Efficient Computer closed a $97M follow-on round on Sept. 29, 2026 — its second major raise this year after a $60M round in February — bringing its total raised to $650M. The round was led by TQ Ventures with participation from Eclipse, Union Square Ventures, Giant Ventures, Triatomic Capital, TO Capital, TF Capital, Mana Ventures, Toyota Ventures, Overmatch and Borderless. The company said it is bringing to market a new dataflow-architecture chip it claims can reduce energy consumption by up to 100x versus x86 architectures from Intel and AMD; no clients, revenue, pipeline or employee count metrics were disclosed.