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Windows 7 (latest Service Pack, 32-/64‑bit), Intel Core Duo or AMD Athlon 64 CPU, 2GB RAM.
Mac OS 10.6 (latest update) or 10.7, Intel Core Duo CPU, 2GB RAM.
Native 64‑bit support for stand‑alone and plug‑in versions.
1GB free disk space or 48GB for complete installation.
Kontakt 5 works as stand-alone, VST, Audio Units and RTAS (Pro Tools 8 or higher) versions. Although Windows 7 is a quoted requirement, Kontakt has been running on Windows XP (service pack 3) on a 32‑bit machine throughout the course of this review, with no problems at all.