windows 8.1 sucks I just went back to windows 7. The windows 8.1 apps maked my gpu run at 45c when there open! I uninstalled most of them and when you open them up you have to close them through the task manager as well. Games feels stuttery, the mouse felt choppy in games, got fps spikes. The only thing I can say is good about windows 8.1 is that my cpu temps dropped by about 3c and it feels snappier than windows 7. It's not worth the upgrade, windows 7 for me runs better in games it feels smoother and all this bf4 being better in win 8 is bullocks it really is!. The gpu runs better in windows 7. I feel windows 7 is just more optimized than windows 8.1, windows 8.1 is still pretty much in a beta stage. Before anyone even mentions that I should get a better pc for windows 8.1 I have a 4670k, 4gb 770, 8gb ram, ssd and hdd so it's nothing to do with my system it's the shitty os! windows 9 better be good!