GPU base clock vs boost clock explained
Graphics cards are marketed with base and boost clock figures (in MHz or GHz). The base clock is a guaranteed minimum under defined conditions; the boost clock is a target the GPU tries to reach when power and thermals allow. In real games, the actual clock moves up and down every second—this is normal.
What limits boost in practice
Power limits, temperature, and fan noise targets cap how long a card can sustain its highest clocks. Better coolers and higher power budgets (within safe limits) usually mean higher average FPS, not a single magic MHz number on the box.
Why RankedGPU does not rank by “MHz”
Merchant titles sometimes advertise factory OC or “boost” branding, but listings are inconsistent. We focus on chip tier, VRAM, price, and price per GB VRAM—then you validate sustained clocks in independent reviews for the exact AIB model you pick.
Related: Power supplies and GPU power.