HD Tach
We tested HD Tach with the benchmark's full variable zone size setting.

The i-RAM doesn't quite make it to 150MB/s in HD Tach's sustained read and write speed tests, but it's faster than any other configuration.

Unfortunately, a lack of support for 300MB/s Serial ATA transfer rates keep the i-RAM out of the running in HD Tach's burst speed test. It is the fastest drive among those that only support 150MB/s transfer rates, but that's not good enough to catch several competitors.

Since the i-RAM uses random access memory, it's no surprise that its random access time is significantly faster than our hard drives and RAID arrays.

CPU utilization results are just within HD Tach's +/- 2% margin of error in this test. Given these results, it seems likely that the high CPU utilization we observed in IOMeter was more a factor of the i-RAM's incredibly high transaction rates than any inherent CPU utilization penalty associated with using the device.