Yesterday the arithmetic chain plunged because of reports of $Microsoft(MSFT)$ data center lease cancellations and extensions, but instead $NVIDIA(NVDA)$ was down more (-5.74%).NVDA's current but a bit may not be the same, because the arithmetic efficiency improvement and the concern of lower demand for GPUs, in fact, in January DeepSeek wave has been embodied, it makes no sense that the same subject matter once again hype wave.But NVDA's own Blackwell series may become a more worrying point for the market:GB200 supply chain challenges, which have been reported on quite a bit before.Included:Deployment complexity: the deployment of GB200 required 5-7 days of installation time, with frequent instability an