Depends on the footage, the rendering required (effects used) and most importantly on the system confuration.
If you have the engine of a Lamborghini Aventador (fast CPU/GPU) but coupled with the gearbox of a 30 year old VW Beetle (memory) or a set of wheels from a Fiat 500 (disk) it will not run at full power and speed.
Harm's right. There's just too many variables here. There is no 'average'.