How about the ADATA 1TB SATA SSD SU900？Is it good？How about the price？

Are you have the experience to use the 1TB SATA SSD？If you haven't, maybe you can try to use the ADATA SU900. Implementing advanced 3D MLC NAND Flash and a high speed SMI controller, the SU900 features bigger storage capacities, higher efficiency, and more rugged reliability compared to 2D NAND SSDs. 

It's intelligent SLC cashing and DRAM cache buffer.

The intelligent SLC Caching algorithm allows NAND Flash memory to operate in single-level cell mode and boosts read/write performance. Besides, with the support of DRAM Cache Buffer, read/write performance can be as much as double that of solid state drives that lack a DRAM cache, or in other words that can't use onboard memory as an SSD buffer for high intensity tasks.

The multiple data protection technologies and excellent durability. 

Utilizing 3D MLC NAND flash, all 1TB SATA SSD SU900 models provide high TBW (Total Bytes Written) up to 1600TB and random R/W speed up to 85K/90K IOPS. The SU900 supports multiple data protection technologies, including internal data shaping, software/hardware write protection options, early weak block retirement, and a global wear leveling algorithm to ensure data integrity and improve SSD stability.

Q：What is the difference between SATA 3.0 & SATA 2.0 specifications?

A：The Serial ATA-International Organization has launched what is often called “SATA 3”, a 6 gigabit per second (Gbps) standard. The older SATA II specification has a maximum speed of 3Gbps.

Q：Do SSDs Require Defragmentation?

A：SSD’s use wear-leveling, which is a technique for prolonging the service life of some kinds of erasable computer storage media, such as Flash memory used in solid-state drives (SSDs). Defragmenting is not required.

From：ADATA