ModelRigSYS: READY
Home / Guides / VRAM vs RAM vs unified memory
PRACTICAL GUIDE

VRAM vs RAM vs unified memory

Understand dedicated VRAM, system RAM, Apple unified memory, and offload.

Decision framework

  1. Choose the exact model and workload.
  2. Select quantization and context target.
  3. Estimate weights plus runtime reserve.
  4. Check software support for the hardware.
  5. Compare local total cost with cloud fallback.

Do not skip

Memory fit is necessary but not sufficient. Verify current runtime documentation, drivers, measured benchmarks, power, cooling, and return policy before purchase.

Run Fit Matcher →