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Comparison Kingston A2000 M.2 SA2000M8/250G 250 GB vs A-Data XPG GAMMIX S5 M.2 AGAMMIXS5-256GT-C 256 GB

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Kingston A2000 M.2 SA2000M8/250G 250 GB
A-Data XPG GAMMIX S5 M.2 AGAMMIXS5-256GT-C 256 GB
Kingston A2000 M.2 SA2000M8/250G 250 GBA-Data XPG GAMMIX S5 M.2 AGAMMIXS5-256GT-C 256 GB
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Placementinternalinternal
Size250 GB256 GB
Form factorM.2M.2
M.2 interfacePCI-E 3.0 4xPCI-E 3.0 4x
Technical specs
ControllerSilicon Motion SM2263ENG
Memory type3D TLC NAND3D TLC NAND
NVMe
 /1.3/
Write speed1100 MB/s1200 MB/s
Read speed2000 MB/s2100 MB/s
Shockproof1500 G1500 G
MTBF2 m h2 m h
Write IOPS180 K180 K
Read IOPS150 K190 K
TBW150 TB150 TB
DWPD0.3 times/day0.3 times/day
Manufacturer's warranty5 years5 years
General
Data encryption
M.2 coolingradiator
Size22x80 mm22x80 mm
Weight6 g11 g
Added to E-Catalogaugust 2019january 2019

Size

Nominal drive capacity. This parameter directly determines not only the amount of data that can fit on the device, but also its cost; many SSD models even come in several versions that differ in capacity. Therefore, when choosing, it is worth considering the real needs and features of the application — otherwise you can overpay a significant amount for volumes that are not needed in fact.

In terms of actual values, a capacity of 120 GB or less is considered small these days. This can also be equated with a 240 GB SSD. Average values are already considered 500 GB, increased — 1 TB(in the range of which SSDs fall 400 and 800 GB). And the most capacious modern SSDs can accommodate 2 TB, 4 TB and even more.

Controller

Model of the controller installed in the SSD.

The controller is a control circuit, which, in fact, ensures the exchange of information between the memory cells and the computer to which the drive is connected. The capabilities of a particular SSD module (in particular, read and write speed) largely depend on this particular scheme. Knowing the controller model, you can find detailed data on it and evaluate the capabilities of the drive. For simple everyday use, this information is usually not needed, but for professionals and enthusiasts (modders, overclockers) it can come in handy.

Nowadays, high-end controllers are produced mainly under such brands: InnoGrit, Maxio, Phison, Realtek, Silicon Motion, Samsung.

Write speed

The highest speed in write mode characterizes the speed with which the module can receive information from a connected computer (or other external device). This speed is limited both by the connection interface (see "Connector"), and by the characteristics of the device of the SSD itself.

Read speed

The highest data exchange rate with a computer (or other external device) that the drive can provide in read mode; in other words — the highest speed of information output from the drive to an external device. This speed is limited both by the connection interface (see "Connector"), and by the characteristics of the device of the SSD itself. Its values can vary from 100 – 500 MB / s in the slowest models to 3 Gb / s and higher in the most advanced ones.

Read IOPS

The IOPS provided by the drive in read mode.

The term IOPS refers to the maximum number of I / O operations that an SSD module can perform per second, in this case, when reading data from it. By this indicator, the speed of the drive is often evaluated; however, this is not always true. Firstly, the IOPS values of different manufacturers can be measured in different ways — by the maximum value, by the average, etc. Secondly, the advantages of high IOPS become noticeable only with some specific operations — in particular, when copying numerous files at the same time. In addition, in fact, the speed of the drive may be limited by the system to which it is connected. In light of all this, it is generally acceptable to compare different SSD modules by IOPS, but the real difference in performance is likely not to be as noticeable as the difference in numbers.

For modern SSDs in read mode, an IOPS value of less than 50K is considered a very limited indicator, in most models this parameter lies in the range of 50 – 100K, but there are also higher numbers.

Data encryption

Data encryption ensures the protection of storing information on a disk: only someone who knows the password can access encrypted information. The encryption module is an integral part of the drive and does not depend on the computer to which it is connected. The ability to encrypt data is critical if you plan to write confidential information to discs; this feature is especially useful for portable drives and laptop drives, which are more at risk of theft than fixed systems and their components.

M.2 cooling

The presence of a cooling radiator in the design of the M.2 form factor drive.

The heatsink is usually a metal plate attached to the drive board. It improves heat dissipation, which is especially important under high loads associated with handling large amounts of information. M.2 drives with a heatsink are intended mainly for high-performance systems, in particular gaming ones.

There is also a special type of thin and light graphene radiators. They are glued to the surface of the M.2 SSD, covering the key areas (controller and memory chips) that generate the most heat. This allows heat to be distributed more evenly and its accumulation to be minimized.

We also note that M.2 radiators are found as equipment on motherboards. So if the drive itself does not have this function, you can choose a “motherboard” with a radiator for it.
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