Upscale AI's recent $190M Series A-1 extension lifts total funding to $500M and its valuation to $2B, with Nvidia joining as an investor The pure-play startup is building open-standard silicon, systems and software for AI scale-up and scale-out, but is not yet shipping It must unseat Cisco, Arista, Broadcom and Nvidia while leaning on standards like UALink and Ultra Ethernet Upscale AI now has $500 million and a wildly ambitious mandate: build a new networking company from silicon up, aimed...