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SanDisk X300 2.5 inch 512GB SATA internal SSD with black metal casing

SanDisk

SanDisk X300 2.5" 512GB SATA III internal SSD SD7SB7S-512G-1122

SKU CH-ADP3-XBSC1 MPN SD7SB7S-512G-1122

2.5-inch 512GB SATA internal SSD delivering up to 530MB/s read and 470MB/s write speeds with 1,750,000-hour MTTF

  • Total capacity512 GB
  • Sequential read speedUp to 530 MB/s
  • Sequential write speedUp to 470 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Up to 530 MB/s sequential read for fast boot and load times
  • Up to 470 MB/s sequential write for quick file saves and installs
  • 94,000 random read IOPS for snappy multitasking and app launches
  • 70,000 random write IOPS for responsive system performance
  • 1,750,000-hour MTTF rating for long-term reliability

512 GB SATA III internal SSD

The SanDisk X300 is a 2.5 inch solid state drive with a 512 GB capacity and a SATA III interface. It is built for consumer laptops and desktops that need a direct replacement for a mechanical hard drive. Sequential reads reach up to 530 MBps and writes up to 470 MBps, while random performance hits 94,000 read IOPS and 70,000 write IOPS. The drive uses 1Ynm X3 flash with nCache 2.0 tiered caching and Multi-Page Recovery error handling.

Upgrade from a 2.5 inch hard drive

Replacing a traditional 2.5 inch HDD with this SSD removes the mechanical latency that limits system responsiveness. The jump is worth it when boot times, application launches and file transfers feel sluggish on the old drive. SanDisk rates the X300 at up to 1,750,000 hours MTTF and 1,500 G shock resistance, so reliability improves alongside speed. DEVSLP low-power support also extends battery life in mobile devices compared to a spinning disk.

Limits of the SATA III interface

The SATA III link caps throughput at 6 Gbps, so the X300 cannot exceed its rated 530 MBps read and 470 MBps write ceilings. Workloads that demand sustained bandwidth above this level, such as heavy 4K video editing or large database indexing, will hit the interface bottleneck. The drive operates between 0 °C and 70 °C and stores safely from -55 °C to 85 °C. Vibration tolerance is rated at 5.0 gRMS operating and 4.9 gRMS non-operating.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $156.99
Cheaper than about 56% of the 1,994 comparable items (median $180.49).
Total capacity 512 GB
Lower than about 60% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 530 MB/s
Lower than about 87% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $306.62 per TB
Pricier than about 77% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSanDisk
Product lineX300
Model nameSD7SB7S-512G-1122
Total capacity512 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 530 MB/s
Sequential write speedUp to 470 MB/s
Random read (4K)Up to 94,000 IOPS
Random write (4K)Up to 70,000 IOPS
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100.5 mm
Product weight55.8g
Shipping weight0.09 kg
Package size159 × 121 × 15 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-55 °C to 85 °C
Max shock tolerance1,500 G @0.5 msec half sine
Vibration toleranceOperating: 5.0 gRMS, 10-2000 Hz
Non-operating: 4.9 gRMS, 7-800 Hz
More details
Mean time to failureUp to 1,750,000 h

Questions about this item

Will the 7.00 mm height fit my laptop's 2.5 inch drive bay?

Yes, the drive is 7.00 mm tall and follows the standard 2.5 inch form factor, so it fits most laptop and desktop bays designed for that size.

Do I need to enable AHCI or DEVSLP in BIOS before cloning my OS to this SATA III SSD?

Connect the drive via SATA data and power cables, then enable AHCI mode in BIOS for best performance; DEVSLP low-power mode activates automatically on platforms that support Microsoft InstantGo.

How long before the 1Ynm X3 flash reaches its write endurance limit under typical consumer use?

The drive is rated for up to 1,750,000 hours MTTF and includes nCache 2.0 plus Multi-Page Recovery to extend usable life well beyond typical consumer workloads.

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