As artificial intelligence demands higher performance, investors are weighing the explosive growth of Astera Labs (ALAB -2.43%) against the architectural dominance of Arm (ARM +0.39%) to find the superior long-term play. Astera Labs focuses on the physical connections that keep data flowing, while Arm licenses the blueprints for the processors themselves. Metric Astera Labs Arm Forward P/E 84.3x 128.6x P/S ratio 66.7x 62.2xValuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers. Because both companies face similar risks and trade at similarly elevated multiples of sales and forward earnings, I would buy Astera Labs right now. Astera Labs is doubling its revenue year over year, whereas Arm is growing at a slower rate of around 25%.