Since the new cold boot attack hack is on the news, touching most of the software encryption solutions, I have wondered if it had any chance to concern also hardware encryption.
Hardware encryption is provided by a few laptop makers, generally on high-range an business models.
It has much less performance impact than software encryption, and protect the data independently from your system configuration and its partitions.
Full disk encryption is the so called hardware encryption technology used by Lenovo on my Thinkpad.