Does petrol / gasoline with a higher octane rating deliver MORE POWER and fuel efficiency than petrol / gasoline with a lower octane rating.
Yes, in some cases. No, in most cases. Read all about octane rating, and why you should NOT spend more money on high octane fuels that your car cannot make use of.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips