The key features of this beta test App (4.49) include:
published 2008-05-149
automatically switches between apps depending on SSE CPU feature
override cpu detection by placing a file CPU_TYPE_0 in BOINC directory if you get 'signal 4' errors
SSE App should use mainly SSE arithmetic, trying to avoid FPU exceptions
prefetching in Hough part should work better than in 4.3x
App with separate graphics program ("APIv6" App)
BOINC API as of May 7 should make it work with latest development clients