The Silicon Motion SM2262EN SSD Controller Preview: Good And Bad Amplified

Silicon Motion’s second-generation NVMe SSD controllers have all but taken over the consumer NVMe SSD market. Drives like the HP EX920 and ADATA SX8200 currently offer great performance at prices that are far lower than what Samsung and Western Digital are charging for their flagship products. These Silicon Motion-based SSDs are using the SM2262 controller – the high-end member of SMI’s current lineup – but they’re almost as cheap as the entry-level NVMe drives that use low-end controllers with limited performance. Phison’s second-generation high-end E12 controller still hasn’t hit the shelves, so Silicon Motion has no serious competition for the SM2262.

But Silicon Motion isn’t standing still. They’ve prepared an update to the SM2262 controller called the SM2262EN. This was first previewed at the same time that the SM2262 was announced, but Silicon Motion didn’t provide much guidance on the timing. The SM2262 controller hit the market with the Intel SSD 760p in January, and the SM2262EN is almost ready for release. With the SM2262EN, Silicon Motion is promising substantial performance improvements that go well beyond what we usually see from firmware optimizations, though the hardware changes relative to the SM2262 are minimal. The updated controller should hit the market in time to compete against Phison E12 SSDs and the first wave of drives with 96-layer 3D NAND.

To assess the new SM2262EN controller solution, Silicon Motion has provided us with a 2TB reference design SSD with their latest firmware, a work in progress as Silicon Motion continues to optimize performance. This is a higher capacity drive than any of the SM2262 SSDs we’ve tested, and some performance improvement may be due simply to the capacity increase. However, even at 1TB we already have several NAND dies on each of the controller’s 8 channels, so adding more dies shouldn’t have a huge impact, especially not for sequential transfers.

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