This is interesting. Both drives require the same 0.8W at idle.
At peak throughput, we measured 2.7W on the three-platter 1TB drive, while the 640GB, two-platter drive consumed 2.6W.
The three-platter drive clearly requires more power when providing a defined data stream, such as HD video.
Throughput performance per watt, and hence power efficiency, is better on the 12.5 mm drive, as it delivers more throughput at slightly less power.
The contrary applies in the workstation efficiency test, where a large number of I/O operations per second is required. Apparently, the 640GB, two-platter model is faster.
- Two- And Three-Platter Notebook Hard Drives
- 9.5 mm: MK6465GSX, 640GB
- 12.5 mm: MK1059GSM, 1,000GB
- Applications And Comparison
- Comparison Table And Test Setup
- Benchmark Results: Throughput And Interface
- Benchmark Results: I/O Performance And Access Time
- Benchmark Results: PCMark Application Performance
- Benchmark Results: Power And Efficiency