Apple has quietly removed the 512GB RAM option from its top-tier M3 Ultra Mac Studio desktop, likely due to the ongoing RAM shortage. The 512GB configuration was not a mass-market machine, requiring the most expensive M3 Ultra model, which brought the system's price to $9,499. The removal of this option may be a sign that even Apple is not immune to the supply chain issues affecting the tech industry. The company's Ultra chips are the only ones that support more than 128GB of RAM, making this removal significant for certain users.