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A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM vs Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD

These are not substitutes: the A-Tech kit is desktop RAM and the WD_BLACK SN770 is an M.2 NVMe SSD. Buy the A-Tech kit only if you need DDR4 DIMMs for a desktop build; buy the SN770 if you need fast storage for a laptop or desktop. The A-Tech kit is $141.57 and the SN770 is $145.98 new, so the price gap is small but the parts do different jobs.

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A-Tech
A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM

A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM

5· 2 ratings

Choose the A-Tech 16GB DDR4 kit if you are upgrading a desktop that takes 288-pin DDR4 DIMMs and want 16GB in two 8GB sticks at 3200MHz.

Pros
  • 16GB in two matched 8GB sticks at 3200MHz.
  • Non-ECC unbuffered, 1.2V, standard desktop spec.
Lowest-priced desktop RAM kit at $141.57.
  • Simple install in a free DIMM slot.
    • Cons
    • Only 2 ratings, so little buyer history.
    • Generic brand with weaker resale value.
    • Does nothing for storage speed or capacity.
    • Specs on the page conflict: DDR3/240-pin/1600MHz vs DDR4/288-pin/3200MHz.
    Western Digital
    Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD

    Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD

    Choose the WD_BLACK SN770 if you need a Gen4 NVMe M.2 drive for a laptop or desktop and want roughly 5,150 MB/s reads.

    Pros
    • Gen4 NVMe with 5,150 MB/s read and 4,900 MB/s write.
    • WD_BLACK name resells quickly by model number WDS100T3X0E.
    • Single-sided M.2 2280 fits most laptops and desktops.
    • nCache 4.0 and gaming-focused tuning.
    Cons
    • Capacity is unclear: 2TB in the name, 1TB in the specs.
    • No hardware AES encryption listed.
    • Needs an M.2 slot with PCIe Gen4 for full speed.
    • Not crush-proof and not removable once installed.

    What separates them

    A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAMWestern Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
    Part typeDesktop DDR4 memory kit (2x8GB DIMMs)M.2 NVMe internal SSD
    What it upgradesSystem memory capacity and speedStorage speed and capacity
    Interface288-pin DIMM slot on the motherboardPCIe Gen4 x4 via M.2
    Rated speed3200MHz (PC4-25600)5,150 MB/s read, 4,900 MB/s write
    Capacity16GB total (2x8GB)Listed as 2TB in the name, 1TB in the specs
    Form factorFull-size desktop DIMMM.2 2280 (also listed as 2230), single-sided
    Laptop fitNo, desktop DIMMs onlyYes, M.2 2280 fits most modern laptops
    Brand recognitionGeneric A-Tech, lower resale appealWD_BLACK is widely recognized by gamers

    Price history

    • A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM: lowest $22.14 on Oct 28.
    • Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD: lowest $145.98 on Oct 28.

    Prices at every store

    A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM

    • A-Tech MemoryCheck price at A-Tech Memory
    Prices and history →

    Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD

    No priced offers right now.

    Prices and history →

    Specs compared

    SpecA-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAMWestern Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
    TypeDDR3NVMe SSD
    Form Factor240-pinM.2 2230, M.2 2280
    Number Of SticksTwo—
    Capacity16 GB—
    Speed1,600 MHz—
    HD capacity—1 TB
    HD type—Solid State
    Brand—Western Digital
    Internal/external—Internal
    Interface type—PCI Express
    Hard drive form factor—1 Terabytes
    Read speed—5,150 MB/s
    Show all 32 specsShow fewer specs
    SpecA-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAMWestern Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
    Write speed—4900
    Rec. use—Laptop Replacement
    Manufacturer—WD
    Model name—WDS100T3X0E
    Model—WDBBDL0010BNC-WRSN
    Dimensions—3.10 x 0.80 x 0.50 in
    Weight—0.5 lb
    Retail packaging—Single Piece
    Use—Internal
    Device Compatibility—

    Questions and answers

    Which one should I buy for a gaming PC?
    Both can go in the same build, but they do different jobs. The SN770 adds fast game storage; the A-Tech kit adds 16GB of system memory. If you can only buy one, pick based on whether you are short on storage or on RAM.
    Can I use the A-Tech kit in a laptop?
    No. It is a 288-pin desktop DIMM. Laptops need SO-DIMM memory, and the SN770 is the laptop-friendly part here because it is M.2.
    Is the SN770 really 2TB?
    The product name says 2TB, but the spec list says 1TB and gives model WDS100T3X0E, which is the 1TB SKU. Confirm the exact capacity and model number before you buy.
    Which is worth the extra money?
    The gap is small: $141.57 for the A-Tech kit versus $145.98 for the SN770. Neither is an upgrade over the other, so spend on whichever part your machine actually needs.
    Will the A-Tech kit work with my DDR4 motherboard?
    It should if your board takes 288-pin non-ECC DDR4 DIMMs at 3200MHz. Check the listing carefully, because the same page also lists DDR3, 240-pin and 1600MHz specs.
    Which holds value better if I resell?
    The WD_BLACK SN770. It is a recognized model number that gamers search for, while the A-Tech kit is a generic brand with lower resale appeal.

    More comparisons

    • Silicon Power P34A60 1TB NVMe PCIe Gen3x4 M.2 2280 Internal Solid State Drive vs Western Digital WD_BLACK SN770 2TB M.2 NVMe Internal SSD
    • A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM vs Crucial 32GB (2x16GB) DDR5 5600MHz SODIMM Laptop Memory Kit
    • A-Tech 16GB Kit (2x8GB) DDR4 3200MHz (PC4-25600) DIMM Desktop PC Memory RAM vs Silicon Power P34A60 1TB NVMe PCIe Gen3x4 M.2 2280 Internal Solid State Drive
    PC
    Interface—NVMe
    Wireless Connectivity—No
    Durability—Not crush-proof
    NVMe Support—Yes
    PCIe Support—Yes
    Cache—nCache 4.0 Technology
    Data Encryption—No 256-bit AES hardware-based encryption
    Design Highlights—Single-sided
    Typical Users—Gamers
    Removable—No