AMD Helios Rack-Scale Challenge to Nvidia

AMD unveils Helios rackscale system, competing on full system integration rather than just GPU specs, directly challenging Nvidia's ecosystem moat. Nvidia counters by shipping Vera Rubin chips to cloud providers (5x inference/3.5x training gains, 10x cost-per-token reduction), reinforcing its lead. Earnings report for AMD expected tomorrow, with analyst upgrades and 170% stock return signaling momentum.