SITUATION EXPLAINED: Four of Apple's new Mac Studios will run Kimi K3 on your desk. • M5 Ultra scales to a 36-core CPU and 80-core GPU with up to 512GB unified memory, enough to run large models entirely on-device • The 512GB option isn't purchasable yet, which suggests even Apple can't secure the memory • Maxed out at 256GB with 16TB of storage, it's $18,299 • Running Kimi K3 at full quality needs about 1.56TB of RAM, so four machines and roughly $60,000 • The new Mac Mini gets the M6 and M5…