There's many ways to attack the number, one is taking the value published by BOINCstats: http://it.boincstats.com/stats/project_graph.php?pr=wcg . Yesterday it showed 53.8 teraflops sliding average only for the BOINC clients. They represent about 55-60% of total points daily average (BOINC+UD Agent). Thus simplistically it's 90-95 Tflops. The day before someone came to 70 Tflops. It's likely closer to the truth as the UD clients are likely more low-end, single core, where BOINC can run multi-core (parallel, multi-job processing). Remember time is reported by clients on the UD agent side, not CPU cycles.