Silicon Motion SM2262EN Controller Preview

REAL WORLD FILE TRANSFER

We also wanted to see how performance was in a real-world use when transferring large files to the SSD. For this test, we are going to simply stress write performance by transferring over a 30GB folder of movies off of a 250GB Samsung 960 EVO to the test SSDs and time how long it takes. Once complete we can calculate the average speed.

SMI’s SM2262EN attains the highest write speed we have seen thus far, 1888MB/s.

POWER CONSUMPTION

For our power consumption testing, we have the drive connected to the system as a secondary drive. To record the wattage, we are now utilizing a Quarch Technology Programmable Power Module. It allows us to accurately measure power consumption over time and is flexible enough to allow us to test any SSD that comes our way.

Our power analysis may change as time goes on, but for now, we are looking at just a few metrics with the main goal of measuring our results against the manufacturer’s ratings. Because most consumer systems are at idle for about 80% of the time, idle power consumption is an important measure to look at when understanding the efficiency of a drive.

First up we have our results with Active State Power Management disabled. At idle it consumes 707mW of power, which is fairly good.

In the chart above, with ASPM enabled, we can see that it consumes even less power. Here it sips just 59mW at idle, making it the second most efficient result we have seen from an NVMe SSD/controller.

POWER EFFICIENCY

Finally, we wanted to post up a graph of the power efficiency of the SSDs in write transfers. We are looking at MB/s per Watt in this graph. The higher the result, the better.

With an average transfer speed of 1888MB/s and an average of 3.79W of power consumed during the transfer, the SM2262EN attains an efficiency value of 498MB/s per watt. This is the most efficient result we have seen thus far.