Today, component maker Mushkin announced plans to ship the "world's first" 480GB mSATA solid-state drive. Priced at a respectable $500, the made-in-the-USA Atlas SSD is expected to ship beginning in early January, and features a SandForce SF-2281 controller with an unthrottled IOPS, a SATA III (6Gb/s) interface and a three-year warranty. At a little over $1 per gigabyte, ultrabook power users looking to push their storage capacity beyond its current 256GB boundary may want to keep an eye out for this burly option in the coming weeks. For more details, check out the press release after the break.