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Micron P400m 200GB Enterprise SSD Review (Page 6)

By Paul Alcorn from Feb 13, 2013 @ 4:54 CST
TweakTown Rating: 91%Manufacturer: Micron

8K Random Read/Write


8K random read and write speed is a metric that is not tested for consumer use, but for enterprise environments this is an important aspect of performance. With several different workloads relying heavily upon 8K performance, we include this as a standard with each evaluation. Many of our Server Emulations below will also test 8K performance with various mixed read/write workloads.

The average 8K random read speed of the P400m at QD256 was 39,122 IOPS, the DC S3700 was 40,766 IOPS compared to 54,767 IOPS for the Optimus.


The average 8K random write speed of the Micron P400m at QD256 was 15,394 IOPS, the DC S3700 was 20,475 IOPS and the Optimus delivered 25,096 IOPS.


Micron P400m provides 68% (3,155,955) of I/O requests in the 10-20ms range, and 18% (842,946 I/Os) in the 20-40ms range. The SAS-powered Optimus provides the lowest overall latency, dipping as low as 4ms.


The power for the Micron P400m averaged 3.89 Watts during the precondition run, the Intel averaged 4.81 Watts, and the Optimus averaged 7.7 Watts. This gives the Micron 3,954 IOPS per Watt, the Intel 4,252 write IOPS per Watt and the Optimus 3,228 IOPS.

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