ICS update gives a big boost to your HTC Vivid

Granted, that number is a bit misleading, because the only place you'll see an improvement as large as 66% is in the vastly improved stock Android browser which processes Javascript 66% faster than the Gingerbread stock browser, and renders HTML about 24% faster. Still, you should see a fair bit of improvement in general as well. On the graphics benchmarks, the HTC Vivid running ICS scored 20% higher on Nenamark 1, and a very impressive 41% higher on Nenamark 2, compared to a Vivid with Gingerbread. 

Maybe best of all is that the Vivid showed almost an extra hour of battery life in the Basemark OS battery test. That test doesn't really translate to longer talk time, but will mean better battery life for everything else for which you use your phone. Add that kind of performance boost to the Beats Audio and other improvements HTC put in the update, and there is some real value in getting ICS on your phone. 

source: VentureBeat