Before purchasing a computer case, it is important to ensure that it is the appropriate size for your needs. Cases come in a variety of sizes, from small form factors that are designed for compact builds to full towers that can accommodate multiple graphics cards and other components. You should also consider the number of drive bays you need, as well as the type of cooling system you want to use.
Another important factor to consider is the material of the case. Cases are typically made from steel, aluminum, or plastic. Steel cases are the most durable, but they are also the heaviest. Aluminum cases are lighter and more stylish, but they are also more expensive. Plastic cases are the least expensive, but they are also the least durable.