Anybody got any experience tweaking this? How much does it actually affect performance, has anybody run any kind of tests? I'm bored right now so I might have a play. ---------- OK, ran Geekbench: Reduced setting: Highest setting (35.8% faster): Automatic setting (even faster but not by very much so I guess it's a random variation, you never get quite the same Geekbench score twice): In conclusion, the Reduced setting is much much more reduced than I had expected. I guess running on Automatic is the best option since the computer seems to give it maximum performance when required.