The Sandisk Ultra Plus SSD is one of two solid state drives simultaneously introduced by SanDisk at the start of 2013. This SATA III 6 GBps drive can deliver peak perfomances of 530 MB/s and 445 MB/s for sequential read and write respectively while IOPS for 4k random read is 82,000. It uses Marvell’s 88SS9175 controller, an improved version of the 88SS9174.
Crucial opted for Phison’s PS3105-S5 controller in the V4, which is a low-cost SATA 2.0 (3 Gbps) drive. It supposedly targets consumers who are looking for an affordable SSD with similar perceived speed as the high-end models. The V4′s top sequential read and write speeds are 230 MB/s and 190 MB/s and the drive is available in capacities ranging from 32 GB up to 256 GB.
Samsung’s 840 Pro series was the top performing 2.5″ consumer SSD in 2012 and the start of 2013. It offers maximum sequential read speeds of up to 540 MB/s and maximum sequential write speeds of up to 520 MB/s. The drives use Samsung’s proprietary MDX controller and churns out random read IOPS at 100,000 and random write IOPS 90,000 (manufacturer numbers). The 840 Pro is available in capacities ranging from 64 GB to 512 GB.
OCZ’s Vector SSD contains the 3rd revision of the company’s Indilinx controller, the Barefoot 3, although it is the second revision inside an OCZ-only product. This controller is good for maximum sequential read and write speeds of 550 MB/s and 530 MB/s respectively. Maximum IOPS numbers for this drive specified at 100,000 for write and 95,000 for read. The available capacities at launch were 128 GB, 256 GB and 512 GB.
The Neutron GTX is a SATA revision 3.0 (6 GB/s) solid state drive from Corsair. Buyers can choose between two capacities: 120, 240 GB and 480 GB, which offer maximum sequential read speeds of up to 555 MB/s and a maximum sequential write speeds of 511 MB/s. The controller used is the ubiquitous SF-2281 from SandForce. Its maximum random 4K write IOPS for the Neutron GTX is 85,000 at 4k aligned. Like other high-end SSDs, the Neutron GTX is powered by toggle-type, synchronous NAND, in this case from Toshiba, but unlike most SandForce-based drives it also employs a DRAM cache.
The SSDNow V300 is a successor to Kingston’s V200 and like its predecessor it is a SATA 6 Gb/s solid state drive powered by SandForce’s SF-2281 controller. The available capacities are 60 GB, 120 GB and 240 GB capacities (19nm Toshiba NAND modules). I can reach maximum sequential read and write speeds of 450 MB/s.
Intel’s 520 series solid state drives are based on the popular SandForce SF-2281 controller, but with a proprietary firmware developed and validated by Intel. Intel uses its own 25 nm synchronous NAND Flash modules and the drive is capable of sequential speeds of up to 550 MB/s and 520 MB/s (read/write). Unlike the 320, 330 and 335 drives, the 520 is targeted at professional and enthusiast users and offers an extended warranty period of 5 years instead of 3 years.