In that case I'll see if I can run at 21x200 @1603 while dropping the voltages down to the settings I had on the 6 march. Will let you know how it goes!
Have a look at this thread You can use Geekbench to test the differences between the various settings. There's other benchmarking tools available as well. The main reason I have my system overclocked is for video editing so when I'm benchmarking the only result I'm interested in is rendering benchmarks of my own devising. I can then compare these to not only this system but other systems I've had in the past.
