➀ Chinese companies are modifying NVIDIA GeForce RTX 40 series GPUs to increase VRAM for AI workloads, particularly for cloud computing providers. ➁ The GeForce RTX 4090D 48GB and RTX 4080 SUPER 32GB are being upgraded with custom PCBs to double their memory capacity. ➂ These modified GPUs are in high demand among cloud service providers, renting for as low as $0.03 per hour, reflecting the strong market need for AI computing power.