I will assume that you have FRAPS(if not you can get the free version from FRAPS.com;the main difference between the full and the demo AFAIK is that in the demo you can record videos of upto 30 seconds at a time) .
1)Run FRAPS before starting BF3 .
2)Load a section of a mission that is graphics intensive(plenty of smoke,destruction,enemies and explosions).
3)Press F11 or whatever the hotkey you have set for benchmark .
4)Play your normal game while FRAPS benchmarks for .Press F11 again to stop benchmark . The min,max and average FPS will be stored in a Spreadsheet file.
5)Repeat this to get an average min,max and average .
Note/
- Run FRAPS before starting BF3
- Load a section of a mission that is graphics intensive(plenty of smoke,destruction,enemies and explosions).
- Press F11 or whatever the hotkey you have set for benchmark.
- Play your normal game while FRAPS benchmarks for
<insert time here>
. Press F11 again to stop benchmark. The min, max and average FPS will be stored in a spreadsheet file. - Repeat this to get an average min,max and average.
Note:Make Make sure you have the MinMaxAvg dialog ticked under benchmark settings .