Hi, I thought this might be informative for those still tweaking their graphics performance or for those who is planing on upgrading their system.
REAL WORLD APPLICATION ONLY! no graph nor statistical bs.
feel free to also post resources here to improve performance.

TIPS: in the game, press ` (next to numeric 1) to activate console. Use the command Render.DrawFps 1 to show current frames per sec)


Windows 7 64 bit
Intel i7 860 @ 2.80GHz (stock fans)
4 GB RAM
Cheap Western Digital harddisk
Sapphire HD5770 1GB Vapor-X (mild oc to 920Mhz @ 1300Mhz using stock fans)
AMD Catalyst™ 11.10 Version 3 Preview Driver


Average FPS on 64 player servers: 48fps

Resolution: 1440x900
Texture: HIGH
Shadow: HIGH
Effects: HIGH
Mesh: HIGH
Terrain: HIGH
Terrain Decor: HIGH
Antialiasing Deffered: OFF
Antialiasing Post: HIGH
Motion Blur: OFF (less distraction during intense battle)
Anisotropic: 16x
Ambien Occlusion: HBAO


here's a semi-official guide from AMD for ATI graphics card
http://blogs.amd.com/play/2011/10/31/your-...-battlefield-3/