They use SandForce SF-2281 controller chips and make do with fewer NAND chips than usual
The stream of CES 2013 product announced continues with Mushkin revealing that its collection of USB 3.0-connected flash drives has increased by one.The image gallery shows Mushkin's flash drive without its coverings, and it is only to prove a point: Mushkin used fewer NAND Flash chips than normal when making it, but still managed to cram 240 GB of available space into it.
The Sand Force SF-2281 is another important element, as it enables transfer speeds of 300 MB/s.
The controller is only part of it though. The host controller PCB holding it is wired to another, which has a USB 3.0 to SATA 6.0 Gbps host controller.
Mushkin, unfortunately, did not disclose the price or ETA (estimated time of arrival). It shouldn't be too long before shops start taking orders.