Use your money wisely and buy what you need.
You don't need a computer for 3d rendering if you're working on photoshop.
You don't need a Mac if you can have the same with a pc for a better price.
Prefer a desktop over a laptop if you're not going around.
Processor: Go for a new generation. (Example: New i3 will be better than older i7).
Graphics card: Medium is enough for the basic programs.
Internal memory: At least 8 or 16.
SSD hard disk: Faster than the regular mechanical hard disk.
Power supplier: Protect the computer.
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