8K Random Read/Write
The Optimus provides much more performance in a tighter range than the Vector and 840 Pro.
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 Vector truly shines with pure random read workloads, again topping the chart. The 840 Pro performs admirably as well, managing to best the Optimus in this test.
The average 8K random write speed flips the tables on the client SSDs, highlighting an inherent strength of the Optimus.
The relevant results of this battery of tests again fall to our write percentage testing. We can observe the massive drop in performance of the client hardware with the addition of even the slightest of write workloads.
The Vector manages to provide 60% of its I/O during the test at 4ms, much better than the competing SSDs. The numerous results that fall much higher, up to the limit of our recording at 200ms, conspire to remove the latency advantage. The Optimus provides steady performance with the highest results landing at 10ms.
Both the Vector and the 840 Pro had large percentages (10.7% and 8.2%, respectively) fall higher than our chart illustrates, at 200-400ms. More concerning is the smattering of I/O's that fell into the 800-1000ms range for both SSDs.
The Optimus again requires the most power for operation, and the Vector touts an impressively low power consumption.
The Optimus again proves to be more efficient, with an average of 2,800 IOPS per Watt. The Vector comes in second with 1,300 IOPS per Watt. The Samsung 840 Pro comes in a distant third place.