Hitachi’s second 3 TB drive spins at 7200 RPM and has 64 MB of cache memory. As a result, its specified throughput is much higher: 1656 Mb/s instead of 1366 Mb/s (that's 207 versus 170 MB/s). Real-world throughput reaches up to 152 MB/s according to h2benchw and 148 MB/s in our Iometer streaming reads test. These are commendable results that are only beaten by the new Deskstar 7K4000 and Seagate’s Barracuda 3 TB, which actually gets close to 200 MB/s.
The 7K3000 family is also available in 2 TB and 1.5 TB flavors, and they’re all specified for 24/7 operation. Power consumption is higher on this 7200 RPM drive than on Hitachi's 5K3000. That's simply the price you have to pay for higher throughput. We measure 4.9 W at idle for the 5400 RPM 3 TB drive and 7.1 W at idle on this 7200 RPM model. The 4 TB versions have very similar power requirements.
Since the performance difference between the 3 and 4 TB drives isn't too significant, we again have to recommend that anyone shopping for a high-capacity disk consider living with the 3 TB model if the last gigabyte isn't absolutely imperative. You simply spend a lot less money per gigabyte when you compromise down to the smaller drive.
You can find comprehensive hard drive performance comparison in our 2012 Desktop HDD Charts.
- Three And 4 TB Hard Drives For Your Digital Lifestyle
- 3 TB: Hitachi Deskstar 5K3000 (HDS5C3030ALA630)
- 3 TB: Hitachi Deskstar 7K3000 (HDS723030ALA640)
- 3 TB: Seagate Barracuda (ST3000DM001)
- 3 TB: Seagate Barracuda XT (ST3300651AS)
- 3 TB: Western Digital Caviar Green (WD30EZRX)
- 4 TB: Hitachi Deskstar 5K4000 (HDS5C4040ALE360)
- Hitachi Deskstar 7K4000 (HDS724040ALE640)
- Test Setup And Comparison Table
- Benchmark Results: Transfer Diagrams
- Benchmark Results: Interface And Throughput
- Benchmark Results: Access Times And 4 KB Random I/O
- Benchmark Results: I/O Workloads
- Benchmark Results: PCMark 7
- Benchmark Results: Temperature And Power Consumption
- Capacity Marches Forward, Commands A Premium