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Rectangular 2.5 inch internal SSD with silver metal casing and label sticker

SanDisk

SanDisk X400 2.5" 1TB SATA internal SSD SD8SB8U-1T00-1122

SKU CH-Q2W5-K4MP0 MPN SD8SB8U-1T00-1122

2.5 inch SATA internal solid state drive with 1TB capacity, up to 545 MBps sequential read and 520 MBps sequential write

  • Device TypeInternal Solid State Drive (SSD)
  • Form Factor2.5"
  • Capacity1TB
  • Memory ComponentsTLC
  • InterfaceSATA III
  • Max Sequential ReadUp to 545 MBps

Options 1TB

  • Up to 545 MBps sequential read for fast file access
  • Up to 520 MBps sequential write for quick data saves
  • 95,000 IOPS random read speeds up everyday tasks
  • 75,000 IOPS random write improves multitasking responsiveness
  • 75M hours MTTF indicates long-term reliability

What the product is

The SanDisk X400 1TB SATA SSD is a 2.5 inch internal drive built with TLC flash for notebooks, ultrabooks and desktops. It delivers sequential reads up to 545 MBps and writes up to 520 MBps with random performance of 95,000 read and 75,000 write IOPS.

What to check before ordering

Confirm the system has a free 2.5 inch drive bay or caddy and a spare SATA III port with a matching data and power cable. The drive is 7.00mm high and 69.85mm wide, so verify the bay accepts that thickness. Operating temperature range is 0°C to 70°C.

How it fits into a build

The drive slots into standard 2.5 inch bays as a drop-in replacement for mechanical hard disks. It uses the SATA interface and requires no additional drivers for TCG OPAL 2.0 encryption support. nCache 2.0 and LDPC error correction help maintain data integrity during heavy workloads.

Highlights

  • Up to 545 MBps sequential read for fast file access
  • Up to 520 MBps sequential write for quick data saves
  • 95,000 IOPS random read speeds up everyday tasks
  • 75,000 IOPS random write improves multitasking responsiveness
  • 75M hours MTTF indicates long-term reliability

Specifications

BrandSanDisk
SeriesX400
ModelSD8SB8U-1T00-1122
Device TypeInternal Solid State Drive (SSD)
Form Factor2.5"
Capacity1TB
Memory ComponentsTLC
InterfaceSATA III
Max Sequential ReadUp to 545 MBps
Max Sequential WriteUp to 520 MBps
4KB Random ReadUp to 95,000 IOPS
4KB Random WriteUp to 75,000 IOPS
MTTFUp to 1.75M hours
FeaturesUp to 1TB in a single-sided M.2 2280 and 2.5" 7mm form factors
nCache 2.0 maximizes read/write operations and improves responsiveness
Greater reliability with DataGuard Client and the new LDPC error correction mechanism
Available in 128GB, 256GB, 512GB, and 1TB capacities in both 2.5" 7mm and M.2 2280 form factor
Better slumber mode for greater low power efficiency
TCG Opal 2.0 support
Operating Temperature0°C ~ +70°C
Storage Temperature-55°C ~ +85°C
Max Shock Resistance1500G
Max Vibration ResistanceOperating: 5.0 gRMS, 10 - 2000 Hz
Non-operating: 4.9 gRMS, 7 - 800 Hz
Height7.00mm
Width69.85mm
Depth100.00mm
Weight37.40g
Shipping weight0.09 kg
Package size152 × 121 × 19 mm

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the SanDisk X400 1TB 2.5" SSD come with a mounting bracket or cloning software, or must they be bought separately?

The drive ships as a bare 2.5" 7mm SATA III unit; mounting brackets, SATA cables and cloning software are not included and must be sourced separately.

Should I choose the 1TB 2.5" model or the M.2 2280 version for my laptop upgrade?

Pick the 2.5" 7mm model if your laptop has a standard 2.5" SATA bay; pick the single-sided M.2 2280 model if the slot is M.2 SATA — both deliver 545 MB/s read and 520 MB/s write.

What do the 545 MB/s read and 520 MB/s write figures mean when the drive is installed in a typical SATA III system?

They represent maximum sequential throughput over SATA III; real-world speeds depend on the host controller, file system and workload, while 95,000 read IOPS and 75,000 write IOPS reflect 4KB random performance.

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