Intel made its SSD 313 series official, its product page was activated, and ARK pages of its variants maintain the products are already launched. The SSD 313 series succeeds SSD 311 series, it consists of SSDs specifically designed for SSD-caching technologies such as Intel Smart Response Technology, and upcoming technologies that the upcoming "Ivy Bridge" platform brings with it, including "Rapid Start" and "Smart Connect". The SSD 313 Series is introduced in two variants, a 20 GB variant, and a 24 GB variant. The 20 GB variant offers sequential performance up to 220 MB/s and 100 MB/s (read and write), while the 24 GB variant offers 160 MB/s and 115 MB/s, which might make one wonder about the need for a 24 GB variant, given that it's also slower at 4K random-seek performance 33,000 IOPS / 4,000 IOPS vs. 36,000 IOPS / 3,300 IOPS of the 20 GB. One reason behind the 24 GB variant's existence could be that a combination of different Intel technologies partition the SSD, taking away small amounts of capacity. The extra 4 GB of capacity might more than make up for the slightly lower performance. Both drives use SLC NAND flash chips, which are more durable than MLC NAND flash, and can take more rewrite cycles (something that factors in heavily for caching SSDs). Both drives are available in 2.5" SATA 3 Gb/s and mSATA 3 Gb/s form-factors. The 20 GB variant was earlier put to test.