pureSilicon this week showed its 1TB 2.5-inch SSD drive. Featuring standard SATA II drive interface, the device, is "the most compact SSD per gigabyte: 15.40GB per cubic centimeter in a 2.5-inch form-factor" -- at least three times greater than any other SSD on the market, the company claims. The company says the high density has been achieved through innovative engineering techniques and its "exc