The concept of an external Graphics Processing Unit (eGPU) has gained significant attention in recent years, particularly among laptop users who crave better graphics performance without sacrificing portability. While pre-built eGPU enclosures are available, they often come with a hefty price tag. A DIY eGPU setup offers a cost-effective alternative, allowing users to repurpose an old GPU and create a custom eGPU solution. This guide provides a step-by-step approach to building a DIY eGPU setup.