** Shares of Nanoveu rise as much as 52.1% to A$0.073, their highest since May 6, 2021

** Stock posts its biggest intraday percentage gain in a week

** Nanotechnology co says AI performance testing of Singapore-based Embedded AI Systems' (EMASS) new chip shows 20x lower energy consumption vs peers

** Last week, NVU announced its acquisition of EMASS

** About 45 mln shares change hands, compared with the 30-day average volume of around 2.8 mln

** Stock up ~187% YTD, including session's move

(Reporting by Aaditya Govind Rao in Bengaluru)

((Aaditya.govindrao@thomsonreuters.com;))