Cloverview, aka atom-z2760 supports SSSE3
See the datasheet from intel http://www.intel.com/content/www/us/en/processors/atom/atom-z2760-datasheet.html
Search for SSSE3 and it says in section 1.4 under Processor Core
Intel® Streaming SIMD Extensions 2 and 3 (SSE2 and SSE3) and Supplemental Streaming SIMD Extensions 3 (SSSE3) support