1. Brazilian modders at TecLab upgraded NVIDIA's GeForce RTX 4090 with faster VRAM and tweaked BIOS settings, resulting in a 13% performance boost in benchmarks. 2. The modifications suggest NVIDIA may be limiting the full potential of its GPUs for cost and usability reasons. 3. NVIDIA's upcoming RTX 50 series is rumored to feature even faster GDDR7 VRAM, promising significant performance improvements.