685: The Ability to Be Hotter

What It Covers

ATP episode 685 covers Apple's discontinuation of the Mac Pro with no successor planned, the MacBook Neo's market positioning against Chromebooks in education, M5 Pro/Max chip architecture details from Apple engineers, Overcast transcript navigation features, Ubiquiti's Russia supply chain controversy, and Marco's 22-mile Manhattan training walk preparation using Apple Watch Ultra battery testing.

Key Questions Answered

• •Mac Pro discontinuation: Apple confirmed to 9to5Mac that the Mac Pro is permanently discontinued with no future hardware planned — not a temporary gap like the HomePod. The M2 Ultra Mac Pro was effectively dead on arrival since that chip already fit in the Mac Studio. The last genuinely capable Mac Pro was the 2019 Intel model, which supported 1.5TB RAM and four AMD GPUs — configurations the current Mac Studio lineup cannot match even in 2026.
• •Apple Silicon thermal ceiling: The Mac Studio's thermal envelope caps what Apple can ship in a desktop. With the M5 Pro and Max now using separate CPU and GPU dies via a chiplet architecture, Apple has the engineering capability to build chips too hot for the Mac Studio's cooling system. A larger enclosure could theoretically double compute capacity, particularly relevant for local AI model inference, which currently requires $60,000+ NVIDIA rack hardware to run frontier models.
• •MacBook Neo education adoption: Whether the Neo displaces Chromebooks in schools depends entirely on existing IT infrastructure. Schools already running Apple device management find the Neo compelling at roughly $500 for education — potentially saving one district $400,000–$500,000. Schools running Chromebook fleets benefit from near-instant Google account provisioning on any device and student-serviceable repairs, advantages the Neo narrows but does not yet eliminate.
• •Overcast transcript navigation: Transcript views function as a practical audio navigation tool beyond reading. Music detection markers — displayed as musical note icons alongside transcript text — allow listeners to visually identify ad breaks and section transitions by spotting clusters of music indicators, then tapping to seek directly past them. This workflow lets users skim text faster than scrubbing audio, making transcripts a functional replacement for chapter markers on podcasts that lack them.
• •Apple Watch Ultra battery on long workouts: Running a full GPS workout with low-power mode enabled (always-on display off) on Apple Watch Ultra across a nine-hour, 22-mile walk consumed roughly 40% battery, leaving 60% remaining. This confirms the Ultra can complete a 32-mile walk without recharging. For ultra-distance events, enabling low-power mode while retaining GPS and workout sensing is the practical configuration to extend runtime without losing tracking data.
• •Ubiquiti Russia supply controversy: A January 2025 Hunterbrook Media report alleged Ubiquiti products reached Russian military buyers through sanctioned intermediaries in Turkey and Kazakhstan after Ubiquiti cut off direct Russian sales. US export controls operate on strict liability — ignorance of downstream reseller behavior is not a legal defense. However, every secondary source traces back solely to Hunterbrook, which disclosed a short position on Ubiquiti stock at publication, creating a direct financial incentive to move the price downward.
• •M5 chip architecture claims: Apple platform architecture engineer Anand Shimpi confirmed the M5 Pro and Max performance cores are a completely custom microarchitecture distinct from both the efficiency core and the prior generation's performance core. Apple claims the new medium-tier performance core surpasses the efficiency of the previous efficiency core — suggesting the M6 generation may retire the old efficiency core entirely. Apple also confirmed PCIe 5 support via custom-designed controllers, and declined to comment on M5 Ultra plans.