CF-Bench is (mainly) CPU and memory benchmark tool specifically designed to be able to handle multi-core devices produce a fairly stable score and test both native as well managed code performance.

It tests specific device properties you do not regularly see tested by other benchmarks and runs in a set timeframe.

It does produce some "final" scores but as with every benchmark you should take those with a grain of salt. It is simply not theoretically possible to produce a single number that accurately describes a device's performance.

More information and discussion is available at this application's thread at XDA-Developers:

http://forum.xda-developers.com/showthread.php?t=1134768

You can view results from many devices at:

http://bench.chainfire.eu/

Note that that page is still under development.