After 7 years they will require replacement

Oracle depreciates them over 7 years to cook the books for better financial reports. They’re apparently generally replaced after 3-4 because individual GPUs start failing and the next generation’s improved performance and power consumption will make them obsolete anyway.

They’re essentially throwaway hardware as they can’t really be resold and repurposed for gaming either despite all that glorious VRAM. They only do compute.