Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

micro-op cache

A store of already-decoded micro-ops, so a hot loop can skip the slow x86-64 decoders.

The micro-op cache (decoded stream buffer, op cache) holds decoded micro-ops keyed by instruction address, delivering them at higher bandwidth and lower power than the legacy decoders.