Folks looking to treat themselves to a new SSD may want delay the upgrade for a couple of weeks. With nearly double the read speed of Intel's second-gen X-25M, it goes without saying that the new drives are aimed at performance buffs. The 510 series touts peak read and write rates of 470MB/s and 315MB/s, though it's unclear if those speeds are limited to the largest capacity model. By comparison, the quickest X25-M G2 has read and write rates of 250MB/s and 100MB/s.