I found this thread at SETI@Home by way of the Inq linking to a thread at AcesHardware. Confused yet? The S@H thread definitely has the best explanation, though, &, if these numbers are: a. not fudged/hacked, & b. indeed from the Barcelona, then June's going to be a fun month...

"Now, the trend should definitely be visible. This new AMD CPU is so far ahead in efficiency it simply cannot be the same architecture. I can only surmise that dual-core Barcelona versions have already made their way to partners (and onto SETI@Home!)."