Best performance than its big brother the Z7K1000 and better as the SSHD to 5400trs, 32mo, and 8GB NAND. Does not suit the taste of everyone, he very slightly the noise under full load, as it is 100% mechanical A very good alternative to SSDs that have a much lower capacity and a price elevé For the detractors of "mechanical" it is stupid to have a SSHD or hyper-performance SSD if your USB key or portable hard drives do not follow the reading rate / writing, which is the case today. The only alternative would be the last Seagate SSHD 64mb cache, 5400trs, 8GB Nand 500GB or 1TB, the series STMLxxxx, for those who work with huge pictures, videos, and databases that are actually faster than him. Those whose laptop is old, SATA II, will see a good "BOOST" will produce a lesser cout.De even for new laptops of trade, if you are looking for information on your hard drive, you'll see it ' is a SATA II, and 8mo 5400trs ...... Change to that or his big brother, you will not be beneficial in speed and capacity !!