I'm going to buy a new CPU, although I've been told I should replace the mainboard, ram and install an AMD CPU. I currently have an i7. I want to upgrade because my CPU is five years old now and needs an upgrade, I just think it's not worth spending hundreds of £ when an i9 does the job too. What do you think? I don't know a lot about PCs so I'm just asking for some advice. Thanks.