It's been quite a while since we heard from JMicron, and we've never recommended a SSD with a JMicron controller in it. The company was responsible for the worst SSDs in history, like the second generation Ford Mustangs based on a Pinto, they were a stop gap in history before the good products came to market.
Since the dark days, JMicron has improved the user experience, and made ground in the entry-level SSD market, winning designs with Kingston and a few other reputable manufacturers. For the most part, manufacturers choosing to use JMicron controllers did so by tucking the drives away from media. Is that about to change?
I hope that Kingfast doesn't mind our diligence on this review, which has taken four months to write. Given the reputation of the controller manufacturer and my reputation as a journalist, this article could really go two ways.
The first way being that the controller proved worthless, and the article could go up right away; or the second (and who would have thought this is the way it would go), this controller is actually pretty good, and needed to be abused before I put my neck on the chopping block to say so. Here we are, four months later, but I'm not too worried about falling blades, the JMicron JM662 controller is actually pretty good.
The JMF667H is JMicron's third-generation SSD controller design, and features four channels to flash and a SATA III connection to the host. Based on the ARM9 instruction set, the 32-bit processor is a modern design with support for the latest Flash Forward and IMFT flash.
The 4-channel design, when paired with low cost Toshiba 19nm TOSP flash, also means the drive is inexpensive. Hell, it's a down right bargain at $126.50 at the time of writing for a 240GB model. Let's not get too far ahead of ourselves though. Let's take a look at the specs, and then circle back to the overall value after seeing the performance.
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