I recently purchased a renewed hp elite 8300 from amazon(you can go look them up on amazon, they average around $150). i dont plan on doing any major gaming, but i still want to upgrade this thing to its fullest potential. my girl plays "planet zoo", and its a little laggy. i plan on editing movies on this PC, and some of my movies are gonna be 4k, and i know that 4k has a few system requirements. i dont want to edit an entire feature length movie, and then have to wait a week for it to process and convert. im going to put a link to the amazon page of the pc that i bought, so you guys can look and see exactly what im working with. i just need to know the max upgrades i can do, without having to change motherboards. i want to upgrade power supply, RAM, CPU, graphics card, and anything else that will improve performance. im not a computer/tech guy, so im just opening up and being honest about my knowledge and capabilities....there almost non-existent haha. so please, help me get the most out of the system that i have. thank you, Rob