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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

  • Total capacity1 TB
  • Sequential read speedUp to 545 MB/s
  • Sequential write speedUp to 520 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Model 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.

How it compares

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

Price $230.99
Pricier than about 60% of the 1,994 comparable items (median $180.49).
Total capacity 1 TB
Typical for this category: the median of 1,368 items is 1 TB.
Sequential read speed Up to 545 MB/s
Lower than about 82% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $230.99 per TB
Pricier than about 66% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSanDisk
Product lineX400
Model nameSD8SB8U-1T00-1122
Total capacity1 TB
Product typeInternal Solid State Drive (SSD)
Performance
Sequential read speedUp to 545 MB/s
Sequential write speedUp to 520 MB/s
Random read (4K)Up to 95,000 IOPS
Random write (4K)Up to 75,000 IOPS
Storage
NAND flash typeTLC
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100 mm
Product weight37.4g
Shipping weight0.09 kg
Package size152 × 121 × 19 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-55 °C to 85 °C
Max shock tolerance1500G
Vibration toleranceOperating: 5.0 gRMS, 10–2000 Hz
Non-operating: 4.9 gRMS, 7–800 Hz
More details
Mean time to failureUp to 1.75M hours

Other versions of this model

3 more in the same range

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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