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Comparison Apacer Panther AS350X AP1TBAS350XR 1 TB vs Apacer Panther AS350 AP1TBAS350-1 1 TB

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Apacer Panther AS350X AP1TBAS350XR 1 TB
Apacer Panther AS350 AP1TBAS350-1 1 TB
Apacer Panther AS350X AP1TBAS350XR 1 TBApacer Panther AS350 AP1TBAS350-1 1 TB
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Depending on the release date, the controller and memory may vary!
Depending on the release date, the controller and memory may vary!
Placementinternalinternal
Volume1 TB1 TB
Form factor2.5"2.5"
InterfaceSATA 3SATA 3
Technical specs
ControllerSilicon Motion SMI2259XT
Memory type3D TLC NAND3D TLC NAND
Number of 3D NAND layersHynix 176 - layer
Write speed540 MB/s540 MB/s
Read speed560 MB/s560 MB/s
Shockproof1500 G1500 G
MTBF1.5 m h1.5 m h
Write IOPS80 K80 K
Read IOPS93 K93 K
TBW835 TB600 TB
DWPD0.8 times/day0.6 times/day
Manufacturer's warranty3 years3 years
General
TRIM
Size100x70x7 mm100x70x7 mm
Weight60 g
Added to E-Catalogfebruary 2021august 2020
Compare Apacer Panther AS350X AP1TBAS350XR and Panther AS350 AP1TBAS350-1
Comparing Apacer Panther AS350X AP1TBAS350XR and Apacer Panther AS350 AP1TBAS350-1, it can be noted that both drives have a capacity of 1 TB and a form factor of 2.5". However, the AS350X has a higher TBW835 TB versus 600 TB for the AS350, which may be important for users planning intensive use. Also, the DWPD for the AS350X is 0.8 times/day, while for the AS350 it is 0.6 times/day. Both drives have the same read and write speeds — 560 MB/s and 540 MB/s respectively. The warranty for both devices is 3 years.
Apacer Panther AS350X often compared
Apacer Panther AS350 often compared
Glossary

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.

Number of 3D NAND layers

The number of layers essentially reflects the generation of the flash memory itself. The more there are, the higher the data density, allowing the manufacturer to store more data in the same form factor and improve the energy efficiency of new chips. For the user, this is mainly important as an indication of a more modern platform: conditionally, memory with 176, 232, or 332 layers usually belongs to more recent generations than older solutions with fewer layers.

However, the number of 3D NAND layers should not be confused with the direct speed of the SSD, because overall performance is also significantly influenced by the controller, interface, and cache. For example, a drive with more modern multilayer memory may be more appealing in terms of technology and capacity, but the actual speed of operation still depends on the entire device design.

TBW

The abbreviation TBW stands for drive time between failures, expressed in terabytes. In other words, this is the total amount of information that is guaranteed to be written (rewritten) to this module. This metric measures the overall reliability and lifespan of a drive—the higher the TBW, the longer the device will last, all other things being equal.

Note that knowing the TBW and the warranty period, you can calculate the number of rewrites per day (DWPD, see the relevant paragraph), if the manufacturer did not specify these data. To do this, use the formula: DWPD = TBW / (V * T * 365), where V is the drive capacity in terabytes, T is the warranty period (years). As for specific numbers, there are a lot of drives on the market with a relatively low TBW — up to 100 TB ; even these values are often sufficient for everyday use for a considerable amount of time. However, models with TBW at the level of 100 – 500 TB are more common. Values of 500 – 1000 TB can be classified as "above average", and in the most reliable solutions this figure is even higher.

DWPD

The number of full overwrites per day allowed by the design of the drive, in other words, how many times a day the entire drive can be guaranteed to be overwritten without fear of failures.

This parameter describes the overall reliability and durability of the drive. It is similar in meaning to TBW (see the relevant paragraph), one value can even be converted to another, knowing the warranty period: TBW = DWPD*V*T*365, where V is the drive capacity in terabytes, and T is the warranty period in years . However, DWPD is somewhat more specific: it describes not only the total time between failures, but also the limit on the number of rewrites per day; if this limit is exceeded, the drive may fail earlier than specified in the warranty. However, even small DWPD values — 0.5 – 1 time per day, or even less than 0.5 times a day — often turn out to be sufficient not only for simple everyday use, but even for professional tasks. Higher rates — 1 – 2 times a day or more — are rare; at the same time, it can be both high-end and low-cost SSD modules.