Start with the job: 1080p competitive play, 1440p high-quality gaming, 4K production, local AI work, software development, or a mixed workload. That decision determines where CPU speed, GPU capability, VRAM, memory capacity, storage, cooling, and power delivery matter most.
Then validate the system as a whole. Check the motherboard socket and firmware, memory support, case clearances, cooler height, GPU dimensions, power connectors, estimated load, airflow path, display outputs, and the return policy. A premium build is a compatible, quiet, testable system—not simply the most expensive cart.