My friend bought a new game, he could wait to test it, so I though what the hey, nothing better to do, his PC lagged far far less, the spec was the same, except his GFX card wasn't as good and his processor was slighlty faster. His computer, clogged up with a lot of stuff on his desktop, ran pretty quickly, start up quick, shut down quick, and played the game with no lag...
However I find my computer is slow and lags most of the time, with game far below it's spec, so obviously there must be a performance issue.
So in short what ways can I improve the performance of my computer, I've ended CPU/Ram munching processes that I know 100% I don't need, but there are others like SMC and CLI that are there that take up CPU (And explorer ranges from 2- 15%) and I set the computer performance settings to max performance, same for gfx card and used a demo of a PC tuner to optimise my ram...it improve things a lot, played Call of Duty 2 demo with medium/low setting and Half Life 2 demo with medium settings, it lagged, but was playable.
But I'm sure I can do other things to increase performance with out overclocking.