We tested HD Tach with the benchmark's full variable zone size setting.
So much for DRAM's peak bandwidth advantage over flash memory. In HD Tach's sequential transfer rate drag race, the ANS-9010 only manages to read at 173.6MB/s and write at 144.1MB/s. What's more, it's slightly slower when running in RAID 0. Those sustained transfer rates do put ACard's RAM disk ahead of the i-RAM, but the X25-E Extreme is much faster. Even the X25-M is quicker in the read speed test.
The ANS-9010's burst performance isn't as quick as one might hope, either. The drive doesn't even manage 200MB/s with one SATA port plugged in, although it does eclipse 300MB/s when running in RAID.
Solid-state drives do exceptionally well in random access time tests, and the ANS-9010 is no exception. The drive's seek times are essentially instantaneous, and interestingly, they're just a little bit quicker when running in single-drive mode. I'm hesitant to make too much of the 0.1-millisecond difference between single-drive and RAID modes, but it was consistent across three test runs, suggesting that there's a hint of a latency penalty associated with splitting the RAM disk's memory between two SATA ports.
HD Tach's margin for error in the CPU utilization test is +/- 2%, which narrows our results considerably.
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