling. I didn't have that earlier...LOL.

    Thanks, again, for everyone's time. Any extra commenting is welcome.
    Last edited by Figfig; 11 Jun 2020 at 16:31. Reason: Correcting my ignorance LOL
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  7. Posts : 4,457
    Win 11 Pro 22000.708
       #7

    Detailed specs?

    SSD < PRODUCTS < SK hynix

    In particular: https://www.skhynix.com/datasheet/en..._S3)_popup.jsp

    Not very detailed. The read rate seems low, if it's a PCI-E 3.0 X4 device. I also don't see a mention of NVME.
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  8. Posts : 504
    Windows 10
       #8

    The latest modern Laptops have like 32gb Hard Drive

    There are two types of users.

    Own a Disc for life or stream for life with f*** all
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  9. Posts : 25,076
    10 Home x64 (21H2) (10 Pro on 2nd pc)
       #9

    Pluginz said:
    The latest modern Laptops have like 32gb Hard Drive...
    Low end laptops often have a 32GB eMMC drive soldered onto the motherboard.

    But that's OT for this thread, it's discussing high end machines with an M.2 slot and SSDs with capacities measured in TB, not GB.
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  10. Posts : 504
    Windows 10
       #10

    Sorry Bree understood
    It was just a consideration in the OP question. I wasnt trying to be negative or get anything confused.
    I just hate modern 'you dont own any software' anymore type of
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