We tested HD Tach with the benchmark's full variable zone size setting.
The new X25-M is every bit as fast as the old drive in HD Tach's sustained read speed test, which makes it quicker than the Summit and the Vertex. However, those drives more than double the X25-M's transfer rate in the sustained write speed test. At least the G2 drive is a little quicker than the first revision. Amusingly, both exceed Intel's 70MB/s maximum sustained write speed rating.
The move to a slower but larger DRAM cache costs the X25-M a few MB/s in HD Tach's burst speed test. Still, the G2 is still quicker than the OCZ drives here.
HD Tach's random access time test doesn't tease out meaningful differences between these SSDs. Their near-instantaneous access times are simply too quick.
Our CPU utilization results are within HD Tach's +/- 2% margin of error in this test.
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