You could use an
amd fx-8350 cpu
Sapphire r9 280x tri x gpu
Gigabyte ga970 gpa ud3p motherboard.
They sum up to 480'ish. But, fx 8350 stock fans sound like a revving engine. So I alsı suggest a hyper 212 evo cpu cooler which is around 30$.
This cpu will allow a higher end gpu if you ever wish in the future, and mobo is suitable for overclocking.