What matters

Both are compact professional desktops built around unified-memory silicon and high-speed Ethernet, but they are not interchangeable. ThinkCentre X Ultra is a future, region-dependent model family aimed at Windows or Linux scale, while the compared Mac Studio is an exact shipping configuration for macOS. With no matched cross-platform performance test, the defensible choice starts with software compatibility, memory needs, and delivery certainty.

Key differences

  • ThinkCentre X Ultra is a 1.6 L desktop measuring 183 × 183 × 51 mm, starting at 2 kg, with 2 Thunderbolt 4 ports. That compact footprint can suit dense desks, but the starting weight and port specification do not lock every regional configuration.
  • The exact Mac Studio M4 Max configuration has a 14-core CPU, 32-core GPU, 36 GB of unified memory, and a 512 GB SSD. Its 197 × 197 × 95 mm chassis weighs 2.74 kg and provides 4 newer-generation Thunderbolt ports, giving Mac-native workflows a known shipping platform with broad high-speed attachment options.
  • Lenovo lists configurations up to Ryzen AI Max+ PRO 495, 128 GB of unified memory, a 55 TOPS NPU, and a cluster-ready option spanning 4 systems. Those ceilings can serve larger local models or parallel requests only when the chosen Windows or Linux software stack and exact local configuration support the plan.
  • ThinkCentre X Ultra is scheduled for later in 2026 and may be configured with as many as 2 drives, each up to 4 TB, in M.2 slots. The exact Mac Studio has shipped since 2025 with a 512 GB SSD. Lenovo's disputed SSD generation is intentionally excluded.

Who it is for

  • Choose ThinkCentre X Ultra when Windows or Linux is mandatory and the verified local configuration offers the 128 GB memory ceiling or cluster option your local AI workload needs.
  • Choose the exact Mac Studio M4 Max when required applications are Mac-native and a shipping configuration with 36 GB memory, 512 GB storage, and 4 high-speed Thunderbolt ports is the more useful certainty.
  • Buy neither until every required application, plug-in, driver, and peripheral is confirmed. For Lenovo, also wait for the exact regional processor, memory, storage, and availability when those details determine the purchase.

Watch-outs

  • There is no matched cross-platform performance test, so the processor labels and listed platform ceilings do not establish a universal speed winner.
  • Lenovo's processor, 128 GB memory, storage, starting weight, and cluster figures describe model-family options. A cluster also requires multiple systems, so the local listing and total deployment plan must be checked.
  • Changing between Windows or Linux and macOS can disrupt required applications, plug-ins, drivers, automation, or peripherals. That migration cost can outweigh the hardware distinction.