Not all SSDs are called conscience, and picking depends on these two elements.
Jinhu Weibao Trading Co., Ltd , https://www.weibaoxd.com
Tip 1: Core components/firmware determines quality
For SSDs, there are three main parts that affect their performance. One is the main control, which is the core component of the SSD; the second is the NAND Flash flash memory chip; the third is the firmware development. Among them, the main control and flash memory have the greatest impact on SSD performance.
1, the main control chip analysis
The main control chip is actually a processor, which is mainly divided into two types: compression algorithm and non-compression algorithm. It is the heart and engine of a solid state drive.
The main control of the non-compressive algorithm is in the mainstream, covering the high/medium/low-end three-level product line. More representative are the group PS3110 quad-core, Marvell 88SS9188 dual-core master, Huirong SMI2246EN single-core master.
The main control position of the compression algorithm is that Seagate has acquired the LSI's SandForce master. The typical representative is SF2281 master, classic products such as Intel 330 series / 520 series, ADATA SX900/SP900 and so on.
2, flash chip analysis
If the master chip is the heart and the engine, then the flash chip is blood and gasoline. The flash chip is the storage medium for the entire solid state drive, or the life of the entire solid state drive depends on the flash memory.
According to the structure, it is divided into SLC (single layer), MLC (double layer), and TLC (three layers). The current TLC flash memory has risen to the mainstream, and MLC flash memory has gradually retreated to the mainstream.
Flash memory is divided into original and non-original. The quality of the original factory is good, but the procurement cost is high. Non-original flash memory purchase costs are low, and the quality is basically maintained at the middle and the middle.
Flash memory is divided into two flash architectures, Toggle DDR and ONFI. Among them, ONFI flash is classified into two types: synchronous and asynchronous flash. The synchronous flash is twice the performance of asynchronous flash.
Tip 2: Distinguish between performance indicators
The core hardware fundamentally determines the quality and performance of the SSD, so whether there are quantitative indicators for consumers to intuitively distinguish the performance of the SSD, the answer is yes. SSDs have two large-scale indicators, one is the read/write speed of MB/sec, and the other is the number of interface reads and writes. The unit is IOPS, which is the number of read/write (I/O interface) operations per second.