Unfortunately the SSD controller did not have any support for DRAM cache, and with the NAND technology available at the time this made random writes very slow (the JMF602B improved this only slightly).

[2] In October 2010, JMicron was scheduled to list on the Taiwanese Gre Tai Securities Market (GTSM).

[2] Also in 2010, a Gartner tandem research report reveals JMicron to be first in interface controller chip market share.

[7] In 2010 stolen private keys certificates were used to digitally sign rootkit drivers in Stuxnet virus.

[8][9] After developing its own physical layer and high speed technology over the preceding years because of flat growth in the long term, JMicron diversifies from the base notebook and motherboard controller business.

[11] Analysis in 2013 reveals that SSD controller technology and high-speed transmission interface IC accounts for 29% and 67% of JMicron's sales, respectively.

When flash controllers were first offered to SSD manufacturers in 2008, JMicron's early JMF601 and JMF602 models were reported to have issues with write latency, causing a stuttering problem.

[27] Certain drives driven by the JMF667H controller, such as the Kingfast C-Drive F8, have achieved high scores on independent review sites—for example, 90% on TweakTown.