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Product comparison · 2 internal solid state drives

Samsung PM871b 512 GB 2.5" Serial ATA III TLC vs Samsung SM963 1.92 TB M.2 PCI Express 3.0 NVMe MLC

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  • 9specifications compared
  • 9differ
  • 0identical
  • 4known for one product only

Key differences

  • SSD capacity
    • 512 GB
    • 1.92 TB
  • SSD form factor
    • 2.5"
    • M.2
  • Interface
    • Serial ATA III
    • PCI Express 3.0
  • Memory type
    • TLC
    • MLC
  • Component for
    • PC
    • PC/Laptop
  • Read speed
    • 540 MB/s
    • 2100 MB/s
  • Write speed
    • 500 MB/s
    • 1400 MB/s
  • Random read (4KB)
    • 97000 IOPS
    • 430000 IOPS

Side by side

Differences highlightedShow differences only
13 specifications
A

Samsung

PM871b 512 GB 2.5" Serial ATA III TLC

Model PM871b

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B

Samsung

SM963 1.92 TB M.2 PCI Express 3.0 NVMe MLC

Model SM963

View product
Features9 differ
SSD capacityDiffers512 GB1.92 TB
SSD form factorDiffers2.5"M.2
InterfaceDiffersSerial ATA IIIPCI Express 3.0
Memory typeDiffersTLCMLC
NAND flash typeKnown for oneTLC (Triple Level Cell)
Component forDiffersPCPC/Laptop
Data transfer rateKnown for one6 Gbit/s
Read speedDiffers540 MB/s2100 MB/s
Write speedDiffers500 MB/s1400 MB/s
Random read (4KB)Differs97000 IOPS430000 IOPS
Random write (4KB)Differs88000 IOPS40000 IOPS
NVMeKnown for oneYes
Logistics dataidentical
Harmonized System (HS) codeKnown for one84717070

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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