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ATX cases are computer cases designed to accommodate ATX (Advanced Technology Extended) motherboards, which are larger than standard motherboards. These cases typically have a standardized layout with the power supply positioned at the top rear, expansion slots for additional components, and ample space for cable management. ATX cases come in various sizes and configurations to fit different needs, from compact mini-tower designs to spacious full-tower models with room for multiple graphics cards and storage drives. These cases often feature multiple cooling options, including fan mounts and liquid cooling support, to help maintain optimal temperatures for high-performance components.