Funny im an Intel and nVidia guy myself lol
I built my computer also for half of what it was really worth. At the time I built it, the only computer manufacturer that could have matched or beat it was Alienware. But based on their pricing I built mine for like a third or fourth of the price lol
The only thing that would cause compatibility issues is not looking at the specs and knowing what to look for and also knowing what manufacturers and OEMs to go for and stay away from.
For me, building my own computer is the ONLY way to go. I dont think ill ever be able to buy an already built computer ever again after having built this one. Plus I left some
room for upgrading. Im due for a rebuild soon though which means another shipment from newegg
For $500 you can get WAY more bang for you buck if you build it yourself. A $500 Dell is not going to have what you are apparently looking for.