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Introduction

We tested another low-cost SSD, the Kingston A400 120 GiB. Let’s see how does it perform against its competitors. Check it out!

Recently, we tested four 120 GiB new-generation entry SSDs: the WD Green, the Corsair Force LE, the Kingston SSDNow UV400, and the SanDisk SSD Plus, which are some of the most inexpensive SSDs available today. Now we are including a new inexpensive SSD: the Kingston A400 120 GiB.

Just like most new SSDs, the A400 uses TLC (triple level cell) memories. This kind of memory stores not two, but three bits per cell. It allows a higher data density and, thus, a smaller manufacturing cost for a same capacity chip.

The bigger issue with TLC memory chips, compared to the two-bit MLC chips (and even more compared to the SLC memory chip, that store only one bit per cell) is the shorter lifespan, because there is more cell wearing on the erasing process (executed before writing new data).

The TBW, which stands for total bytes written, meaning the amount of data written on the drive before it begin to experience tearing problems. Obviously, typical TBW values are very high number and must not worry home users, but it makes this model inadvisable for applications that need a big amount of data writing, like servers or workstations for working with raw video files, for example.

In the table below, we compared the tested units. All of them use SATA-600 interface and the 2.5” form factor, with 7 mm height.

Manufacturer

Model

Model #

Nominal capacity

Price

Kingston

A400

SA400S37/120G

120 GiB

USD 48

Western Digital

WD Green

WDS120G1G0A

120 GiB

USD 55

Corsair

Force LE

CSSD-F120GBLEB

120 GiB

USD 50

Kingston

SSDNow UV400

SUV400S37/120G

120 GiB

USD 41

SanDisk

SSD PLUS

SDSSDA-120G

120 GiB

USD 45

In the table below, we compared technical specs of the tested drives.

Model Controller Buffer Memory TBW
Kingston A400 Phison S11 4x 32 GiB Kingston FH32B08UCT1-OC 40 TiB
WD Green Silicon Motion SM2258XT 4x 32 GiB SanDisk 05497 032G 40 TiB
Corsair Force LE Phison PS3110-S10C-12 256 MiB Nanya NT5CC128M16IP-DI 4x 32 GiB Toshiba TT58G51ARA 30 TiB
Kingston SSDNow UV400 Marvell 88SS1074 256 MiB Nanya NT5CC128M16FP-DI 8x 16 GiB Kingston FT16B08UCT1-0F 50 TiB
SanDisk SSD PLUS Silicon Motion SM2246XT 2x 64 GiB SanDisk 05446 064G N/A