Third Generation 7K1000.C (Two Platters, 2009)
The "C" is Hitachi's new model. Using the same storage density and technology that other manufacturers used to reach 2TB across four platters, Hitachi decided to stay in the mainstream and limit the 7K1000.C to two platters and 1TB. Performance-wise, the C's throughput went up to 135 MB/s—not quite enough to beat the 150 MB/s peak that Samsung’s Spinpoint F3 family reaches, but still sufficient to keep some of the competition in check. Check out our Desktop Hard Drive charts for a comprehensive comparison.
Also note the lower surface temperatures. The first-gen five-platter drive went up to 48°C. The second-generation model stayed at 42°C max. With the C, we measured 41°C. I/O performance has increased, as well, which is probably more a result of performance adjustment than technology progress.
