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RK3288 eMMC vs RK3188 NAND

posted 26 Oct 2014, 23:49 by Ian MORRISON   [ updated 21 Feb 2015, 20:35 ]
I performed some tests to compare eMMC with NAND.  With the new RK3288 it makes a big difference depending on what chip is used for storage.

The RK3288 box I tested uses Sandisk's SDIN7DP4-16G which is slated to perform at sequential read of 90 MB/s and write of 45 MB/s (see http://download.siliconexpert.com/pdfs/2013/3/3/7/13/47/322/sndk_/manual/sdin7dp4-16g.pdf) except it doesn't!  

Other RK3288 devices are using Samsung eMMC and depending on the storage capacity, big differences will be encountered:

8 GB KLM8G1WEMB-B031 read of 100 MB/s and write of 6 MB/s vs 
16 GB KLMAG2WEMB-B031 read of 170 MB/s and write of 11 MB/s vs
32 GB KLMBG4WEMC-B031 read of 200 MB/s and write of 50 MB/s


For a table that illustrates the point, please see https://plus.google.com/109451178006683865932/posts/MicuuyJdbak.
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