So you want to build your own all-in-one computer? The Loop System LP3400 has you covered. It has a 34″ curved display and 450W 80+ Gold internal power supply. The case supports full size graphics cards. You get 2 x 5W integrated speakers and a 1.3 megapixel integrated camera.
The LP3400 kit supports liquid cooking. It is WiFi and Bluetooth ready. Not cheap though.