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Monday, May 12, 2014
Toshiba HG6 256GB 2.5-inch SSD review

1. Features, specs

We have in our labs one of the Toshiba's latest HG series of Solid State Drives (SSDs). The HG6 mainstream drives take advantage of Toshiba’s Advanced 19nm (A19nm) toggle 2.0 MLC (multi level cell) NAND, which delivers advances in performance and power efficiency.

The HG6 series SSDs are available in capacities ranging from 60GB to 512GB and boast maximum sequential read speeds of 534MB/s and maximum sequential write speeds of 482MB/s. It is based on an SSD controller made by Toshiba. The controller supports ‘adaptive SLC emulation’, which allows for improved writing performance.

The drives are available in a variety of form factors, including space saving mSATA, M.2 and in standard 2.5inch (64mm) widths with heights of 7mm and 9.5mm.

The drives are fitted with a 6Gbit/s SATA 3.1 interface and include Adaptive Size SLC Write cache technology and optional Self Encrypting feature compliant to TCG-Opal 2.0. All HG6 SSDs incorporate Toshiba’s Quadruple Swing-By Code (QSBC) for improved error correction and reliability. Toshiba says that the drives have a reliability rating (MTTF) of up to 1,500,000 hours.

Today we will test the 2.5-inch, 512GB HG6 SSD (THNSNJ256GCSU, 7.0mm version). It is slim enough to fit inside the latest ultra-portable laptops. Below you see its specifications:

256 GByte
Toshiba A19nm MLC NAND Flash Memory
Performance: Max. seq. read (2.5'' 512 GB model)
  • 534 MB/s (510 MiB/s)
Performance: Max. seq. write (2.5'' 512 GB model)
  • 482 MB/s (460 MiB/s)
ACS-2, SATA Rev. 3.1 (1.5/3/6 Gbit/s)
Connector type
Standard SATA
Supply voltage
5.0 V +/- 5 %
Power consumption (Largest capacity model)
Active: 3.3 W typ.
Idle: 125 mW typ.
100 mm x 69.85 mm x 7 mm
Weight (typ.)
49 - 53 g
Case temperature (operating)
  • From 0 C to +70 C
Temperature (non-operating)
  • From -40 C to +85 C
Vibration (operating)
10 - 2,000Hz: 20 G
Vibration (non-operating)
10 - 2,000Hz: 20 G
Shock (operating)
0.5 ms: 1500 G
Shock (non-operating)
0.5 ms: 1500 G
1,500,000 Hours
Additional features
  • Translation mode which enables any drive configuration
  • 28-bit LBA mode commands and 48-bit LBA mode commands support
  • Multi word DMA, Ultra-DMA, Advanced PIO mode
  • Automatic retries and corrections for read errors
  • SED models are based on TCG OPAL Ver. 2.0 standard
  • SED models also support Wipe Technology

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