I have been asked by my local church to build a rig to use as a WYSIWYG computer. There will be 2048 fixtures in the show. They have given me a budget of $500. This does not include case, monitor, keyboard, or mouse. Just parts.So far I have: (It is a "Small" build.) Motherboard: A55M-E33 CPU: AMD A8-6600K RAM: 8GB AMD 1600 mhz RAM PSU: CX 630 GPU: R9 270x And just a standard 5400 rpm 500gb Harddrive I was also wondering if it really needed an R9 GPU, or if I could use an ASUS Radeon HD 7750 Please let me know what you think as soon as possible.