A GPU can last 5 to 8 years, depending on how frequently it is used and how well it is taken care of. If a GPU is only used Occasionally and well-maintained, it can last even longer. In terms of performance, a good mid-level GPU today would likely only serve at a mid-to-high performance level for 3 years or so. Beyond that, the performance degradation will likely be noticeable enough for most users to want to upgrade to a newer model. However, many older GPUs still function adequately for basic tasks such as web browsing and document editing.