I have an AMD A8-6600K APU with AMD Radeon HD graphics, but I want to change to an Intel I5 4690 3.5GHz Quad Core, Asus H81M Plus Motherboard DDR3 HDMI 4K... Does this mean I have to change anything else, like the AMD graphics card or stuff..? Sorry if it's a stupid question, but it's my first time doing this to the computer.