Of course, getting that much data to the processor is another story...
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The Register has spotted four 4.7GHz - yep, you read that right - Power6 chips cranking on Oracle 11i. The speedy chips confirm IBM's boasting that Power6 would arrive near 5GHz. They also show that IBM's customers have a lot to look forward to in terms of raw performance.
With 4.7GHz chips (4MB of L2 and 32MB of L3 cache), an IBM p570 server showed an average response time of .625 seconds when handling requests from 2,100 users. That compares to a p570 with 2.2GHz Power5+ chips that had a response time of .983 seconds for 2,000 users.
You can catch all the benchmarks here until Oracle notices this story (Update: Oracle has removed the results). We've also taken the liberty of copying a PDF report on the results for you here.