Detailed statistics for SETI@home

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Since the May 1999 inception, the 5.11 million participants have processed two billion work units,* which required about three sextillion calculations and two million CPU years.

Three-day trend:

CPUs, WUs, and signups; see description

Five-hour average:

(as of 30-Aug-2004, 13:58 UTC)

At any given moment, an average of 571,842 computers are working fulltime on the problem.
Results are being returned at a rate of 2,064,496 units/day (forty-eight trillion calculations per second, roughly equivalent to a 348-teraHz super-computer). This is about 933% of realtime (assuming 6912/125Gb/day recorded).
A new participant is signing up every 89 seconds.

Long term averages:

Twenty-four-hour average: 395,256 1,410,693 (238 THz, 638%) 86
Forty-six-hour average: 382,158 1,367,433 (230 THz, 618%) 95
Seven-day average: 397,327 1,414,624 (238 THz, 640%) 87
Four-week average: 380,967 1,345,499 (227 THz, 608%) 82
Thirteen-week average: 395,289 1,371,319 (231 THz, 620%) 81
Sixty-three-month average: 391,168 807,271 (136 THz, 365%) 37

Twelve-week trend:
CPUs, WUs, and signups; see description

Twelve-month trend:

CPUs, WUs, and signups; see description

Efficiency

Estimated efficiency in giving WU's to clients non-redundantly:

An efficiency of 50% means that the average WU is given to two different participants. Multiply by green figures to get effective progress. The estimate is based on observed progress through tape names with each tape assumed to yield 140,000 work units.

Twenty-four-hour average:	395,256	1,410,693 (238 THz, 638%)	86
Forty-six-hour average:	382,158	1,367,433 (230 THz, 618%)	95
Seven-day average:	397,327	1,414,624 (238 THz, 640%)	87
Four-week average:	380,967	1,345,499 (227 THz, 608%)	82
Thirteen-week average:	395,289	1,371,319 (231 THz, 620%)	81
Sixty-three-month average:	391,168	807,271 (136 THz, 365%)	37