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SK hynix

SK hynix Gold S31 Spec and Price in Italy

SATA1TB2.5-inch560 MB/s read

Released August 15, 2019 ·

The Gold S31 is the only drive in this set built around a 1TB capacity point rather than 2TB, and its 600TB TBW endurance rating is exactly half the 1,200TB figure SK hynix rates on the Gold P31 and Platinum P41. It's a SATA drive with sequential speeds around 560/525 MB/s and a DRAM cache from the Quartz controller, priced at $123.99 — the lowest MSRP in this comparison. That combination points squarely at budget upgrades: replacing a spinning hard drive or an aging SATA SSD without needing NVMe.

Tied 87th of 106 models in the SSD catalog on Sequential read — 8 models share this figure. 93rd of 106 models in the SSD catalog on Sequential write.

Current best price

No tracked price — this page compares specifications alone.

Specifications

Capacity
1TB
Interface
SATA
Sequential read
560 MB/s
Sequential write
525 MB/s
Random read
95000 IOPS
Random write
87000 IOPS
Form factor
2.5-inch
NAND type
TLC
DRAM cache
Controller
SK hynix Quartz controller
Endurance (TBW)
600 TB
Warranty
5 years

Capacities

ConfigurationPart numberEndurance (TBW)Sequential writeSequential read
250GBSHGS31-250GS-2200 TB500 MB/s560 MB/s
500GBSHGS31-500GS-2300 TB525 MB/s560 MB/s
1TBSHGS31-1000GS-2600 TB525 MB/s560 MB/s

Guides for this category

How to choose an SSDFour questions decide almost every SSD purchase — what fits, how big, how fast, and how much it should cost.NVMe or SATAWhich interface your machine takes, how to tell without opening it, and what the speed difference actually buys you.How much SSD capacity you actually needHow to size a drive from what you already use, why leaving headroom matters, and when one bigger drive beats two small ones.M.2 sizes and SSD form factorsWhat 2280, 2242, and 2.5-inch mean, which one your machine takes, and how to check the keying before you buy.What SSD speed numbers actually tell youSequential versus random performance, why the number on the box describes the rarer case, and how to read it without being misled.PCIe generations for SSDsWhat Gen 3, Gen 4, and Gen 5 change, why a newer drive always works in an older slot, and when the extra speed is worth paying for.TLC, QLC, and DRAM-less SSDsWhat the NAND type and the controller's cache change about how a drive behaves, and when either is worth caring about.SSD endurance and warrantiesWhat TBW and DWPD actually promise, how much a normal machine writes, and when endurance is worth paying extra for.How to install an SSDFitting an M.2 or 2.5-inch drive, choosing between cloning and a clean install, and what to check on the first boot.When an SSD price is actually goodWhy price per terabyte beats any discount percentage, and why a good price on one capacity says nothing about the others.

What owners and reviewers say

Summarised from 1 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices

Commonly praised

  • Review coverage places its sequential performance in the same tier as the best-known SATA drives of its generation, rather than clearly behind them.
  • Reviewers single out its price against those same drives as its main reason to choose it.
  • It ships with a free cloning and data-migration utility, which reviewers note as a practical inclusion for an upgrade.
  • The five-year warranty is highlighted as matching the established SATA competition.

Commonly criticised

  • Its SLC write cache is small, so sustained writes fall back to slower speeds sooner than reviewers would like.
  • The line tops out at 1TB, which reviewers flag as a narrower range than competing SATA families offer.

Sources behind this summary

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.