She probably jealous to computer, as when you play games you do not pay much attention to her. It's not gonna be fixed by any hardware upgrades or buying xbox - she will hate your new shiny and silent toy all the same. I can suggest one of the following:
- Hook her up on the same drugs. If you are playing MMORPG - make her play just a bit, chances she will get hooked and you will become happy zombie family, spending all your spare time and more leveling your chars and communicating with each other using team chat. I spent about a year like this with my ex wife, can not really recommend this option.
- Get couple of noisy bitcoin miners, overclock, put in the same room and inform her that those monsters will mine 24/7. You will have a rough week, keep calm, then sell them after she understand that your computer is not at all noisy.
- Move your gaming rig into separate room, stay there and hope she will ask you to move back with your noisy gear. Even better if you can move it somewhere outside the house, to you friends place or something like this, and spend a few evenings there because you do not want to disturb her with the noise.
- Ask her to move in another room while you play if she do not like the noise.
- Think, maybe it's really time to stop playing and consuming other forms of digital content and spend more time with her? Get her out for a walk, or start doing something interesting together like for example get the 'Cooking for geeks' book and explore cooking, or get plush handcuffs and stuff, crystal meth, viagra and have some fun together, or buy aquarium, or sign up for pottering classes - possibilities are endless and almost anything is better than spend your life in front of a monitor, trust me on this ;)