Hitachi Deskstar 7K1000: HDT721075KLA330
The series is named after the senior five-platter model which is based on 200GB platters. The HDT721075KLA330 has only four platters, though. If you want to learn more about this series, you can refer to this comparison of different series of hard disk drives from Hitachi.
Interestingly, the Hitachi drive is the only four-platter drive in this review to be equipped with 32 megabytes of cache memory. The other such drives have a 16MB buffer, being inferior to the three-platter models in this respect.
Samsung SpinPoint F1: HD753LJ
This series signified a fabulous breakthrough on Samsung’s part. The company made a jump from 500GB drives right to 1-terabyte ones, skipping over 750GB models (a 750GB drive was released within the new series headed by a 1TB model), and the F1 series (a telling name) was the first one to be based on 334GB platters. Thus, the 750GB model of the series has three platters only. We wonder if it has the same recording density as the 1TB model that produced superb results in our tests. We’ll check this out in the read speed tests.