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Silicon Motion SM2246EN SSD Controller Preview - Benchmarks - Power and Thermal Testing

Silicon Motion SM2246EN SSD Controller Preview
Silicon Motion is looking to take a large portion of LSI SandForce and Marvell's market share with a new 4-channel SSD controller. Let's take a look.
By: | SSDs in Storage | Posted: Sep 2, 2013 1:01 pm

Bapco MobileMark 2012 1.5


Version and / or Patch Used: 2012 1.5

Developer Homepage:

Test Homepage:


MobileMark 2012 1.5 is an application-based benchmark that reflects usage patterns of business users in the areas of office productivity, media creation and media consumption. Unlike benchmarks that only measure battery life, MobileMark 2012 measures battery life and performance simultaneously, showing how well a system design addresses the inherent tradeoffs between performance and power management.




Our MobileMark battery life test with the Lenovo W530 and the SiMo reference design produced results just behind the LSI SandForce B02 controller with the same Toshiba Toggle flash (ADATA SX900).



PCMark Vantage HDD Test - Power Consumption




I'm a bit surprised the reference design didn't do better in the battery life test after looking at the power consumption while running a trace based benchmark.


The Silicon Motion reference design barely sips power, it's like a cactus is with water. In a few weeks we should have our first Haswell based notebook with working DEVSLP. We'll try to run the drive with DEVSLP working at that time and see where it stands then.



Thermal Test - BETA




It's difficult to make excessive heat without using excessive power. Here we see the Silicon Motion SM2246EN controller at idle for 10 minutes (top) and under an intense 4K load for ten minutes (below). The ambient temperature for both measurements was 20C.


The SM2246EN controller idles around 30C and under load the controller reaches 52.6C. Measuring point 2 is the closest NAND flash package to the controller. With such a low temperature coming from the controller, we don't have to worry about the flash reaching temperatures outside of spec.


We look for heat issues for both stability and endurance reasons.

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